2000 Crown Vic Trans or Electrical problem

My 2000 CV has had this problem that comes and goes about every 6 months.
Almost always going uphill and/or accellerating........

1. I can be driving at freeway speeds (60+) and the engine will act like its missing or the tranny is dropping in and out(not down shifting)of gear, more so on the uphill. Sometimes only a little hesitation and then it smooths out.

2.Sometimes it will stall(at 60+ mph)Check engine light will come on. I can coast, shift into neutral, turn the ignition off and restart and sometimes go on my merry way without a repeat for the remainder of my trip. ( FYI~If I pull to the side and try to restart without turning turning the ignition off it will not restart)
I have also had the same situation except instead of the engine light coming on the Oil temp light will come on, tranny will drop out of gear for a few seconds, engine may or may not stall, light goes off, tranny goes back in gear and away we go.

I have had it to different dealers 3 times and they cannot find a problem. The check engine light never stays on long enough to get a code.

Recently I was doing regular maintenance and decided that the engine compartment needed cleaning(big mistake) I sprayed some degreaser here and there and hosed it down gently,(not at full stream) Started it up and it ran like it was missing, check engine light was on solid. 24 hrs later It wasn't missing anymore but it was up to its old tricks in #1 & #2. I hadn't those problems since last summer! :banghead:

Anyone with the same issues??
Is this a transmission or electrical issue??

Thanks.

Electrical, by your description it's a bad relay or ground.

Where? There is no way to tell over the 'net, but I would start at the battery connections and make sure they are ALL CLEAN, and that the ground wire connections are good.

Sounds like your PCM is losing power. If your check engine light comes on, your PCM will actually store the code even after the light is off. Usually until it is cleared with a scan tool, it stays stored in the memory. The only other way to clear the code is to shut off all battery power to the PCM.

Um, if the PCM loses power, it will *think* YOU shut the key off, and it CANNOT set any codes for that.

Actually the PCM doesn't lose power when you shut the key off. You always have a little current flow for what Ford calls the Keep Alive Memory (KAM). If you lose power and your KAM is erased, any codes it may have had would be erased. There's actually a code (I think it's P1670) for KAM lost. This code doesn't set the check engine light, similar to the theft codes, but it does go away after I believe three drive cycles as opposed to the eighty or so of other codes.

Losing KAM will not shut the car off either, or cause any other real problems. All you lose with a dumped KAM is the adaptive strategies and emissions test results.

KAM is NOT the same as "EEC power". The cehicle will drive just fine w/o KAM, but it will NOT run w/o switched power (from the key), which is obviously what I was referring to, and the ONLY "power" that would affect or cause his sysmptoms.