1999 chevy astro van 4.3 will not start in morning, after cranking for several minutes it will finally turn over and run fine the rest of the day could it be a bad fuel pump or oil pump
I have the same problem, I replaced the fuel pump. Did NOT solve it. i was told that it is a computer problem. The computer is not sending electric to the fuel pump, by cranking it several times the oil pressure builds up and will over ride the computer and send power to the fuel pump. This is a common problem on these asrto vans.
Posted on Aug 07, 2008
Where is the fuel pump reset switch on a 1999 chevy astro
No such switch .
Posted on Dec 19, 2008
I need to drain my radiator on my 99 Chevy Astro and need to know where the drain plug is
Crawl under he car, it is on the bottom of the tank useualy on the drivers side (it is there, look on both side tanks), it is black plastic with a key shaped paddle to open the drain, it turns counter-clockwise, u can't see it from the top
Posted on Dec 03, 2008
Pulled code p0420 on 99 chevy astro, 2wd, 160,500 miles. Says low-bank 1. Is this my cat converter or do you think its the o2 sensors??
Need to have emissions tested and it just failed. How would i fix the problem, or find out if its really the cat or the o2?
from what i am finding the code means o2 sensors. they recommend replacing them and if this does not work than replacing the cat converter
The catalytic converter has an oxygen sensor
in front and behind it. When the
vehicle is warm and running in closed loop mode, the upstream oxygen sensor
waveform reading should fluctuate. The downstream O2 sensor reading should be
fairly steady. Typically the P0420 code triggers the Check Engine Light if the
readings of the two sensors are similar. This is indicative of (among other
things) a converter that is not working as efficiently as it should be (according
to specs). It is part of the vehicle emissions
system.
causes
A code P0420 may mean that one or more of the following has happened:
possible soloutions
Some suggested steps for troubleshooting a P0420 code include:
One thing to note is that many vehicle manufacturers offer a longer warranty
on emissions-related parts. So if you have a newer car but it's out of it's
bumper-to-bumper warranty, there still may be warranty on this type of problem.
Many manufacturers give a five year, unlimited mileage warranty on these items.
It's worth checking into.
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Posted on Aug 20, 2009
how many quarts of transmission fluid does my 1999 chevy astro van require?
1999 CHEVROLET TRUCKS ASTRO VAN 4.3L 6-cyl Engine Code [W]
CAPACITIES:
Automatic Transmission, 4L60-E Initial Fill..........4.7 liters
Automatic Transmission, Total Fill 4 speed 4L60-E..........10.6 liters
To check fluid level, transmission should be hot and engine running at idle. Pull the transmission dip stick out "red" wipe clean and re-insert. Check level of transmission fluid as indicated on the dip stick using the second reading and make sure the Astro is parked on leveled ground. Add Dexron III or VI as needed and do not over fill.
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Posted on Apr 01, 2010
P01870 code
The P1870 DTC code is trans-axle component slipping. In most cases you can replace the transmission control solenoid and it should solve the issue. These solenoids are known to kick this code. Also I would recommend doing a transmission service.
Posted on Dec 30, 2010
The running lights (daytime headlights) no longer come on when ignition is on. The wiring diagram shows a DRL relay (daytime running lights) but does not state where this is located?
follow the wires to the drl relay. It must be inline from the regular light switch to the headlamps. I have a 1990 Cadillac Deville that has an aftermarket module that controls the daytime running lamps, and it is mounted on the driver's side wheel well.
Some relays are found in the fuse box under the hood.
If your daytime running lamps burnt out, take it to an electrical shop and ask them to check it out.
If you buy an aftermarket daytime running lamp kit, they can install it for you.
But, I agree, you should check for voltage and function at the relay for the daytime running lamps on your Astro.
But, if all else fails, the electrical shop should be able to diagnose and repair this problem.
Posted on Jul 21, 2010
I have a 1999 Chevy Astro that is giving me a P0300 trouble code. So far I've replaced the plugs, wires, cap, rotor, coil, fuel filter, air filter, and catalytic converter. I'm still having the stumbling-hesitaton problem. I have noticed that it's worse when the van is cold and almost non-existent when it's warmed up. There are quite a few other things that could cause this random misfire but rather than throw more money at it and hope it sticks I'm hoping someone could point in some kind of direction!!!
P0300 Diagnostic Code - Random Misfire
Technical description:--
Random/Multiple Cylinder Misfire Detected:---
Exactly what does this code means:--
Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.
A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.
Symptoms:--
the engine may be harder to start.the engine may stumble / stumble, and/or hesitate.
other symptoms may also be present…There may be rough idle, sputters and stallsand jerks.
Causes:--
A code P0300 may mean that one or more of the following has happened:
Faulty spark plugs or wires, Faulty coil (pack), Faulty oxygen sensor(s)
Faulty fuel injector(s),Burned exhaust valve, Faulty catalytic converter(s)
Stuck/blocked EGR valve / passages, Faulty camshaft position sensor, Defective computer.
Possible solutions for this error problem:--
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the vehicle, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or un-metered air getting past the airflow sensor, or an EGR valve that is stuck open.
Posted on Aug 26, 2010
Won't start when weather is damp
Had the same issue with our 1999 chevy astro van, would crank but would not start. It had been raining and windshield had a leak, after 2 days of no rain it started. Pulled codes and was the Security system in the ignition switch. Hope this helps.
Posted on May 23, 2017
Cranks fine starts for two seconds and cuts off and security light is on so no codes
If the light is on there are code stored ! Not in the PCM/ECM engine computer . In the BCM , do you know what that is ? body control module ! Need a factory scan tool or equivalent to check !
DTC B0688 Security System Indicator Circuit High
DTC B2947 Security System Sensor Power CKT Low
DTC B2948 Security System Sensor Power CKT High
DTC B2957 Security System Sensor Data Circuit Low
DTC B2958 Security System Sensor Data Circuit High
DTC B2960 Sec Sys Sensor Data Incorrect but Valid
DTC B3031 Security System Controller in Learn Mode
DTC B3033 Security System Indicates Tamper
DTC C0559 EEPROM Checksum Error
Why does everyone want to chop up things , by pass etc... The right fix could be cheaper then ruining your vehicle . Chopping up wiring harnesses . Their are by pass module , don't know how much they are . It may or may not fix the problem . Pulling the code and doing the diagnostics is still the best solution .
Posted on Jan 08, 2017
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