Electrical problem Fuel Pump (solved)
05-30-2015, 05:07 PM
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Electrical problem Fuel Pump (solved)
Nothing to see here folks! Already solved. Turned out the M6 nut on the battery positive terminal clamp was loose. One of those small red wires runs directly to relay XXV (LH injection) and XX (fuel pump).
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A little background.
Last year the car acted funny when starting: during cranking it would almost stop then crank again and start normally. This happened a few times and finally the starter motor made a screeching sound and no start.
Car has been standing since and finally got around to fixing it. So I didn't listen to Alan to first check the battery and replaced the starter motor with an IMI starter. Since the car stood for a long time I wanted to circulate the fuel. So I removed the ignition and fuel relays and jumped the fuel pump (relay XX, bridge terminals 30 and 87). I hear the fuel pump run. Install all relays again and turn the key. The the engine still cranks slowly, no start. Get a new battery, still slow cranking and no start
Jump the battery with with my DD and finally it starts! Yay!
So I let it run for a few minutes, it runs fine and smooth as always, then take it for a drive around the block. Half way around the block the engine cuts out for a second then runs normally again. When the engine cut out I heard an electrical frizzle from the CE panel (like a relay buzzing) and the ABS warning light came on.
So I continue around the block and as I enter my street the engine cuts out completely. Now it won't start. The engine cranks over plenty strong, much stronger then before, but no start. I jumped the fuel pump relay again and now I don't hear the fuel pump running. I get 1 Volt on terminal 30 and 0 Volt on terminal 87.
Don't know where to go from here. Any (electrical) pointers?
--------------------------------------------------------
A little background.
Last year the car acted funny when starting: during cranking it would almost stop then crank again and start normally. This happened a few times and finally the starter motor made a screeching sound and no start.
Car has been standing since and finally got around to fixing it. So I didn't listen to Alan to first check the battery and replaced the starter motor with an IMI starter. Since the car stood for a long time I wanted to circulate the fuel. So I removed the ignition and fuel relays and jumped the fuel pump (relay XX, bridge terminals 30 and 87). I hear the fuel pump run. Install all relays again and turn the key. The the engine still cranks slowly, no start. Get a new battery, still slow cranking and no start
Jump the battery with with my DD and finally it starts! Yay!So I let it run for a few minutes, it runs fine and smooth as always, then take it for a drive around the block. Half way around the block the engine cuts out for a second then runs normally again. When the engine cut out I heard an electrical frizzle from the CE panel (like a relay buzzing) and the ABS warning light came on.
So I continue around the block and as I enter my street the engine cuts out completely. Now it won't start. The engine cranks over plenty strong, much stronger then before, but no start. I jumped the fuel pump relay again and now I don't hear the fuel pump running. I get 1 Volt on terminal 30 and 0 Volt on terminal 87.
Don't know where to go from here. Any (electrical) pointers?
