wont stay running cold

[dwight eisler]

I live in a cold winter environment. Temperatures dip well below freezing. I have an 88 daytona turbo. It starts and runs great except when the temp approaches freezing(close to 32f or 0c). Then it fires and stalls, fires and stalls. If I do this enough times, sometimes it will stay running if keep rpm high. If i plug the block heater in it is fine. I had a 88 shadow, same engine, and it would start even at -35. Changed asd, checked cam timing, timing is set dead on, map sensor is new, and so is o2 sensor. Odd that if i warm it up just a tiny bit, ie block heater, the problem completely disappears.

[The Pope]

water temp may not read cold, check codes

welcome to the forum, check out the FAQ section for code lists

[dwight eisler]

Sorry, should have said that there are no codes. It is a spark problem. There is always power to coil, but pulled a plug. There is gas and spark when it fires, then the spark disappears for a bit then the spark returns and it fires.

[NAJ]

The no start condition when cold needs to be diagnosed when the condition is present.

NO START, NO SPARK DIAGNOSING
http://www.turbododge.com/forums/f4/...k-84-90-a.html

[dwight eisler]

Ok thanks. will run all these checks

[dwight eisler]

Well finally got back to working on car. Performed all the tests as per no spark diagnostic. There is always power at the +coil so asd is functional. Checked hep, 9 v on orange, 5v on gy toggles. Rotor is turning. Coil is brand new. -side of coil is suspect as a test lamp flashes for a few cranks while engine fires, then glows dimly as engine does not fire, cycle repeats. Would seem to be coil control circuit so am looking for info on that. Reminder again only does this when it is below freezing. Thanks

[NAJ]

Be sure you have 12 volts on the + side when the problem is present and be sure coil primary resistance is in spec(1.2-1.6 ohms)

[Sid]

My 88 Daytona T-1 had a problem just like yours but in reverse. Mine would start and run great in freezing weather but, summer when the temps went up and did just like yours. Start it first time in the morning, ran great. Make a stop for gas or anything and then try to start it again and it would start and die, start and die...would do it forever unless you kept the accelerator down to up the RPM's. Then after a minute or so, would stay running.
There were two culprits in my case. First time, Dealer changed the Idle Air Control or AIS as Chrysler calls it and car ran great for 1.5 years. Problem returned and they changed the AIS again, problem persisted. Ultimately, they changed the Coolant Temperature Sensor and that solved the problem. May not be what is causing your problem, but worth a check.