can you drive with a bad fuel pump module

The fuel pump will be ‘on’ any time the key is on.Īnyways, I plan on keeping my jumpers in the glove box. Jumping those connections will turn on the fuel pump allowing you to start the engine. 1 and 5 get jumped together and 4 and 8 get jumped together. If your colours vary, it is the 4 large wire gauge pins numbers 1,4,5,8. YEL/GRY and VIO/GRN - this is the power circuit WHT/TAN and BLK/GRN - this is the ground circuit

The wires you want to connect together are: Perhaps it is just an on/off switch as the module is powered at all times when key on. Also I’m not entirely sure what relation the pcm has to this module but they are connected. I do not recommend keeping it permanently bypassed as in a collision the restraints module can actually turn off the fuel pump. The wires that go to the PCM, one is a duty cycle signal that tell the PCM how the module is working, the other one I guess is a signal coming from the PCM that tells the module how to operate the pump, which kind of signal is this, is it a PWM or an analog signal referred to the ground?Īnd which is which (WHT/YEL from pin 6 and LT BLU/ORG from pin 1).FC868649-D2DD-4F8A-B0D5-500DDB6B8A0F.jpeg (1.58 MiB) Viewed 26326 times The only doubt is that mine doesn't seem to be damaged, looking from the outside, no rust or holes, nothing, but there is no negative signal from the module to the pump. So I'm gonna order the part and wait (I'm in Italy.) Towed it back to the mech and it turned out that the FPDM seem to be bad, if I bypass it coonnecting directly the power to the pump, it start with no problem (even if P1233 is still there).

Picked up the car last friday, leaving a check of 1250 Euros (about US$ 1670 -800+ only for the pump!!!).Īfter about 25 miles during which I stopped about 3 times, the 4th times it didn't restart. Same boat here, changed fuel pump first, 'cause the mech said it was getting power but didn't turn, fuel filter was also in bad conditiond, this maybe causing the pump to go bad.

Can you drive with a bad fuel pump module