Possibly the fuel pump is drawing down the voltage.
Look at the schematic and you can see the WUR, AAR and Vac switch are all coming from terminal 30 of the fuel pump, sharing the voltage to the fuel pump.
Connection T1d (single flat) at the front fuse panel could be poor, connection at 14 pin connector could be corroded as well. Also confirm the supply and ground on the fuel pump are good. Added resistance will drop the voltage.
Cleaning the fuse terminals for the FP relay would be a good thing as well.
__________________
Dennis
Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C
Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds.
Last edited by timmy2; 08-16-2021 at 03:28 PM..
|