90 740GL fuel pump

  • Thread starter Thread starter Charles Marshall
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Charles Marshall

My girlfriends 90 740GL has developed an intermitent problem with the fuel
pump not coming on. It has the Regina fuel system with a single in tank
pump. The symptoms are fuel starvation when trying to start it, warm or
cold makes no difference. Thing is, tapping on the sending unit when
starting cures the problem and the car will start and continue to run
without problems. Turn it back off and the next time it may start, or may
not. If not, tapping on the sending unit once again solves it. I'm almost
certain I'm going to have to replace the pump, but was hoping maybe there is
something else I could be missing. Is there anything on the sending unit
that could have a bad connection that could be fixed, or does it just about
have to be a problem within the pump itself?
 
Charles said:
My girlfriends 90 740GL has developed an intermitent problem with the fuel
pump not coming on. It has the Regina fuel system with a single in tank
pump. The symptoms are fuel starvation when trying to start it, warm or
cold makes no difference. Thing is, tapping on the sending unit when
starting cures the problem and the car will start and continue to run
without problems. Turn it back off and the next time it may start, or may
not. If not, tapping on the sending unit once again solves it. I'm almost
certain I'm going to have to replace the pump, but was hoping maybe there is
something else I could be missing. Is there anything on the sending unit
that could have a bad connection that could be fixed, or does it just about
have to be a problem within the pump itself?
Click to expand...

There could be a connection problem where the wires go through the top
of the sender. However if it's not obvious then it's probably best not
to try to fix it as any error will cause a fuel leak.

--
Mike F.
Thornhill (near Toronto), Ont.

NOTE: new address!!
Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
 
What are you calling the sending unit. If you mean the fuel pump relay
behind the fuse panle, replace it. It is a known problem.
 
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