Chevy Corsica 2.8L V6 stalls on touch of gas pedle

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Does it work normally after it has warmed up? Things to check: Coolant and
Air Charge temp sensors, idle relearned correctly if the ECM has lost
battery voltage for any reason, make sure you have the latest PROM, There
are 4 new possible PROMS available depending on whether it is CA or FED
emmisions and Auto or Manual shift. These engines also suffer from a
buildup of carbon deposits on the back of the valves that can act as a
fuel sponge when cold. Let me know if you need more info.
Jordan Blessing L1 Master Tech

I have 93 Corsica w/4 cyl.It acts like it runs out of gas.Replaced fuel pump,same thing,Replaced relay.When it quits I don't hear the pump run.When it cools off it will again run for a short distance and I can hear the pump.Any help please. Lewis

ok, this is going to sound weird, but if you replaced the battery recently, it might be that. I have the same model and when I replaced the battery it did the same thing, it started fine, and ran fine for like 20 minutes and then it would stall and idle oddly. I got it towed to a tech, and they couldn't find out what it was. Long story short, there was some sort of setting on the computer that makes it do all that stuff when the battery is replaced. It actually happened to me again the next time i had to replace the battery.

Sorry, it was cause my cooling fan not work right, I wrote Cause your cooling fan

Socket melted and shorted, cause your cooling fan working not normal, I have dropped my car to Van nuys, Valley motors for more than 7 times, and also wrote a letter to GMC, I told the dealer, if they don't fix the over heat problem , I would call ABC , CBS and NBC and burn the car in front of the dealer, finally they put a wire by passed the fuse and temporary fix it, until I found out, the dealer was closed.

I was an Union 76 oil dealer for 12 years, I never thought and never had such experience, maybe your sockets melted and caused such kind problems.

I remember during that time, I had to put a 3 feet 2 x 4 wood in my trunk and when the car was over heated, I had to open my hood and put the 2 x 4 in and tight it, let the air cooling the engine, because the fan didn't work. Good luck my friends.

Hi Jim

Seen it. This reply assumes a six cylinder engine (four cylinders
don't usually have this problem). I'm surprised that the dealer was
unable to uncover the root cause. Common problem. When the symptom
occurs, use a scan tool (serial data device) to look at the engine
data. The coolant temperature sensor will read extremely high. Reach
over, remove the glove box, and thump the silver box behind it and to
the right. This is the ECM. The problem may temporarily dissappear.
To effect a more permanent repair, replace the ECM with the updated
part number 16196344. It will contain many improvements. Your current
part number is 1227730, a junk unit right from the factory. One other
item of interest, check the fuel injector resistance. The injectors
are wired in parallel in banks of three. The connector is located at
the back of the intake plenum. There you will find four wires, two
pink/black, one green, and one blue, if memory serves. Measure across
a pink/black to green (or blue), the value should not be less than 4.0
ohms. Good luck. E-mail with the resolution, please.

GM tech

Sounds like you may have a fuel pressure problem. When was the fuel
filter last replaced? Have the pressure and pump output checked if the
filter is fairly new. About 36-40 PSI at idle is about right with spikes
to 45-50 or more when the throttle is cracked. Check this at the Schrader
valve on the fuel rail. If the pressure is not right, the pressure
regulator may be goofy or the vacuum supply to it may be bad.

Failing a pressure problem, the next things to check are the MAF sensor
(some '88s may still have them even though GM tried to get people to
switch to speed/density systems) or the MAP sensor and the throttle
position sensor readings through a scan tool.

Good luck,

MJP

begin include of 3 messages

Does it work normally after it has warmed up? Things to check: Coolant
and
[snip]

Jordan Blessing L1 Master Tech



Sounds like you may have a fuel pressure problem. When was the fuel
filter last replaced?

changed it, no different. jf

[snip]
Good luck,

MJP


Seen it.
[snip]
Reach over, remove the glove box, and thump the silver box behind it
and to
the right. This is the ECM. The problem may temporarily dissappear.
To effect a more permanent repair, replace the ECM with the updated
part number 16196344. It will contain many improvements. Your current
part number is 1227730, a junk unit right from the factory. One other
item of interest, check the fuel injector resistance.

checked: 5.2 ohms each, while the engine was working. jf

Good luck. E-mail with the resolution, please.

GM tech

end included messages

Thank you very much for your posts.

Today, it failed in the fast lane while my wife took my son to school.
She taped the ECM, it ran for another 2 blocks. Towed it to the
dealer, he replaced the ECM. I will repost next week to let you know
if this really was the problem.

Also, I have to give several atta-boys to the Fremont California,
Centeral Chevrolet , service manager Ken (oops, I left his last name
at work). He has been a joy to work with! And changed the ECM in
record time today!

Regards,

jim

p.s. that was yesterday. I replyed, but hit the wrong key and sent it
email to the last person to reply instead of to this news group:(
jim

Bingo,
that did it. The ECM module was replace last week, No trouble
since.

Everyone,
thank you for your replys.

Regards,

jim

p.s. GM tech, your message doesn't have a full address, so I don't
think that I can reply by email.

jim

Bingo,
that did it. The ECM module was replace last week, No trouble
since.

Everyone,
thank you for your replys.

Regards,

jim

p.s. GM tech, your message doesn't have a full address, so I don't
think that I can reply by email.

pp.s. I'm not sure if the message got through, so I'm resending it.
jim

jim

Dear Mr GM Tech,
I have been having trouble making slot machines (4 cylinder) work as
desired. Do you have a thump for this problem?

Thanks in advance,
Vic