TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

Fuel Pump broken...??????

Thread Tools
 
Search this Thread
 
Old May 10, 2006 | 11:58 AM
  #1  
jack_sparrow's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2004
Posts: 258
Likes: 0
From: Longmont, Colorado
Car: 1985 Camaro
Engine: 350 bored 40 over
Transmission: 700-R4 Race prepped
Fuel Pump broken...??????

Hey guys,
So let me start off by saying that I had been racing 3 weekeneds ago at Bandimere and the car started to backfire at the top end. I decided to call it quites and started to drive home, and about a mile from the track it wouldn't run anymoe cuz it was backfiring sooo bad. I limped it to a friends house about a mile away, and the next day replaced the fuel pump (in tank) and still wouldn't work. It ended up being a broken rotor at the distributor. I fixed it and it has been working perfectly after that.
Anways, last night I drove my car into the garage working PERFECTLY WITH NO PROBLEMS, and the next morning the fuel pump wont prime, and the car now wont start. It will turn over and want to start, but no fuel pump. I went through the diagnostic flow charts, and primed the pump using the ALDL Diagnostic port, and there is 36lbs. of pressure at the rails when i do that. I have an AFPR, and i can still only get it to 36 lbs. The fuel filter is new, because i replaced it with a new one when i did the pump. GUYS I DONT KNOW WHAT TO DO???? Replace the pump again or what????!!?!?!?!?

Pleaze please please help!!!!!

Brett
Reply
Old May 10, 2006 | 05:46 PM
  #2  
joejoe's Avatar
Member
iTrader: (1)
 
Joined: Jul 2005
Posts: 275
Likes: 0
From: edge of the map
Car: red one
Engine: on the floor
Transmission: next to engine
Axle/Gears: the ones that turn
as for no prime; try the fuel pump relay.

I think the runing psi might be lower than primeing psi?

good luck,
joe
Reply
Old May 11, 2006 | 02:42 PM
  #3  
jack_sparrow's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2004
Posts: 258
Likes: 0
From: Longmont, Colorado
Car: 1985 Camaro
Engine: 350 bored 40 over
Transmission: 700-R4 Race prepped
So besides buying a new relay, how do i check it?
Know what i mean, any help is appreicated...!

Brett
Reply
Old May 11, 2006 | 03:10 PM
  #4  
joejoe's Avatar
Member
iTrader: (1)
 
Joined: Jul 2005
Posts: 275
Likes: 0
From: edge of the map
Car: red one
Engine: on the floor
Transmission: next to engine
Axle/Gears: the ones that turn
put 12v to the 'G' term. of the ALDL, if the pump is good, it will come on.
Reply
Old May 11, 2006 | 06:37 PM
  #5  
jack_sparrow's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2004
Posts: 258
Likes: 0
From: Longmont, Colorado
Car: 1985 Camaro
Engine: 350 bored 40 over
Transmission: 700-R4 Race prepped
I did , and the pump comes on, so does this mean that the relay is bad, or what else could be the culprit?????

Brett
Reply
Old May 12, 2006 | 11:16 AM
  #6  
jack_sparrow's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Jul 2004
Posts: 258
Likes: 0
From: Longmont, Colorado
Car: 1985 Camaro
Engine: 350 bored 40 over
Transmission: 700-R4 Race prepped
Well i finally solved the problem. BTW thanks for all the help and input. It seems that there was a fuse blown that wouldn't let the relay kick on, but eveything else, such as lights and guages etc etc. even the motor would turn over, but i found it and replaced it, after looking through some more flow charts.

Brett
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Glowsock
Tech / General Engine
13
Jul 24, 2025 03:15 PM
92camaroJoe
TBI
32
Jul 29, 2023 07:57 PM
RazorN8
Tech / General Engine
4
Jan 7, 2022 11:44 AM
beachrodder
Tech / General Engine
7
Aug 25, 2015 08:05 AM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM




All times are GMT -5. The time now is 11:04 AM.