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Anonymous Posted on Jan 12, 2011
Answered

1989 f150 302 V8 fuel injected emissions problem. Installed new engine from Ford, blew SKY HIGH on low and high idle emissions. Emission numbers were 10-20x max legal limit (over 3000). Replaced the catalytic converter and EGR valve and cleaned the idle air valve and took back to emissions. Truck passed the HIGH IDLE test very well, but still failed the low idle test. The low idle numbers were cut exactly in half, but were still 5-10x the max allowable. QUESTION IS, what can cause JUST THE LOW IDLE emissions to be RIDICULOUSLY HIGH while the high idle is really low

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  • Anonymous Jan 12, 2011

    Thanks on the PCV valve too. I remember replacing it on the old engine, but the mechanic didnt ask for a new one for this engine...

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  • Posted on Jan 12, 2011
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Did you install new spark plugs? Definitely replace the O2 sensor.

Testimonial: "Thanks for the attention!"

  • 17 more comments 
  • Anonymous Jan 12, 2011

    A mechanic installed the new engine and it got all new wires, plugs, rotor, cap, alternator, radiator, heater core, rebuilt distributor, etc, etc. No corners were cut to my knowledge. I bought all the parts new. I did not replace the O2 sensor, but I have an ECC IV computer reader/tester that isn't telling me the O2 sensor is bad. It told me "NO EGR FLOW" and thus the reason EGR was replaced. Should I change the O2 sensor even if the computer doesn't say its bad?

  • Anonymous Jan 12, 2011

    He did tell me that he didnt connect the air hose to the catalytic converter cause he said I was missing the air pipe that ran down there, but it shouldnt effect anything. I must not have had it for awhile and I always passed emissions before.

  • Anonymous Jan 12, 2011

    I wouldn't take anything for granted. Cahnging the O2 sensor and hooking up the converter properly may make the difference.

  • Anonymous Jan 12, 2011

    I hear ya, im going to have that done tomorrow. Its just no one here (including me) can believe the emissions numbers im getting.... there just plain off the charts, even after the new catalytic converter cut them in half. Standard is 220, am getting over 1500.... was over 3200 before new cat...

  • Anonymous Jan 12, 2011

    Although, if it was the O2 sensor, would it just effect the emissions during idle? The power is somewhat retarded when i start during low RPM and it just clears up over a certain RPM. When the RPM is lowered after it clears, the truck runs right at low RPM until whatever is causing the problem falls back into place at idle again.... weird.

    Tailpipe doesn't smell at higher RPM or shortly after returning to idle. Smells strong during normal idle....

  • Anonymous Jan 12, 2011

    Is the new engine the same displacement or has it been bored out. If your'e using the old ecm on a larger displacement engine it may be affecting the timing and air/fuel ratio. I don't know anyting about the testing equipment involved, but if the tests are based on a given cubic inch displacement engine, then the readings would be all screwed up Has the engine been run enough to burn off all the solvents and cleaners and oils deposited on the internal passages of the engine. That could really mess with the readings. Maybe the rings haven't seated good yet, and the combustion chambers are being contaminated with blow by from the crankcase. Put a hundred miles on the engine at highway speeds and try the test again.

  • Anonymous Jan 12, 2011

    Make sure the pcv valve isn't sucking oil into the manifold. You might want to remove a spark plug and see if it shows a rich fuel mixture.

  • Anonymous Jan 12, 2011

    It is a new engine from AER, the company that manufactures the 302 for Ford nowadays. It came from the plant where all Ford engines are made, it is OE spec. The original engine was a 302, this engine was ordered from the VIN of the truck so it is the same. I added a bottle of Lucas Engine Break-In Additive that should have provided the necessary zinc for the break in oil and to seal the rings. However this is my first new engine ever so i don't know how long it takes. I drove it about 40 miles on the highway today before taking it to emissions the second time. Before that it had only been run at idle and a few miles around town. It snowed tonight so ill take it out for a drive tomorrow and burn through a tank of gas. BTW, I put a tank of premium in it with a bottle of Techron, but I don't think that should cause any problems. Thanks alot, I love my truck but I think if i was born of an earlier generation I would be more handy with these 80's emissions systems.

  • Anonymous Jan 12, 2011

    I'm 65 years old, and I sure miss the leaded gas and quadrajet carbs on big block chevy engines. Although, you gotta be impressed with the horsepower they are pumping out of these little v6 engines in today's cars. Just a shot from the past, I put a 351 HO cam in a 302 ford, the prettiest exhaust note you ever heard. Good luck with your ride.

  • Anonymous Jan 12, 2011

    I know the sound, my last boat had twin 350cid crusader engines (chevy blocks) with 4bbl q-jets, they sound good through dual Y-pipe wet exhausts too. There just seems to be something about computers and emissions systems that is counter-intuitive to the theory of a motor that I cant comprehend. Thanks for your help, I'm 28.

  • Anonymous Jan 12, 2011

    Oh, to be 28 again, young, vibrant, recovering from Vietnam. Wait, Oh to be 30 again.lol

  • Anonymous Jan 13, 2011

    I drove the truck all day today and ordered the O2 sensor. I did notice that when the truck was at low idle it was running rough. If I "punched it" or raised the throttle above a certain point the truck engine would "clear up" and "take off". At lower throttle the engine really ran like ****. It makes gentle accelleration impossible. Could this be the TPS sensor or is this still symptomatic of the O2 sensor.

  • Anonymous Jan 13, 2011

    Also, i really need help finding a diagram of how to hookup the air pump system and how to test its components (air valves and solenoids). My mechanic doesn't know and Alldata doesn't have any information on it. He has basically thrown the thing back in my face now that its basically "running"

  • Anonymous Jan 13, 2011

    I live on a 1962 Uniflite Magnum 42 boat. It was one of three boats that were the prototype for the PBR boats that we sent to Vietnam. The navy boat versions were manufactured in 1965. My boat doesn't have the jet drives, but it does have the v6 Detroit diesel 2 stroke engines and the kevlar core hull !

  • Anonymous Jan 14, 2011

    How cool is that!? Concerning the air pipe for the cat. Where does the pipe fit on the engine? Is it part of the air pump? If the engine and computer are designed and programmed to run with a smog pump, that could be the sum of all your problems. I'll research the pump for pics.

  • Anonymous Jan 14, 2011

    Have not been able to find diagram of air pump intallation. Did find an article that said in the absence of the pump, to go ahead and electrically plug in the TAB and TAD solenoids and plug the vacuum lines to avoid the computer setting trouble codes. Not sure how the O2 sensor plays into all this. The TPS can be critical in the drivability department. I had a93 s10 with a modified throttle body and I was constantly adjusting the tps to get the thing to run right. If it was off too much, it ran like ****.

  • Anonymous Jan 14, 2011

    There is two air hoses that come out of the air pump. One is an intake. The second goes to a vacuum powered diverter or switch (the vacuum of which is controlled by a solenoid). This diverter has two outputs; one is to a 2' long rubber hose that is routed nowhere and is lying in the engine bay (comes out the bottom of the diverter), the second comes out the side of the diverter and goes to a metal pipe bolted to the manifold bolts and runs to the back of the engine to a second diverter. This one receives hoses from each side of the engine and the aforementioned metal pipe and has a line coming off its back side (allegedly to the catalytic converter, not connected). My research indicates that the diverters are supposed to funnel fresh air into the exhaust stream when the motor is cold, tricking the oxygen sensor into thinking the fuel mixture is lean so it increases the fuel mixture, effectively "faking" a choke condition. Once the engine is warm it supposed to stop air flow to the exhaust and divert it to the catalytic converter to provide oxygen for the cat to "light-off" with. As it stands, no matter how warm the engine gets, the air never makes it past the first diverter near the pump; it always blows out the 2' rubber hose that goes nowhere...

    Actually, now that i explain it to you, could the outlet hoses on the first diverter be reversed and instead of routing the air to the second diverter, its constantly dumping the air out the relief hose instead...

    I dont know if fixya will allow me to post an email address, but if you can manage to get one through to me, ill send you a picture of the Uniflte "williewiskers at gmail dot com"

  • Anonymous Jan 14, 2011

    Also, i dont know how much truth there is to it, but another of my older friends (who has had new cars and new engines) said i was fool to take a new engine to emissions and expect it to pass. He said a new engine takes thousands of miles to break in and anything less would be futile. This is my first new engine and Ive never had a new car, is there any truth to that...?

  • Anonymous Jan 14, 2011

    I don't know how long it takes to burn off all the mfg crud in an engine. The auto manufacturers, I think, must produce engines straight off the assembly line that conforms to EPA standards, and they have hardly any run time on them. I'm concerned about the additive you putin the engine for break in. I've never heard of that before. The only break in i've ever done is spin the oil pump with a drill to pre-oill the engine prior to the first light off, and to run the engine at 25oo rpm for 15 minutes to break in the camshaft. The break in additive may fried the O2 sensor. See if the smog agents will let you use a fresh O2sensor for each test.

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    P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
    P0126 Insufficient Coolant Temperature for Stable Operation
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    P0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
    P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
    P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
    P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
    P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
    P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
    P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
    P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
    P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
    P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
    P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
    P0150 O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
    P0151 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
    P0152 O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
    P0153 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
    P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
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    P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
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    P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
    P0162 O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
    P0163 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
    P0164 O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
    P0165 O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
    P0166 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
    P0167 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
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    P0481 Cooling Fan 2 Control Circuit Malfunction
    P0482 Cooling Fan 3 Control Circuit Malfunction
    P0483 Cooling Fan Rationality Check Malfunction
    P0484 Cooling Fan Circuit Over Current
    P0485 Cooling Fan Power/Ground Circuit Malfunction
    P0500 Vehicle Speed Sensor Malfunction
    P0501 Vehicle Speed Sensor Range/Performance
    P0502 Vehicle Speed Sensor Low Input
    P0503 Vehicle Speed Sensor Intermittent/Erratic/High
    P0505 Idle Control System Malfunction
    P0506 Idle Control System RPM Lower Than Expected
    P0507 Idle Control System RPM Higher Than Expected
    P0510 Closed Throttle Position Switch Malfunction
    P0520 Engine Oil Pressure Sensor/Switch Circuit Malfunction
    P0521 Engine Oil Pressure Sensor/Switch Circuit Range/Performance
    P0522 Engine Oil Pressure Sensor/Switch Circuit Low Voltage
    P0523 Engine Oil Pressure Sensor/Switch Circuit High Voltage
    P0530 A/C Refrigerant Pressure Sensor Circuit Malfunction
    P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance
    P0532 A/C Refrigerant Pressure Sensor Circuit Low Input
    P0533 A/C Refrigerant Pressure Sensor Circuit High Input
    P0534 Air Conditioner Refrigerant Charge Loss
    P0550 Power Steering Pressure Sensor Circuit Malfunction
    P0551 Power Steering Pressure Sensor Circuit Range/Performance
    P0552 Power Steering Pressure Sensor Circuit Low Input
    P0553 Power Steering Pressure Sensor Circuit High Input
    P0554 Power Steering Pressure Sensor Circuit Intermittent
    P0560 System Voltage Malfunction
    P0561 System Voltage Unstable
    P0562 System Voltage Low
    P0563 System Voltage High
    P0565 Cruise Control On Signal Malfunction
    P0566 Cruise Control Off Signal Malfunction
    P0567 Cruise Control Resume Signal Malfunction
    P0568 Cruise Control Set Signal Malfunction
    P0569 Cruise Control Coast Signal Malfunction
    P0570 Cruise Control Accel Signal Malfunction
    P0571 Cruise Control/Brake Switch A Circuit Malfunction
    P0572 Cruise Control/Brake Switch A Circuit Low
    P0573 Cruise Control/Brake Switch A Circuit High
    P0574 Cruise Control Related Malfunction
    P0575 Cruise Control Related Malfunction
    P0576 Cruise Control Related Malfunction
    P0576 Cruise Control Related Malfunction
    P0578 Cruise Control Related Malfunction
    P0579 Cruise Control Related Malfunction
    P0580 Cruise Control Related Malfunction
    P0600 Serial Communication Link Malfunction
    P0601 Internal Control Module Memory Check Sum Error
    P0602 Control Module Programming Error
    P0603 Internal Control Module Keep Alive Memory (KAM) Error
    P0604 Internal Control Module Random Access Memory (RAM) Error
    P0605 Internal Control Module Read Only Memory (ROM) Error
    P0606 PCM Processor Fault
    P0608 Control Module VSS Output "A" Malfunction
    P0609 Control Module VSS Output "B" Malfunction
    P0620 Generator Control Circuit Malfunction
    P0621 Generator Lamp "L" Control Circuit Malfunction
    P0622 Generator Field "F" Control Circuit Malfunction
    P0650 Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
    P0654 Engine RPM Output Circuit Malfunction
    P0655 Engine Hot Lamp Output Control Circuit Malfucntion
    P0656 Fuel Level Output Circuit Malfunction
    P0700 Transmission Control System Malfunction
    P0701 Transmission Control System Range/Performance
    P0702 Transmission Control System Electrical
    P0703 Torque Converter/Brake Switch B Circuit Malfunction
    P0704 Clutch Switch Input Circuit Malfunction
    P0705 Transmission Range Sensor Circuit malfunction (PRNDL Input)
    P0706 Transmission Range Sensor Circuit Range/Performance
    P0707 Transmission Range Sensor Circuit Low Input
    P0708 Transmission Range Sensor Circuit High Input
    P0709 Transmission Range Sensor Circuit Intermittent
    P0710 Transmission Fluid Temperature Sensor Circuit Malfunction
    P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
    P0712 Transmission Fluid Temperature Sensor Circuit Low Input
    P0713 Transmission Fluid Temperature Sensor Circuit High Input
    P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
    P0715 Input/Turbine Speed Sensor Circuit Malfunction
    P0716 Input/Turbine Speed Sensor Circuit Range/Performance
    P0717 Input/Turbine Speed Sensor Circuit No Signal
    P0718 Input/Turbine Speed Sensor Circuit Intermittent
    P0719 Torque Converter/Brake Switch B Circuit Low
    P0720 Output Speed Sensor Circuit Malfunction
    P0721 Output Speed Sensor Range/Performance
    P0722 Output Speed Sensor No Signal
    P0723 Output Speed Sensor Intermittent
    P0724 Torque Converter/Brake Switch B Circuit High
    P0725 Engine Speed input Circuit Malfunction
    P0726 Engine Speed Input Circuit Range/Performance
    P0727 Engine Speed Input Circuit No Signal
    P0728 Engine Speed Input Circuit Intermittent
    P0730 Incorrect Gear Ratio
    P0731 Gear 1 Incorrect ratio
    P0732 Gear 2 Incorrect ratio
    P0733 Gear 3 Incorrect ratio
    P0734 Gear 4 Incorrect ratio
    P0735 Gear 5 Incorrect ratio
    P0736 Reverse incorrect gear ratio
    P0740 Torque Converter Clutch Circuit Malfuction
    P0741 Torque Converter Clutch Circuit Performance or Stuck Off
    P0742 Torque Converter Clutch Circuit Stuck On
    P0743 Torque Converter Clutch Circuit Electrical
    P0744 Torque Converter Clutch Circuit Intermittent
    P0745 Pressure Control Solenoid Malfunction
    P0746 Pressure Control Solenoid Performance or Stuck Off
    P0747 Pressure Control Solenoid Stuck On
    P0748 Pressure Control Solenoid Electrical
    P0749 Pressure Control Solenoid Intermittent
    P0750 Shift Solenoid A Malfunction
    P0751 Shift Solenoid A Performance or Stuck Off
    P0752 Shift Solenoid A Stuck On
    P0753 Shift Solenoid A Electrical
    P0754 Shift Solenoid A Intermittent
    P0755 Shift Solenoid B Malfunction
    P0756 Shift Solenoid B Performance or Stuck Off
    P0757 Shift Solenoid B Stuck On
    P0758 Shift Solenoid B Electrical
    P0759 Shift Solenoid B Intermittent
    P0760 Shift Solenoid C Malfunction
    P0761 Shift Solenoid C Performance or Stuck Off
    P0762 Shift Solenoid C Stuck On
    P0763 Shift Solenoid C Electrical
    P0764 Shift Solenoid C Intermittent
    P0765 Shift Solenoid D Malfunction
    P0766 Shift Solenoid D Performance or Stuck Off
    P0767 Shift Solenoid D Stuck On
    P0768 Shift Solenoid D Electrical
    P0769 Shift Solenoid D Intermittent
    P0770 Shift Solenoid E Malfunction
    P0771 Shift Solenoid E Performance or Stuck Off
    P0772 Shift Solenoid E Stuck On
    P0773 Shift Solenoid E Electrical
    P0774 Shift Solenoid E Intermittent
    P0780 Shift Malfunction
    P0781 1-2 Shift Malfunction
    P0782 2-3 Shift Malfunction
    P0783 3-4 Shift Malfunction
    P0784 4-5 Shift Malfunction
    P0785 Shift/Timing Solenoid Malfunction
    P0786 Shift/Timing Solenoid Range/Performance
    P0787 Shift/Timing Solenoid Low
    P0788 Shift/Timing Solenoid High
    P0789 Shift/Timing Solenoid Intermittent
    P0790 Normal/Performance Switch Circuit Malfunction
    P0801 Reverse Inhibit Control Circuit Malfunction
    P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
    P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
    Read full answer
    May 05, 2012 • 1997 Toyota Camry
    0helpful
    1answer

    Need an emissions schamatic for my 1984 K10 silverado 305 engine
    Unfortunately, there are 13 variations for this engine and year. Was this truck sold or modified for high altitude? Was it sold in California or modified to meet the CA emission standards? Does it have a manual or auto transmission? After narrowing down based on answers to these questions, there are still alternative configurations depending on the particular equipment, so look carefully at the diagrams to see which components are used on your engine. Sometimes you can match the 3 letter code for the diagram to letters in the VIN or a sticker in the engine compartment. Please let me know if you have questions.


    jturcotte_2426.gif

    Fig. Fig. 49: 1984 305 (5.0L) V8 engine-4bbl federal and low altitude with automatic transmission

    jturcotte_2427.gif

    Fig. Fig. 50: 1984 305 (5.0L) V8 engine-4bbl federal and low altitude with automatic transmission alternate

    jturcotte_2428.gif

    Fig. Fig. 51: 1984 305 (5.0L) V8 engine-4bbl federal and high altitude with automatic transmission

    jturcotte_2429.gif

    Fig. Fig. 52: 1984 305 (5.0L) V8 engine-4bbl federal and high altitude with automatic transmission alternate

    jturcotte_2430.gif

    Fig. Fig. 53: 1984 305 (5.0L) V8 engine-4bbl federal and high altitude with manual transmission

    jturcotte_2431.gif

    Fig. Fig. 54: 1984 305 (5.0L) V8 engine-4bbl federal and high altitude with manual transmission alternate

    jturcotte_2432.gif

    Fig. Fig. 55: 1984 305 (5.0L) V8 engine-4bbl federal and low altitude with manual transmission

    jturcotte_2433.gif

    Fig. Fig. 56: 1984 305 (5.0L) V8 engine-4bbl federal and low altitude with manual transmission alternate

    jturcotte_2434.gif

    Fig. Fig. 57: 1984 305 (5.0L) V8 engine-4bbl federal and low altitude with manual transmission alternate

    jturcotte_2435.gif

    Fig. Fig. 58: 1984 305 (5.0L) V8 engine-4bbl federal and low altitude with automatic transmission alternate

    jturcotte_2436.gif

    Fig. Fig. 59: 1984 305 (5.0L) V8 engine-4bbl federal and high altitude with automatic transmission alternate

    jturcotte_2437.gif

    Fig. Fig. 60: 1984 305 (5.0L) V8 engine-4bbl federal and low altitude with automatic transmission alternate

    jturcotte_2438.gif

    Fig. Fig. 61: 1984 305 (5.0L) V8 engine-4bbl federal and high altitude with automatic transmission alternate

    Read full answer
    Oct 27, 2011 • Cars & Trucks
    0helpful
    1answer

    High emisions new cat new sensor
    Hi.

    High emission are often consequence of engine problems. In that case the new cat converter or exhaust and new oxygen sensors will not help.

    High emission from engine occurs because of many different reasons, main causes are:

    Electronic injection problems:

    Do an OBDII scan to find out if there are error codes. If there are no codes check injectors sensors in the air intake (MAF and IAC), check vacuum for leaks. Clean throttle body. Check EGR, IAC, PCV systems.

    Engine internal problems:

    Do a compression test to find problems associated with engine faults (eg.piston rings, head gasket, valves).

    Also make sure that spark plug, fuel and air filter have been replaced. Make sure that there is no misfire or distribution problem.

    Regards.

    Ginko
    Read full answer
    Sep 20, 2011 • 1998 Ford Escort
    0helpful
    1answer

    1989 f150 302 V8 fuel injected emissions problem. Installed new engine from Ford, blew SKY HIGH on low and high idle emissions. Emission numbers were 10-20x max legal limit (over 3000). Replaced the...
    the O2 sensor works on one volt .5 is around the running voltage, i would refit the air hose as it will run the converter hotter at idle.
    Read full answer
    Apr 26, 2017 • 1989 Ford F 150
    1helpful
    1answer

    What is emission system
    THE EMISSION SYSTEM IS DESIGNED TO TRAP AND STORE FUEL VAPORS THAT EVAPORATE FROM THE FUEL TANK.THROTTLE BODY AND INTAKE MANIFOLD DURING NON OPERATION OR IDLING STORE THEM IN THE CHARCOAL CANISTER AND THEN ROUTE THEM INTO THE COMBUSTION CHAMBER TO BE BURNED DURING ENGINE OPERATION.THE PCV VALVE ITS PART OF THE EMISSION SYSTEM.IT SCAVENGING CRANKCASE VAPORS IT DOES THIS BY CIRCULATING FRESH AIR FROM THE AIR CLEANER THROUGH THE CRANKCASE WHERE IT MIXES WITH BLOW BY GASES AND IS THEN REROUTED THROUGH A PCV VALVE TO THE INTAKE MANIFOLD.THE CATALYTIC CONVERTER IS PART OF THE EMISSION SYSTEM IT REDUCE POLLUTANTS FROM THE EXHAUST GAS STREAM IT LOWERS LEVELS OF OXIDES OF NITROGEN AS WELL AS HYDROCARBONS AND CARBON MONOXIDE.THE EGR VALVE PART OF EMISSION SYSTEM IT LOWER OXIDES OF NITROGEN EMISSION LEVELS CAUSED BY HIGH COMBUSTION TEMPERATURES.THE EGR VALVE RECIRCULATES A SMALL AMOUNT OF EXHAUST GASES INTO INTAKE MANIFOLD.SMOG PUMP IS ALSO EMISSION CONTROL COMPONENT IT INJECTING AIR INTO THE EXHAUST DOWNSTREAM FROM THE EXHAUST PORTS TO HELP COMPLETE THE COMBUSTION OF ANY UNBURNED GASES AFTER THEY LEAVE THE COMBUSTION CHAMBER.
    Read full answer
    Aug 13, 2010 • 2001 Ford Windstar
    0helpful
    1answer

    Changing 1989 toyota corolla engine to fuel injectoin
    Yes, and you need a computer, and a different fuel tank system, fuel lines, and emission components from the new engine's car.
    Read full answer
    Jul 14, 2010 • 1989 Toyota Corolla 2 Door
    1helpful
    1answer

    2007 crown vic 4.6 l idles high on startup
    This sounds like a normal condition.What happens is the cold start emission reduction component monitor(software program in the computer) is running.
    Cold Start Emission Reduction Component Monitor
    The Cold Start Emission Reduction Component Monitor was introduced for the 2006 MY on vehicles that meet the
    LEV-II emission standards. The monitor works by validating the operation of the components of the system
    required to achieve the cold start emission reduction strategy, namely retarded spark timing and elevated idle
    airflow.
    When the CSER strategy is enabled, the idle air control system will request a higher idle rpm, elevating engine
    airflow. While this CSER elevated airflow is requested, the low airflow test compares the measured idle airflow from
    the MAF sensor to the commanded idle airflow from the idle air control strategy.
    Read full answer
    Apr 02, 2009 • 2007 Ford Crown Victoria LX Sedan
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