Update:
Auto shop did a scan with OBD tool, but it pulled no codes. Here is a summary of all the possibilities that have been mentioned here, as to why my car doesn't like to run at idle. Oh, btw, I have noticed that this problem is much worse when the car is cold. It will still cut off at idle at other times, but the problem is quite severe when the car is first cranked up in the morning.
On the following list, I have had the items repaired, cleaned, or replaced in the last year or so:
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cps / done recently
cps plug/ maybe needs cleaning ?
tps /
gummy throttle body/ cleaned about a year ago
fuel pump / never been replaced
fuel filter / never replaced
idle air control/
manifold air sensor/ never replaced
vacumm leak ? // could be, but mechanic said would usually make it run lean, and pull a code
idle air passage / cleaned when throttle body cleaned about a year ago
weak coil/ and/or bad spark plug or cables/ ?? has original coil
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On a cold morning, the car will start right off, run a second or two, then shut off. I may have to crank it 4 or 5 times to get the rpm up enough that I can throw it in gear and take off. At very low speeds of maybe 10-15 mph, or when stopped at a stop sign, the engine will stall. NO problems at any speed other than at or near low idle. Engine will always restart, but sometimes hard to get into gear again and get going, as it stalls again at such low speed. So, to get it going, I have to keep the idle up to about 1000 rpm and then shift it real quick to drive, and take off.
Any more ideas here ? Why is it more severe when engine is cold, first thing in the morning. I am not a mechanic, but it seems that should be a big hint....
Thank you !!
James
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This car has 245K miles on it. At very low speeds of maybe 10-15 mph, or when stopped at a stop sign, the engine will stall. No problems on initial crank, and NO problems at any speed other than at or near low idle. Engine will always restart, but sometimes hard to get into gear again and get going, as it stalls again at such low speed. So, to get it going, I have to keep the idle up to about 1000 rpm and then shift it real quick to drive, and take off.
I have noticed however, that in order to get it cranked again, I have to hold my accelerator pedal down to the floor. This has **never** been needed before, either when the engine is cold is hot.
Put in new CPS about a year ago. I am NOT a mechanic, but this seems to me like a fuel related problem, such as a fuel filter or fuel pump. Is it hard to "test" a fuel pump ?
Please give me some tips on this so that I can better discuss it with my mechanic.
Remember, no problems EVER above 20 mph.
Thank you !!
James