Can any one explain this one? (FIXED! Fuel Pump) - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Can any one explain this one? (FIXED! Fuel Pump)

Reply

 
 
 
Old 06-15-2007, 10:31 PM
  #1  
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Mar 2004
Location: grand rapids MI.
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
bigdawg56 is on a distinguished road
Default Can any one explain this one? (FIXED! Fuel Pump)

I drove my car about a 100 round trip. when i got off the express way it started surging and cut off. if i started it back up it would go until i had to slow down again then same thing. fuel pressure was reading 38psi but when you gave it gas it would drop to about five psi and shut down. let the car sit over night started did a pressure check without vacuum applied to fpr. It read about 52 psi plug the vacuum line back up i was between 39 and 43 psi but would go to about 50 psi if you hit the throttle.. could this be a bad pump that is only showing up when it gets hot or ign module? any help would be appreciated. thanks
bigdawg56 is offline  
Reply With Quote
Old 06-16-2007, 02:04 AM
  #2  
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

If the pressure drops that low, I'd suspect the fuel pump. The SSEis have a 2 speed pump, and perhaps the slower speed is not working as well after running for a while. Have you changed the fuel filter?
Archon is offline  
Reply With Quote
Old 06-16-2007, 11:11 AM
  #3  
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Mar 2004
Location: grand rapids MI.
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
bigdawg56 is on a distinguished road
Default

forgot to mention this is a walbro fp that is about 2 years old
bigdawg56 is offline  
Reply With Quote
Old 06-16-2007, 11:13 AM
  #4  
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Mar 2004
Location: grand rapids MI.
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
bigdawg56 is on a distinguished road
Default

changing fuel filter now will try to drive it hard and see what turns up once it heats up
bigdawg56 is offline  
Reply With Quote
Old 06-17-2007, 10:35 AM
  #5  
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Mar 2004
Location: grand rapids MI.
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
bigdawg56 is on a distinguished road
Default

ok changed the filter. drove pretty hard it seem to work fine at first but at about 115mph it started to surge no power then pick up as if it was starving for fuel think im going to have to change the pump.
bigdawg56 is offline  
Reply With Quote
Old 07-05-2007, 11:10 AM
  #6  
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Mar 2004
Location: grand rapids MI.
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
bigdawg56 is on a distinguished road
Default

replaced the pump. Seems to have solved all my problems.
bigdawg56 is offline  
Reply With Quote
Old 07-05-2007, 12:13 PM
  #7  
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

Great. Glad that you got it fixed...thanks for reporting back.
Archon is offline  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
gollum244
Everything Electrical & Electronic
3
01-20-2010 08:27 AM
ddalder
Lounge
10
08-29-2007 07:48 AM
ssesc93
General GM Chat
10
10-14-2004 11:31 AM
randman1
Lounge
13
06-12-2004 01:46 AM
94Regal
Lounge
39
12-22-2003 10:10 AM


Thread Tools
Search this Thread
Quick Reply: Can any one explain this one? (FIXED! Fuel Pump)


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.