Question about 1997 Chevrolet Cavalier

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98chevcav2.2. starts and runs fine when cold.dies out and will not start again at oper temp until engine is cold again

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Heather core

Posted on Oct 03, 2008

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Posted on Jan 02, 2017

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After I start the engine it runs fine until it warms up to operating temperature and then runs rough and produces black smoke until t dies. It will not re-start normally until it has cooled.


Bad coolant temp sensor making ECU think engine is still cold, thus running rich, as if choke is on. There are two temp sensors, one for dash gauge (one wire) and one for the ECU (two wires). You can remove it and test with voltmeter by placing unit in hot or cold water to compare readings.

Jan 14, 2015 | Cars & Trucks

1 Answer

Motor starts then dies several times when cold


Sounds like the cold start solenoid. It is designed to keep the engine running at a set RPM until it reaches a specific engine temp.

Nov 22, 2014 | 2003 GMC Sierra 1500

1 Answer

2000 tundra v6 5-speed cold start truck runs great, park it for 20-30 min it will start fine but after going 1/4 mile it dies, looses power. pull over and it will backfire and sputter until it eventua


bad need of a tuneup? like new spark plugs, ?
172 , is 02 rich/ lean warning. this one is low oxy for rich.
this code can just be a victim. for sure , with misfire.
means 02 sensor stuck at rich,
what is water temp in engine coolant, at failure? less than 150F?
could be lots of things.
leaking injectors, bad fuel.
injector sticking> causing misfire.
id use a scan tool and watch all sensor when it fails.
too high fuel pressure.
misfires cold, but only luke warm cold starts not fully cold.

just one DTC, no P0300 or 30x misfire codes, not even P0300 pendings?

Jan 31, 2014 | 2000 Toyota Tundra

1 Answer

96 honda civic engine ,starts & runs fine cold-but dies when warmed up


Did you find a fix?
Same problem, wondering how you fixed it?

Mar 07, 2012 | Cars & Trucks

1 Answer

Engine stalls at operating temp. and will not restart until cooled down, when started will sometimes backfire ?


sounds like your auto choke is stuck on had the same problem with a honda i worked on would be fine untill got to running temp then would run like **** and stall out and wouldnt start again till cold

Mar 04, 2011 | 1990 Oldsmobile Eighty Eight

1 Answer

Runs fine til the temp out gets hot enough then dies. Wait ten mins and it will start again and run for a few mins then dies again


you didn't say if it was hot on the temp gauge? no matter, it sounds like you have a stuck t-stat. when the engine is cold, a mechanical valve keeps the water from coming out of the engine block until warmed up, then opens and lts the cooler water in. this cools down the engine and the colder temp of the water shuts the valve again. this happens constantly while the engine runs, and if your t-stat is stuck, the engine heats up the water in the block, but with nowhere to go, simply overheats the motor. a good repair book will locate the thermostat housing for you and should you the repair procedure. (i assume you have checked the water in the rad. low water will give you same symptoms). good luck.

Jun 10, 2010 | 1998 Chevrolet Express

1 Answer

2.0d x-type 2005 Est. Starting problems when engine is warm


Ok, time for car school. The vehicle is operated by the computer, every electrical concept that is. When the engine is cold, it starts fine because the computer has placed it in "cold start mode", putting more fuel into the engine than normally would until Once the engine is warmed up, a temperature sending unit or temp sensor tells the computer to change to normal run mode. IF said temp sensor is faulty and is not telling the computer to make said change, it stays in cold start mode, still dumping excess fuel in the engine that is now not required, cause it's warmed up. Like keeping the choke closed on older vehicles. Now I think you can answer your own question, when this no start action is happening after warm up and it always starts fine when cold, what's the first thing you check ? Right, the unsuspected temp sensor. Change that and no more start problem. Have a wonderful day. Glad I could be of service.

Jul 11, 2017 | 2005 Jaguar X-Type

1 Answer

1994 sonoma stops running when it warms up


Replace you fuel Injector pump and check for any bad or clogged injectors. make sure idle adjustment screw is properly set 1ak+f4pj7cbm32cuniyi2gaaaaaelftksuqmcc

Apr 24, 2009 | 1992 GMC Sonoma

1 Answer

2000 chevy blazer starting issues


swng,
1) Is the service engine soon light ever on when engine is running?
2) Per your description I would look at the ECT sending unit. It sends coolant temperature information the the Engine Control Module for proper fuel delivery for cold engine start. It may have lost its calibration.
Let me know.
Regards,

Feb 24, 2009 | 2001 Chevrolet Blazer

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