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1995 bonny 3.8. car starts runs rough then dies. check engine light comes on. turn key off then back on and it will start idle rough then die again after several attempts it will start and run pretty smooth but when you get aroud 2200 rpm it cuts out after the car is at operating temp it seems to be fine. any ideas?
i'm having this problem too i changed spark plugs and wires and fuel filter so i know that isn't it i need helpi'm having this problem too i changed spark plugs and wires and fuel filter so i know that isn't it i need help
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Several things come to mind, most common is carbon in and on the throttle body and throttle plate, buy a cheap stiff tooth brush and some throttle body cleaner then remove the filter or tube and have at it until all carbon is gone. Remove then reinstall the TPS because the carbon was holding the throttle (and TPS open) when you installed or reset with carbon it's now "off" that far. Next is a leaking fuel pressure regulator or injector, find the fuel pressure test port and remove the plastic cap. Have someone turn the key off and as soon as the engine is off you depress the schreader valve to release pressure Note the spray. Now restart the engine then turn it off leave it sit until you're sure it won't start then (don't turn key) press the schreader valve if it's about the same not a problem if there's no fuel there you have a leak and if it's an injector it will usually miss at idle and the spark plug should show it after a while it will look "washed" on one side otherwise look at the regulator unplug the vacuum hose there shouldn't be any gas in it then run engine with the vacuum hose to the regulator off there should be no fuel coming from the regulator if there is replace it. I hope this helps. Take Care.
The battery might be low but I doubt it is causing the "no idle" problem. You should have an idle air control valve that the computer uses to adjust idle speed. That valve could be faulty or dirty. Is the check engine light on when the engine is running ?
A stalling problem doesn't have to turn on the check engine light . Try some basic thing's like cleaning the throttle plate (body) air passages for the IAC - idle air control valve . There are videos on youtube , also check for a vacuum leak !
Like to other guy said, give it a tuneup. Also try SEAFOAM to clean carb up of slug. Also check to make sure the butter fly for the choke has not come loose, causing it the choke it down. Failed choke pull-off.
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