The computer

[alex9s]

I got a 74 2.0 engine that had been sitting in a closed garage for around 5 years with no preservatives. I completely rebuilt it and the only component that isn't new or proven good is the the computer. I started the car yesterday for the first time and the fuel pump does not turn off as it should when you just turn the key without starting it. I have read that the timimg for the fuel pump to turn off is the computer's responsibility. Does this point to a bad computer or could it be another single component???????? The only way i know to check the computer is by pulling every single wire from the computer and making sure they are good. Any other diagnostic tricks for the computer??????

[Dave at Pelican Parts]

Could be the pump relay, or possibly some of the wiring. Or the ECU.

The following article describes the fuel pump control system in detail: http://www.914fan.net/fuelpump.html
Dig through it and you should be able to find the cause of your problem.

--DD

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Pelican Parts 914 Tech Support

A few pics of my car: http://www.pelicanparts.com/gallery/Dave_Darling

[pbanders]

I have a fuel pump circuit checkout flow chart at:

http://members.rennlist.com/pbanders/FPChecklist.htm

Brad Anders