Won t start

change the thermostat first. you may other problems. check egr valce, air filter air temp sensor engine temp sensor. take to autozon for diagnostics. they will give you codes and what they mean.

the ecm may be bad,
P0103 OBD-II Trouble Code Technical Description Mass Air Flow (MAF) Circuit High Input What does that mean? Basically this means that there is a problem with the Mass Air Flow High (MAF) sensor or circuit. A more technical description would be that the MAF circuit had higher than expected voltage (air flow). Other MAF sensor circuit DTC trouble codes are P0100, P0101, P0102, and P0104. Symptoms You will likely not notice any serious drivability problems, although there may be symptoms such as a general decrease in power or sluggishness. Causes A code P0103 may mean that one or more of the following has happened: The MAF may be disconnected, or a wiring connection may be bad The MAF sensor may be damaged The vehicle computer may be faulty (very rare) Possible Solutions The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures: Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires. Inspect for any air leaks near the MAF sensor. Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor. Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information) Replace the MAF sensor. Register now to ask a question (free) Related P0103 DTC Discussions 2005 Duramax 6.6 P0103 help I have no clue where to begin looking for the solution to this code. Mass Air Flow (MAF) Sensor Circuit High Voltage is the description of the code, I've looked on various forums and i cant seem to find a definite cause. Ive cleaned the MAF several times with MAF cleaner. I seem to only get this c... 2002 Hyundai accent L 1.5 P0103 Put in a new MAF sensor but code still remains for MAF sensor high voltage. Using scan tool, the airflow rate=920 cf/m and the intake air temp reads -40?F at idle. Both readings are way out of the norm. Not sure what to do next, any ideas would be appreciated. P.S. I traced back the wires for MAF se... 2001 Mazda MPV p0103 & p0174 codes recently, this minivan has a P0103 & P0174 code. researched about the codes and MAF sensor seems like the common denominator between these 2 codes although according to Mazda, P0174 affected part is the fuel injection system where fuel trim system too lean while the 103 has the MAF as the part ... Corolla with MAF codes p0171 p0100 p0101 p0103 I have a 2000 corolla that I bought last fall. It had soft codes that didn't store. Now it has hard codes 0171, 0100, 0101, 0103. Today it started chugging and lurching during hard acceleration. I was a Toyota technician 10 years ago, but never really dealt with this particular model. It has 11... 2002 3.8L Pontiac GPX (P0172, P0101 and P0103) Hello, I have been having some rough starting, rough idle and stalling issues. I have printed off the P0172 page and started to replace items. Two weeks agao I got MAP codes. 1. So I replaced the MAP. It still had a stalling issue/rough idle. 2. So I changed the Idle control, PCV, cleaned my air fi...

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It could be many things.
When the engine crank but won't start
Retrieve PCM faulty code if any.
Engine need 3 things (Fuel, Air, Fire (spark)
1- Fuel = fuel pump working during the problem you can hear a sound at the fuel tank cap (remove)
All Fuel Injectors working.(Power and the spray).
2- Air = MAF defect (Mass Air Flow) no code will be set
When the engine is running with a screwdriver lightly hit the MAF the engine will stall if it's the problem.
air filter restrictions
3- Fire= Is there spark at all spark plugs wire?

Find out the ground of power windows it could be the same as fuel pump or ignition system (Ground corrosion, high resistor)
and many more.
See good technicians to fix your car..

Hope it helps

Beav1 I suggest 1/2 tank of premium and at least 2 bottles of fuel injecter cleaner (alcohol) and blow her *** out good on the highway!!!!............. Then reassess your situatiou

First off, when was last healthy tune up? Plugs, plug wires, ALL filters and a good fuel system cleaning? I'd start there, then have parts store like Autozone, Advance etc.. do an OBII fault scan. I'm suspecting of tune up doesn't help maybe an oxygen sensor or a MAF (Mass Air Flow meter) are strong possibilities. But tune it first, and get scan done before just throwing parts at it.

Clean the throttle plate-CRC Throttle Body Cleaner
Clean the MAF Sensor--CRC MAF Cleaner

Have the O2 Sensors tested

If it is 10 years old, the exhaust
converter may be plugged,that's
not good and shouldn't happen

Check for vacuum leaks
A leak causes the O2 Sensors to add fuel,
to account for extra air

Make sure the air filter box and ALL
Ducting to throttle is air tight

It should be along the air intake. A block box about 1 1/2" x 2 1/2" held on by 4 ? screws. Easy to replace, but kind of pricey. They make a product for cleaning them. Try that first. Do not touch the wire resistor that goes into the intake. It's delicate.

The most common reasons for that situation to occur are as follows;

1. The fuel filter is plugged up or the fuel pump is malfunctioning.

2. The air filter is plugged up and is limiting the air flow to the MAF sensor. (Mass Air Flow)

3. The MAF sensor is faulty.

4. There is an air or vacuum leak in the air induction system.
(Check the air induction system and be certain that there are no air or vacuum leaks, especially between the MAF and the throttle body, and that all of the hose clamps are tight on the air induction boot between the MAF and the throttle body)

Any one of these can cause that to happen and any un-metered air getting past the MAF will result in poor engine performance.

You should try cleaning the throttle body - remove the air box from the throttle body spray in cleaner and then work it in with an old toothbrush. I had the same issue with my 2005 and this fixed it right up.

Same way you changed the front, but harder. You have to remove the air cleaner and hoses, then you can reach around the back side of the motor. Pain in the ****.