I have a 93 Dodge Colt 1.5 liter engine. I've noticed in the last month or so after it starts that the idle seems to go high and take 15 or 20 seconds to get back down to normal. Two days ago I went to the store and got back in the car and it just cranked over and would not start. I waited about 1 minute and tried it again and started right up. Then I went to the gas station, got gas and again it would just crank and not start. Waited about 1 minute and started right up and got me home about 10 miles away. Later that same day I did about a 50 mile trip with no problems. Today I started it up and got about 1/2 down the road and noticed the Check Engine light lit up and about 5 seconds later the engine died. It's a 5 speed so I took it out of gear and cranked it over while still rolling but would not start. I put it back in gear and pumped the gas pedal quickly and it started back up. but then died about a mile down the road again. So I waited about a minute and it started again so drove it home. It's got about 140,000 miles on it. Mike
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Could possibly need a new thermostat, the thermostat opens and closes depending on the heat of the coolant. maybe also check your heating core. as well as the quality of you coolant.
Check carpet or anything that can keep idle incorrectly.
==== When engine is cold,use 1/2 can of carburetor to clean out the interior. ==== Check your service record for the last catalytic converter replacement
If you has your last smog check report handy then look for the Nox reading. If it's on the high side then your catalytic may need replacement. ==== Take a long drive (high rpm if possible) to clear out the carbon on the cylinder heads. ====
probably oil, it may be too thick when it's cold but once it warms
up it liquefies and your engine runs smoothly. you could try changing oil, I'm
guessing if you have a high performance oil the chances this is the problem may
be greater since high performance things are usually geared towards working well
when everything is hot
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