So I took a working m20 and manual trans. from a wrecked 87 325i vert, and dropped it all into my 89 325i 4dr (was formerly an auto). The engine in the 89 had seized after my daughter ran it with no oil.. she said it was making grinding metal noises for a while and then it stopped (engine was totally locked).
Last year, I did a similar swap of manual engine/tranny from one 90 into another 90 (that was formerly an auto), and miraculously, it started on the first try of turning the key.
I figured out the wiring around the shifter (again) I believe, because the starter will turn the engine over, but engine will not fire at all.
I could not hear the fuel pump doing anything, so I checked to see if any fuel was flowing at the line near the regulator, and there is definitely no flow. Of course, the fuel pump was working fine before the old engine seized, so I have no reason to think there is a problem there. I have not checked for spark yet, but my first guess is that the brain/computer is not communicating with engine correctly.
Are there any problems/differences that might affect use of 87 engine with 89 chassis/brain/ECU?
If this is not the issue, any suggested list of troubleshooting would be greatly appreciated. The car is in a dark, cold warehouse about 40 miles away, and I don't want to make too many trips up there and back to try and figure this out. Fyi, even though I did swap an engine/tranny last year, that was far and away my greatest accomplishment; my mechanical experience/skills are very limited, especially regarding electrical stuff, so please don't assume I understand anything at all!
Much thanks for any advice on how to proceed efficiently.
Last year, I did a similar swap of manual engine/tranny from one 90 into another 90 (that was formerly an auto), and miraculously, it started on the first try of turning the key.
I figured out the wiring around the shifter (again) I believe, because the starter will turn the engine over, but engine will not fire at all.
I could not hear the fuel pump doing anything, so I checked to see if any fuel was flowing at the line near the regulator, and there is definitely no flow. Of course, the fuel pump was working fine before the old engine seized, so I have no reason to think there is a problem there. I have not checked for spark yet, but my first guess is that the brain/computer is not communicating with engine correctly.
Are there any problems/differences that might affect use of 87 engine with 89 chassis/brain/ECU?
If this is not the issue, any suggested list of troubleshooting would be greatly appreciated. The car is in a dark, cold warehouse about 40 miles away, and I don't want to make too many trips up there and back to try and figure this out. Fyi, even though I did swap an engine/tranny last year, that was far and away my greatest accomplishment; my mechanical experience/skills are very limited, especially regarding electrical stuff, so please don't assume I understand anything at all!
Much thanks for any advice on how to proceed efficiently.
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