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87 244 rough running at start 200 1987

posted by  Dave Stevens on  Mon Apr 24 00:27 CST 2023
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last visit: Sun Jan 1 02:36 CST 2012
[RELATED]

I'm not sure how many realize how easy it is to force the fuel pumps to run on a 240 as you've shown with a jumper wire, bypassing a possibly troublesome relay or simply just forcing them to run as in your suggestion. Don't have to get yourself dirty, barely needing to open the door. I was very impressed when an AAA(CAA) tow truck driver once said he packed around paper clips just for such purposes, to get a stranded 240 owner going again and home under their own power. (I'd have to double check this as my diagrams aren't handy, if you go hot bottom left to main fuel pump upper left, a paper clip can be firmly affixed into the tab holes to run the main pump with the fuses removed, albeit no longer with fused protection or the in-tank pump, remove it immediately once the engine is off). A later tow truck driver similarly impressed me, saying he knew to try pulling the AMM connector and force limp home mode so people could get home with a bad AMM. Note to earlier K-Jet 240 and 140 injection system owners, it's fuses 5 and 7 that get jumpered rather than 4 and 6 here with the later LH Jetronic. Check the labelling on the fuse panel cover to be reminded of the main fuel pump fuse.
--
Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now






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