Question about 1992 Chevrolet Lumina APV

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Engine cuts out and Backfires

Run good until engine warms up,then engine starts cutting out,bacfires,and catlatic converter gets cherry red hot

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First thing i would check would be the mass air sensor. Sounds like its running rich after it goes into closed loop fuel. In open loop it has preset values and are based on the temp sensor. Then either run on the map sensor or mass air which everone it has.

Posted on Dec 28, 2008

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Car runs rough or cuts out when engine warms up


If your car starts perfect from a cold start then starts playing up when it reaches normal running temp, or if it even cuts out and then wont start again until the engine has cooled down then your going to need to get the following checked.

the most likely cause of your problem is going to be a bad oxygen sensor or lambda sensor for its proper name, now the reason it points towards this being the fault is that this part does not start working until the engine or exhaust is near normal running temp.
so you will find that your vehicle will start and run perfect when cold how ever as soon as the engine gets warm this part will start working and cause the car to cut out due to it sending the wrong info to the car fuel management system.

now you also need to bar in mind that this also depends on where your oxygen sensor is in your exhaust now if the sensor comes before the catalytic converter then the chances are your problem is going to be with this sensor, how ever if your sensor comes after the cat then it could also be the cat that is at fault.
if your cat comes before the sensor then it would be a good idea to have a diagnostic check done as you could spend money replacing the sensor and find out the fault it with the cat so bare this in mind when finding out the fualt

on May 26, 2010 | Ford Focus Cars & Trucks

1 Answer

My jetta 2000 stop running it was driving with out straight and it just shut off the exhaust was color cherry what can it be help me out


Is your exhaust system plugged ? they say if your catlatic convertor is plugged it will have so much back pressure your engine will shut down and the red fumes could be its over heating the metal.

Sep 22, 2014 | Volkswagen Jetta Cars & Trucks

1 Answer

When my 1990 subaru legacy is cold it runs good then after 10 miles it starts skipping engine light comes on and a strong ordor of gas can be smelled. it does not run hot but when it starts to cut bac


Could be a faulty O2 sensor. The sensor would not take action until the engine warmed up. Have you checked for trouble codes in the engine computer ?

Jul 28, 2014 | 1990 Subaru Legacy

1 Answer

MY 89 4X4 BLAZER BACKFIRES IN THE ENGINE HOW DO I FIX THIS


The backfire could be a problem with the distributor cap or plug wires, or lack of fuel. The cap or wires could get damp and short out until the engine gets hot.
The fuel pressure could be low or not steady until the engine warms up.

Dec 17, 2012 | 1989 Chevrolet S-10 Blazer

1 Answer

My car just cut off,when try to restart it spits back thru breather ,runs a little but willnot accelerate,also when it does finally start,cataylic converter gets cherry red


the cherry red catalytic converter is the sign of a complete blocked cat and needs immediately replacement. The starting problems you have are due to this situation. Change the cat and you will see improvement.

Dec 01, 2012 | 1993 Buick Century

1 Answer

Runs good at first then drops off and keeps getting worst. Exhaust manifold got cherry red


Check for the timing and re-adjust valve clearance...waht kind of engine you have...

Sep 12, 2012 | 2001 Honda Civic

1 Answer

Hard starting,may run ok until it gets warmed up,ticking,backfire


either bad head gaskets,oil pump is bad,start with simple things change oil & filter start car listen to see if you have an air leak around intake and or heads hook an oil compression tester up and see if oil is pumping properly if not could be a faulty oil pump

Oct 23, 2009 | 1999 Chevrolet K2500

1 Answer

Vehicle cuts out and even backfires (blacksmoke) when driving down road does not die just does not run smooth. Changed oil twice oil is black, fluids to help clean, pluggs are good, wires are good when it...


If it seems to run better when it's first started (cold) and gets worse as it warms up. You can try disconnecting the coolant temp sensor and jumper the terminals in the connector (wire side) with a paper clip. The coolant temp sensor is either in the intake manifold or the thermostat housing and has a 2 wire connector. Jumping the connector will make the computer think that the engine is hot (warmed up) and will not richen the system. If doing this helps then replace the coolant temp sensor. Hope this is helpful.

Apr 28, 2009 | 1987 Ford Ranger

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