1979-1993 & 94 Conv [Subscribe to Daily Digest] |
Wondering if anyone's run into this before.
1989 900 (base model, no turbo). Engine light came on while driving on parkway, engine started cutting out and then died altogether. Felt like fuel starvation, and I'm guessing the pump's bad, and I'm trying to run some diagnostics, but I'm stymied by the computer.
Instead of flashing and going out, like it's supposed to with the diagnostic switch attached, it just stayed on solid. Pulled computer and replaced it with a spare (which I'm pretty sure I've tested before), and I saw the same problem. I've tested/retested the switch and wires, and they seem okay.
This happened yesterday. I called for tow, put the car back together while I was waiting, with the original computer. Retested today, and the diagnostic switch worked! Once. It only showed one error code (the useless code, 12231) and then, after I cranked the engine and it ran briefly (sounds like fuel starvation again), it reverted to the solid-light-on, won't respond-to-switch mode. I tried disconnecting the battery for several minutes, but that didn't change anything.
I'm going through the wiring diagrams and I don't see what could be involved in causing this. The fact I saw it with two different computers is pointing to something other than the computer, but I can't imagine what. Any clues?
Meanwhile, tried starting a few more times. Will only run for a couple seconds, so I'm leaning towards just replacing the main pump (did the auxiliary about 2 years ago). Tried the jumper-the-pump-relay trick and couldn't hear anything running, but the car is parked in a very noisy place with lots of traffic.
Any advice would be appreciated. Thanks!
posted by 50.14.118...
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