Join Date: May 2003
Location: Eastern North Carolina
VATS and fuel pump enable circuit?
Does a faulty passkey system (where the key resistance can no longer be read by the circuit), cause the fuel pump to operate??
This morning, I try to start my car and it cranks but doesn't fire. I also cannot hear the fuel pump whine, as is normally the case, when I turn the key. Looking at the factor service manual for my 96 RMW and a wiring diagram in the second book, it looks like the VATS system has something to do with enabling the PCM to allow operation of the fuel pump. My Pass Key light has been on (solid) for perhaps 4-5 months. Is it now not letting the FP work? As a check, the FP relay is fine, and the fuse is also fine. I WAS able to get the fuel pump to work using the underhood jumper to B+...
Any help appreciated.
'95 DGM Impala SS, 383, LT4 cnc heads, LT4 matched intake, Holley 58 mm t/body, GM 846 cam, GMPP 1.5 rr's, F-body MAF, BH OBD I PCM, LT4 knock module, K&N cold air, Edelbrock headers, Flowmaster exhaust, BBHP #73 6-speed, 4:10 gear, sloted and drilled rotors, Z28 cluster.
'96 Buick Roadmaster Limited Wagon, mostly stock.
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