I have a 1994 Dodge Caravan with a 3L engine that runs great going down the road and under acceleration, but when you stop or let off the gas at low rpm it stalls once the engine is warm. In cold weather it doesn't seem to be as bad and when you first start it up in the morning it runs ok.
After advice from someone I changed the Coolant Temp Sensor with no change to the performance. I was also instructed to pull a plug wire while the engine was running and there was really no change in doing so on any cylinder I tried.
I had the same issue. I had to replace the fuel pump. this does not because there is a rubbber hose that connects the pump to the metal fuel line and this was eaten through. the pump still worked it was just that line failed.
My 1994 Caravan with the 3.0L used to stall occasionally when warm at low rpm. Several years ago I read an article on the internet on stalling and hesitation on these vehicles. The writer recommended spraying an entire can of Mopar Combustion Chamber Cleaner {available at any Dodge/Chrysler dealer} into the throttle body while the car is idling. Then shut off the motor and let it set to dissolve the carbon deposits. After a couple of hours, drive the car and try to do at least 5 full throttle starts as traffic allows - floor it, slow down, repeat. This is supposed to burn out the excess deposits and it worked for me. I use this stuff about every 6 months now, and I haven't had a problem with stalling in years. In fact at over 200,000 miles, my Caravan performs better than it did 10 years ago. A can costs around 7 bucks, so its a really cheap fix!
It just might be that the choke is stuck open.
Here are the most common causes of idle surge, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake
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