96 Plymouth Voyager misfires / stumbles only when warm...help
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96 Plymouth Voyager misfires / stumbles only when warm...help
This is for a friends grandma who is the widow of a WW2 vet. She is 85, still strong and likes being independant. Her minivan has gone **** up and my buddy and I are trying to fix it for her.
Its a 96 Plymouth voyager 2.4L automatic about 115K miles, doesnt smoke and is overall in very good shape. Not sure when was the last time the timing belt was changed, We get a code 43 when we scan the dash codes.
Starts fine, and runs good when cold, idles and sounds great until it reaches operating temp. Once it gets warm it misfires, hesitates, stumbles and shakes horribly. On the dash we can get it to flash a code 43 which means its getting a misfire. We can't drive it to autozone because it might leave us stranded.
So far we have checked all the vaccuum lines for leaks, checked the intake manifold for leaks with carb spray, changed the camshaft position sensor, changed the spark plugs, checked the plug wires for nicks and or cuts, checked the coils, and cleaned out the IAC valve. One thing strange about this vehicle is that we could not find the EGR valve.
What I am guessing is that one of the sensors is throwing it off once the computer takes over to control the emissions, hence why it only does it when its hot. I hate to have my buddy start throwing money at it randomly since we already replaced the camshaft sensor at $75 bucks and that wasnt the problem.
Weve been reading online and some folks say its the MAP, some say its the O2 and some say it could be the coolant temp sensor.
Im puzzled by this. Any help would be appreciated.
Its a 96 Plymouth voyager 2.4L automatic about 115K miles, doesnt smoke and is overall in very good shape. Not sure when was the last time the timing belt was changed, We get a code 43 when we scan the dash codes.
Starts fine, and runs good when cold, idles and sounds great until it reaches operating temp. Once it gets warm it misfires, hesitates, stumbles and shakes horribly. On the dash we can get it to flash a code 43 which means its getting a misfire. We can't drive it to autozone because it might leave us stranded.
So far we have checked all the vaccuum lines for leaks, checked the intake manifold for leaks with carb spray, changed the camshaft position sensor, changed the spark plugs, checked the plug wires for nicks and or cuts, checked the coils, and cleaned out the IAC valve. One thing strange about this vehicle is that we could not find the EGR valve.
What I am guessing is that one of the sensors is throwing it off once the computer takes over to control the emissions, hence why it only does it when its hot. I hate to have my buddy start throwing money at it randomly since we already replaced the camshaft sensor at $75 bucks and that wasnt the problem.
Weve been reading online and some folks say its the MAP, some say its the O2 and some say it could be the coolant temp sensor.
Im puzzled by this. Any help would be appreciated.
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Registered User
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The belt has not been changed that we know of. But if it were a tooth off it would run like crap all the time.
I was reading somewhere that it could be a overheating fuel pump due to a halfway clogged fuel filter. Sounds plauseable but there are so may things to check I need to start with basics and try to narrow it down.
I was reading somewhere that it could be a overheating fuel pump due to a halfway clogged fuel filter. Sounds plauseable but there are so may things to check I need to start with basics and try to narrow it down.
