87 Reliant, power loss and stalls. Got codes but dunno what.

Hi streblo...

Not a mechanic, so I stand ready to be corrected, but I think you'll find that "speed control" doesn't refer to cruise control, but rather to the speed sensor...

I further suggest that it's in the transaxle, and is responsible for "deciding" whether the car is idling or coasting, and the computer uses that information to determine where to put the idle air control motor.

Take care.

Ken

Code 34=Speed control solenoid circuit driver. This code will be set if vehicle does not have cruise. 33 will also be set if no A/C.

Vehicle speed sensor would be code 15.

So Mike, this means that 34 and 33 will be set as default codes in my cruise-less and AC-less car? in other words, I'm getting no fault codes in spite of the evident failures. Any ideas on where to loook first?

Yes. I don't know why chrysler did it that way but if you don't have cruise or A/C, those fault codes with be set.

Any ideas on where to loook first?

Don't know how many miles you have on that but a compression test might be a good place to start. Then I would check the usual, plugs, wires, cap, rotor. You didn't mention if you have a carb or fuel injection. If it's carbureted it might be time for an overhaul or replacement. If it's fuel injected check the idle speed motor. You might also want to hook up a scan tool that can read sensor data while on a road test to see if you have a sensor that is out of spec, but not out enough to set a code. A bad O2 sensor or MAP sensor may cause those symptoms.

Hi, I have an 88 reliant and I am almost experiencing what you are going thru. My 2.5 liter 4 cyclinder has about 300 000 plus kilometers on it, and I do have aslight power problem with starting and idoling. it tends to want to stall and idol very roughly, even though its fuel injected, something is not right... Ii replaced all spark plugs wires cap and rotor and yet its been almost a year since I replaced it entirely, it still runs roughly in both warm and cold temps. I think my problem may be coolant related. have a leaky radiator and leak about 2 liters of water every 2nd day i have to refill it, that is when it really loses power and becomes sluggish in acceleration when water is low. Not sure if this is of any help to you so thought i may run this issue by you.

The main problem was a faulty spark, the car was actually running with

Cheers

downwithdodgeandchrysler wrote:

If the car will not start with the map sensor connected and will when it is disconnected you found your problem!!! replace the map sensor because it is shorted out.

Glenn Beasley Chrysler Tech