|
Thanks everyone for your great suggestions.
That said, I am still having the same problems (original post pasted below). I still havent tested the computer (maybe this weekend) and the new (used) AMM isn't in yet.
I still have a couple of questions.
When I pulled fuse 1 to reset the ECU, the car ran like a top after I put it back in. The fuse had been out for over 15 minutes. I had also cleaned the AMM connecter. I thought I was home free.
Drove to work and when I went out to drive home, same symptoms. I took fuse 1 out for about 2 minutes and the car runs like a top again.
That worked until today. Drove home and just as I was pulling in the driveway the check engine light comes on and I stumble up the driveway.
What is interesting is that I still get the 322 and 121 code but not the other. In addition, if the problem was with the AMM, shouldn't I notice a difference when I unplug it and start the car back up?
Regardless of whether the AMM is plugged or unplugged, the idle jumps up t0 1400 then cycles between 1300 and 1400.
Any ideas.
Thanks for being patient as these type of problems are new territory for me.
Ian
From first post:
I have a problem with my '93 940 turbo. This started out of the blue with no warning.
When I depress the gas, the car hesitates severely, backfires a few times and if I keep pressing the gas, will stall. If I back off the gas I can usually accelerate very slowly and once I get up to speed it is ok. When this is happening the idle goes up to 1300 instead of the normal 750.
I get codes 1-2-1 (Faulty signal to/from Air Mass Meter), 3-2-2 (Air Mass Meter wire burn-off signal absent or faulty) and 2-3-1 (Fuel trim (lambda control) too lean or too rich at part load).
I recently replaced the spark plugs, wires, ignition coil wire, distributor cap and rotor, cleaned throttle body, cleared blocked vacuum hoses and flame trap holder (turbo engine).
I have verified that no vacuum hoses are loose or leaking. The plugs are all correctly torqued and the wires are on tight. Bosch cap and rotor. Ignition coil wire on tight.
When I disconnect the AMM and restart I get the same symptoms. When I disconnect the O2 sensor I get the same symptoms. When I disconnect the Throttle Position Sensor I get the same symptoms.
I have looked over the FAQ, but no solutions are staring me back in the face.
Any ideas?
My thoughts are maybe AMM. You hear a lot of different opinions on how often AMMs go bad.
TPS? from the throttle body cleaning.
Fuel Filter. Last change not known.
If anyone is familiar with this problem I would eagerly anticipate hearing your thoughts and ideas.
Thanks a million,
Ian
|
