HELP! Fuel pump primes when headlights are turned on...

Topic: HELP! Fuel pump primes when headlights are turned on... (Read 6530 times) previous topic - next topic

HELP! Fuel pump primes when headlights are turned on...

Reply #15 – April 24, 2010, 12:16:51 PM

Quote from: Loaded87IROC;319290

The marker lights don't come on either, except while the starter is engaged. Ed

Are marker lights also called parking lights?

Quote from: Loaded87IROC;319298

The fuel pump still primes when the lights are turned on even with the cluster removed.

Quote from: Loaded87IROC;319375

Did some more investigating. I found that the plugging the cluster caused the fuel pump to prime (with the lights on) and unplugging it made it stop.

I'm confused here. Can both of these statements be correct?

HELP! Fuel pump primes when headlights are turned on...

Reply #16 – April 24, 2010, 02:06:24 PM

Yeah, parking lights :-)

It has gone through several phases. For a while the first was true, then after some moving wires around the second was true. Now the fuel pump is working fine, but still no dash lights. Now were both confused.

HELP! Fuel pump primes when headlights are turned on...

Reply #17 – April 24, 2010, 02:14:57 PM

I just went out to the car and now it has no fuel pump or starter even with the key!

HELP! Fuel pump primes when headlights are turned on...

Reply #18 – April 24, 2010, 03:20:15 PM

Quote from: Loaded87IROC;319523

Yeah, parking lights :-)

It has gone through several phases. For a while the first was true, then after some moving wires around the second was true. Now the fuel pump is working fine, but still no dash lights. Now were both confused.

What do you mean by "moving wires around"?

HELP! Fuel pump primes when headlights are turned on...

Reply #19 – April 24, 2010, 03:34:44 PM

I just mean moving the main harness around to try to trace wires

HELP! Fuel pump primes when headlights are turned on...

Reply #20 – April 24, 2010, 03:39:39 PM

Is there a reason you have not grounded those disconnected ground wires?

You are going to have to pick just one symptom at a time and trouble shoot it. I can post EVTM diagrams that apply to the area you are trouble shooting.
Does the car have ATC or AutoLamp features? Type of transmission?

OK where do you want to start?

HELP! Fuel pump primes when headlights are turned on...

Reply #21 – April 24, 2010, 04:32:23 PM

I just grounded the unconnected grounds. As to why they went connected, I suppose i figured they werent needed. This car is completely stripped and I figured they were for some deleted options as the car was fine without it for some time. It is possible they were laying on the center console metal frame making it seem like they it was fine without them.

I have the EVTM for the car, i just need somebody who speaks EVTM more fluently than I to translate. I know enough to get by, but for trouble shooting something like this I am lost. The car does not have ATC or auto lamps. It is a C3 auto.

Ok, we are back to the pump running for a few seconds when the cluster is connected and the lights turned on. We will start there.

HELP! Fuel pump primes when headlights are turned on...

Reply #22 – April 24, 2010, 04:32:35 PM

Thanks a bunch for your help BTW.

HELP! Fuel pump primes when headlights are turned on...

Reply #23 – April 24, 2010, 04:45:17 PM

Is this with the cluster connected?
Pull fuse 18.

HELP! Fuel pump primes when headlights are turned on...

Reply #24 – April 24, 2010, 04:54:19 PM

With the cluster disconnected the lights do not turn on the fuel pump. With the cluster connected the lights do turn on the fuel pump. With the cluster connected and fuse 18 pulled the fuel pump does not come on with the lights.

HELP! Fuel pump primes when headlights are turned on...

Reply #25 – April 24, 2010, 04:58:41 PM

Disconnect the cluster and measure the resistance between pin 1 and pin 13 on the cluster.

HELP! Fuel pump primes when headlights are turned on...

Reply #26 – April 24, 2010, 05:06:16 PM

On the connector side, not the cluster right?

HELP! Fuel pump primes when headlights are turned on...

Reply #27 – April 24, 2010, 05:10:07 PM

On the connector I am reading .269 on the 2k setting.

HELP! Fuel pump primes when headlights are turned on...

Reply #28 – April 24, 2010, 05:10:41 PM

Quote from: Loaded87IROC;319546

On the connector side, not the cluster right?

NO! the cluster side.

HELP! Fuel pump primes when headlights are turned on...

Reply #29 – April 24, 2010, 05:13:56 PM

sorry, alright...

On the cluster itself pins 1 and 13 show no reading, just a 1