91 fuel problem, .....again
Thread Starter
Racer
Joined: Jan 2007
Posts: 399
Likes: 2
From: Vail Arizona
91 fuel problem, .....again
changed a fuel pump a month ago. car had been sitting for years and fuel pump deteriorated.
anyway. did tune up and car ran great.
now the fuel pump will not engage. it will sometimes but not alway. when it does it will run for a few minutes and put out lots of pressure. then it loses pressure.
Before I change the pump again.
Is the fuel pump what gives the fuel system pressure?
I don't think it is the pressure regulator.
Is there something that could be causing the fuel pump to be intermittent that I should check before I change it again.
on the plus side after changing the pump the first time I aint scared of it, but I don't want to change it if that isn't the problem.
Thanks for the help.
if you look at my other post today (91 wont start) you will see I was helped to get to this far.
Didn't want anyone to think i was smart and figured this out myself.
anyway. did tune up and car ran great.
now the fuel pump will not engage. it will sometimes but not alway. when it does it will run for a few minutes and put out lots of pressure. then it loses pressure.
Before I change the pump again.
Is the fuel pump what gives the fuel system pressure?
I don't think it is the pressure regulator.
Is there something that could be causing the fuel pump to be intermittent that I should check before I change it again.
on the plus side after changing the pump the first time I aint scared of it, but I don't want to change it if that isn't the problem.
Thanks for the help.
if you look at my other post today (91 wont start) you will see I was helped to get to this far.
Didn't want anyone to think i was smart and figured this out myself.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
there is a relay that powers the pump. if it's bad, your boned.
Check that.
I also highly recommend you get the Helm Factory Service manual, www.helminc.com, and use the troubleshooting guides.
Check that.
I also highly recommend you get the Helm Factory Service manual, www.helminc.com, and use the troubleshooting guides.
Thread Starter
Racer
Joined: Jan 2007
Posts: 399
Likes: 2
From: Vail Arizona
there is a relay that powers the pump. if it's bad, your boned.
Check that.
I also highly recommend you get the Helm Factory Service manual, www.helminc.com, and use the troubleshooting guides.
Check that.
I also highly recommend you get the Helm Factory Service manual, www.helminc.com, and use the troubleshooting guides.
afraid to drive it. how do you check the relay? if it is bad is there a way to change it?Bogus was right. now that it is working again (on its own) the fuel sprays out of the valve whether the car is running or not.
I have the Chiltons and the factory manual. is there a way to get the troubleshooting guides seperately.
Last edited by ChiefC; Feb 25, 2007 at 04:52 PM. Reason: more info
