Question about 1991 Buick Park Avenue

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Replace ECM car dies when warm

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Check idle air control valve ok let me know or tps sensor

Posted on Dec 02, 2012


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My 2007 GMC envoy Denali after it has been running for a few minutes the engine dies either sitting there or while driving, the engine will turn over but will not fire. P1682 code is confirmed

There are 2 ignition 1 voltage circuits supplied to the engine control module (ECM). The first ignition circuit is
provided by the powertrain relay, through a fuse. This ignition 1 voltage circuit supplies power to all the
internal ECM circuits associated with the throttle actuator control (TAC) operation. The second ignition 1
voltage circuit is supplied by the ignition switch through a fuse, and is used to power the remaining internal
ECM circuits. If the ECM detects a voltage difference between the 2 ignition 1 voltage circuits, DTC P1682
will set.

Get a subscription to and print out the troubleshooting steps. You've already wasted more than the cost of a good manual by replacing a good switch.

Aug 07, 2017 | GMC Cars & Trucks

1 Answer

Dies when warm oil light comes on and check engine

If it is around 100k miles it maybe the ECM they fail a lot on those.. If you can get a scan and see if the ECM is bad let me know I maybe able to rebuild yours/replace it.

Dec 01, 2013 | 2008 Ford Explorer

1 Answer

My gmc 4.3 stalls when warm and wont start without ether. then it runs fine

I had the exact problem with my 1993 chevy c1500. I found that the IAC was sticking so the engine would die at idle after warming up and the ignition module was pulsing the ECM intermittently after the engine warmed up so the fuel pump wasn't being turned on after the engine died....I replaced the ignition module and the IAC valve and all is good. I don't know if testing the ignition module reveals that it isn't sending pulses to the ECM.

Mar 28, 2013 | 1991 GMC Sierra

1 Answer

96 Dodge Runs fine but after warms up it dies,cools n will crank n run good then dies again after warming up.

Hey Dennis,, DON"T BECOME A PARTS REPLACER..(some people who "call themselves mechanic's" are just that!),.. .take this Dodge to a qualified professional... talk to them..
You say warm... do you mean full running temp?? .if so, you may be experiencing a vapor lock,, fuel "boils" when the engine is hot.. when it cools its no longer hot enough to cause this..(S.W.A.G.)

Jun 19, 2017 | Cars & Trucks

2 Answers

96 Dodge Runs fine but after warms up it dies,cools n will crank n run good then dies again after warming up.

if you dont know anything about cars then take it to a dealer as it will be cheaper in the long run

Apr 08, 2012 | Dodge Cars & Trucks

1 Answer

My Volvo 940 GL has a problem. The engine dies after 2hrs of running. Party's changed to no avail(pickup coil, power unit, secondhand rectifier fixed in, serviced the idling valve, fuel pump relay...

When the engine warms up engine management sensor warms up and the resistant builds up,signals dont reach the ECM,out all that was replaced what about the cranksensor?that is a popular failure when warm4_2_2012_12_42_46_am.jpg

Apr 01, 2012 | 1995 Volvo 940

1 Answer

Timing is jumping after a new distributor

thr timing always jump if uoy dont have e1 te1 conected

May 05, 2009 | 1995 Toyota Camry

1 Answer

1991 Mazda truck starts, then dies unless

Not a solution but i am going through the exact same nightmare and same symptoms with my 1991 mazda b2200. I've apwnt over two grand to have my rebuilt TWICE and my alternator replaced and still does the same thing just starts only to die 2 seconds or so later unless i let it warm up to its max but will still die when taking turns and stopping at lights.

Mar 23, 2009 | 1991 Mazda B-Series

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