How do I reset the computer on my 2004 Astro Van? The mechanic says it has to be reset to see if the error code comes up again, and then take it to him, but he has no time for me to go to have it reset...

Could be low fuel pressure. Should be 50psi min.

In the ECM/PCM. HWat's your problem? Code?

what kind of codes you have?.try to reset,how many came back.

You don't reset it, you resolve what is causing it to register an error. You need to pull the codes from the computer and proceed with testing based on those clues.

Look for vac hoses damaged or dislodged. System is designed to fail in defrost mode.

Reset the ECU / PCM for Check Engine light removing the neg battery cable for 5 minutes to reset the codes. If the warnin glight come on again, I suggest scanning you vehicle for details, one fault is in there.

Good luck (remember rated this help).

Did you reset the code after replacing the sensor? That sounds like the ECM/PCM is in safe mode which allows you to take it to a shop. The code will reset if the correct sensor was replaced after it has successfully started a number of times. If you can take it to the store you bought the sensor at and have them read teh codes off again. They should be willing to reset the code if you bought the part from them.

Also check all of your grounds, a little corrosion caused the same problem on mine. Just had to find the right ground. Mine was on front under pass headlight causing mine. Good Luck

I have a 1986 Chevry Astro Van that I learned abot the hard way that was doing what yours is doing. In my case, after being ripped off by one fast buck mechanic after another, i learned it is the oil pump computer that probably needs to be replaced. If it does not read the right oil pressure, it won't start. But, what myinsance mechanic did was to run a wire from the ignition to the starter, etc. Cost was $11.--/ after he first pt in a starter, fuel pump, new main engine compter, etc, none of this helped it start. Then he did the hot wire thing, bypassing the oil pump computer. I undersatnd that compter is about $65.00. I got ripped off to the tune of 1,000.00 befoer thru trial and error the real cause was discovered.

this van or tipe of vehicles have a very coming problem with the injector assembly fault, if you ever get it to star make sure to see if you see any black smog coming from the exaust or if you notice like spending too much gas then that will be the proble and this part is not too chep to replace