I have posted this message on the board before, but I have some new information that may be able to assist people in helping me. My 240 DL has a tendency to stall. The car starts up with no problem and off we go, however once driving for a while, it will begin to miss and eventually if I do not keep my foot on the accelerator and the brake it will stall. Once I try and re-start the car, I have to give it gas to start up again. Now what I have noticed is that it is considerably worse when wet outside and when turning corners, it appears to hesitate more as if it is fuel starved. What gives? At first I thought it was the AMM going south, but it seems as if it is somewhere in the fuel system. The FPR perhaps? Any suggestions would be a big help!!

New parts placed on car:

Water Pump
Fuel Filter
New Belts
Radiator
New exhaust
Master Cylinder
New pre-heat hose

Geo Just changed the AMM on my '91,I had followed the "normal" parts change routine,O2 sensor, engine temp to ECU sensor,RPM sensor and the FPR. Some of these items helped the engine run better,Temp sensor got rid of the "pinging",RPM sensor made it run smoother but in the end it was the AMM. If I had believed the "codes" I was getting, "compensating for rich or lean mixture at idle" and "conpensating for rich or lean mixture at cruise" I would have changed the AMM after the O2 sensor. FCP Groton will fix you up with one for $205 plus $6.00 shipping, I ordered mine on Monday and got it Wednesday, I'm in Indy so should be about the same for you in Ohio. Hope this helps. Dennis

No check engine light? If there is, and the code is 2-3-2 (ECU compensating for rich or lean mixture) it is the FPR or AMM, I bet. I think the guys are right, the 016 AMM seems to fail by progressive stages unlike the earlier AMMs that just crap out at once.

Same exact thing for my car - 92 240. It was the AMM. Used for 60us. New is about 210. Plug a used unit in and see if it changes for the better.
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92 244 lowered, Bilsteins, IPD sways, Unitek cam/header, TSW Revo 18x8's - 94 965 Niiice MONEY PIT! - 76 Datsun 280Z lowered, modified head, cam, headers, intake

It sounds like the same thing that happened to my car before the AMM finally quit altogether. Dan