A friend and I have changed out the ECU, transmission computer and ETAX relay on my 95 Chrysler LHS. Yesterday I replaced the input/output sensors in the transmission. I took it for a short run last night and an extended run tonight, approx 30 minutes for the ECU to acknowlege the new sensors. It did OK for a while. Shifted into all gears. Albeit a bit bumpy but wasn't dragging. When on the freeway, it bogged down again into 2nd gear. I pulled to the shoulder, turned the ign. Off/on again and got it home. The check engine codes are 12 and 55. Which I understand to be disconnect of ECU/battery and end codes. The check engine light has never illuminated since I've owned the car (12) years. I'm wondering if it's a trans. Pump problem, tranny solenoid, throttle position sensor or relay shorting out. This has me absolutely baffled. I did notice tonight smoke coming from under the hood. I checked the tranny fluid, fairly new fluid and filter change and noticed what looked like oil burning off the manifold. If the valve cover gaskets are leaking could that cause a shifting problem with the engine sucking air? My friend, an elder, 35 + years engineer/electrician retired from GE and he is also stumped. I also understand Chrysler is notorious for wiring issues. Any insight would be greatly appreciated. Thank you very much for your time.
have the same problem?
Tuesday, February 5th, 2013 AT 7:33 AM