96 Concorde check engine light

More then likely the intake manifold gasket is blown out and causing a lean misfire and setting the code. Is the misfire code a #3 0r 6 cyl? Also with the car in gear at idle, do you notice a slight lobe or mis?

Glenn Beasley Chrysler Tech

I will have to ask which cylinder when I take it back and ask the mechanic to check it again. I haven't noticed a slight lobe or mis, but I also don't drive it regularly. Is this intake manifold gasket a difficult/expensive fix?

No...the cruise is operating normally. What would be the best course of action? do an exploratory on the intake manifold or wait and see if more serious symptoms appear?

Use an unlit propane torch, blow propane around the seams of the intake manifold at idle, if idle speed changes (meaning the engine is sucking in propane through the leak instead of air) then you have a leak there.

Ted

You may now have a different problem. There are many diagnostic codes.

I've had my '95 Concord since 6k miles, now at 80k miles. The check engine light has been coming on at random times since I got it. The diagnostic code is always "33" related to the air conditioner. Dealer can't fix it, I'm having to ignore it. My engine and air conditioner run perfectly. My problem is obviously intermittent and not serious.

I suggest you check the diagnostic code when your light comes on. To do so, with the engine off turn the ignition key on/off/on/off/on. After a slight delay the engine light should flash the recent check codes, in number pairs. I believe "55" is end of stored codes, I keep the the code list in my car. After a number of starts the codes are deleted. The full maintenance manual gives the codes and their meaning.

Has for me, many times.

The car was back in the shop for an unrelated problem. Check engine light back on, checked codes. New code is P1289 manifold tune valve ckt open-short. when originally checked, code was P0306 which was not present this time? Any thoughts?

GrtArtiste