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Hot fuel pump relay
Well I have been having stalling problems on an 89 300se and I think I have narrowed it down to the fuel pump relay. I removed one of the fuel injectors to have a look at the spray pattern. I cranked the engine and there was a 15second delay before the fuel started to come out of the fuel injector.
I went to remove the fuel pump relay and it was very warm to the touch. Does this most likely mean that I have a bad fuel pump relay? The car will not run at all anymore. If I crank the car long enough, it backfires, which worries me greatly. Any help is greatly appreciated!!!
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George Carstens Last edited by Maddog; 08-01-2003 at 11:19 PM. |
#2
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Sounds like the relay. You can jump terminals 30 and 87 and the pump will run. If the car starts then relay is bad.
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Mick J '08 Chrysler 300CRD (MB OM 642 engine) '95 E220 estate '89 230TE (R.I.P.) |
#3
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Had a very similar probelm on my w201. The fuel pump relay started overheating after I washed the car and some moisture got inside it. It caused the car to shut down in the middle of the road for a few minutes until the fuel pump relay cooled down, then it would restert and go a bit more until it overheated again. Very annoying.
replaced the fuel pump relay and the problem never came back. xp
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1985 190E 2.3L - a constant project. |
#4
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Don't overlook the filter ..
A clogged filter will cause the pump to draw higher than normal amps, resulting in a heated relay .. If the pump does run, an amps draw test would be the next step..This can be done at the jumper MJ mentions... |
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