'86 GL CALIFORNIA CARBED originally.

 

Car quit, and I immediately suspected the fuel pump cause it starts, runs for a few seconds, then putters out. The pump's been whining sporadically for some time now, so I'm prepared to throw in a FI oem one, but may have another issue here. I pulled the old pump, and it does seemingly run ok when hooked up directly to a battery. DMM only reads 7.5V at the pump, not running. Now I know this may be normal, with the long run, and going through fuses and a relay, but before I drive another 60 miles to install the pump in the snow.....I'd like to know more about the relay. The engine is an EJ, but that shouldn't be relevant, because I could never find the original relay to tie in the EJ's. Heck, I don't even know what to look for.....it's likely completely different, and in a different location than the norm. So any help would be greatly appreciated with the following:

 

1) Is 7.5V normal at the pump with the engine off?

2) Pump or relay bad with above info?

3) Pics or description of a cali relay

4) Location of said relay

 

BI-MART and myself would very much like to get my ugly rig outta there. With this info, I can properly run the pump from the ECU, and not end up in a huge fireball one day if I wreck it!

 

Thanks,

~Eric

I believe the 85-86 had a fuel pump controller that turned it on when the tach wire sensed revolutions. just a note.

 

it should show 0 volts when off as far as i know. when on, it should show 12-14 when on and running. there won't be a very big volt drop from battery to pump because the pump is the load. I would do a rewire on the one you have. that's just me

Edited April 7, 201114 yr by Ricearu

I believe the 85-86 had a fuel pump controller that turned it on when the tach wire sensed revolutions. just a note.

 

No - the CA feedback carbed models had a real live relay that was controlled by the ECU like an EJ engine. If you disconnect the ECU the fuel pump will not run.

 

GD

Ah yeah....I knew this would be a challenging prob. Due to the cond of the old pump, I'll just replace it and go from there.

Thanks anyway,

~E

No - the CA feedback carbed models had a real live relay that was controlled by the ECU like an EJ engine. If you disconnect the ECU the fuel pump will not run.

 

GD

 

I HATE cali laws and regs. I would love to visit, hate to stay...

Thank God for the midwest!!! no Emissions ! WEEEEEEE!

Luckily it was only the pump........I see a tedious job of wire-routing in my future! :-\