Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by:
Sponsored by: CARiD

HELP! 1987 iroc Camaro fuel injectors not pulsing

Thread Tools
 
Search this Thread
 
Old Feb 2, 2022 | 12:13 AM
  #1  
RandyFlip23's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2022
Posts: 8
Likes: 0
HELP! 1987 iroc Camaro fuel injectors not pulsing

Ok so here go.. I have a 1987 Camaro iroc-z (non vats car) the car sat for a few years when I got it she had no power at all to anything.. I cleaned all the connections and grounds under the hood and also fixed the fusible link at the starter and restored all power back.. found out the fuel pump was shot so I replaced it and drained all the bad gas and put fresh gas in (now works).. I also replaced the distributor cap/rotor/ignition control module.. as of now it’s cranking and getting spark but not gas. I pulled the fuel rail and bench tested the fuel injectors and they all spray none leak (one sprays on the weak side) but none the less the harness should still send a pulse right? I put the fuel rail back in with injectors attached but didn’t seat the injectors to visibly see if they’re spraying and nothing.. kinda stumped here can anyone shed some light please
Reply
Old Feb 2, 2022 | 10:19 AM
  #2  
BIRD91ZRAG's Avatar
Member
iTrader: (1)
 
Joined: Sep 2003
Posts: 356
Likes: 76
From: Ft Wayne In
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

The ECM needs to get a signal from the distributor that the engine is cranking before it will pulse the injectors. Do you have a service manual?
Reply
Old Feb 2, 2022 | 10:24 AM
  #3  
RandyFlip23's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2022
Posts: 8
Likes: 0
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

Originally Posted by BIRD91ZRAG
The ECM needs to get a signal from the distributor that the engine is cranking before it will pulse the injectors. Do you have a service manual?
Thank you for the reply! I think the ecm might just be the issue here as the engine light is not coming in when I turn the key also.. I’m picking up a Haynes manual today.
Reply
Old Feb 2, 2022 | 10:55 AM
  #4  
Tuned Performance's Avatar
Sponsor
20 Year Member
Community Builder
Community Influencer
Community Favorite
iTrader: (95)
 
Joined: Dec 2004
Posts: 16,925
Likes: 1,016
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

Look at the fuse next to the battery
Reply
Old Feb 2, 2022 | 11:25 AM
  #5  
RandyFlip23's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2022
Posts: 8
Likes: 0
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

Originally Posted by Tuned Performance
Look at the fuse next to the battery

it’s good also the fusible link at the starter is good
Reply
Old Feb 6, 2022 | 07:44 PM
  #6  
Bobby Suth's Avatar
Senior Member
15 Year Member
iTrader: (2)
 
Joined: Mar 2010
Posts: 989
Likes: 9
From: tn.
Car: 1990 firebird,1989 Iroc z,1986 fire
Engine: 3.1lt,5.7tpi,3.1mpfi
Transmission: auto,auto
Axle/Gears: 273?277
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

Will it turn over with the key? My 88 formula ran last year and I have it painted now and won't turn over with the key. I have installed a remote trigger switch and runs on starting fluid. Has fuel pressure. No injector pulse. Fuse are good. The fuse buy the battery goes where? I have a 85 Camaro service manual. How close is that when trouble shooting
Reply
Old Feb 8, 2022 | 11:58 AM
  #7  
ploegi's Avatar
Supreme Member
25 Year Member
 
Joined: Jul 1999
Posts: 1,556
Likes: 28
From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

Skip the haynes manual. Get a real factory service manual for the car. They ain't inexpensive, but, it is for your car specifically, from the manufacturer. FAR superior to any haynes/chilton/whathaveyou.
Reply
Old Aug 9, 2024 | 10:42 PM
  #8  
metalcatz's Avatar
Junior Member
 
Joined: Aug 2024
Posts: 1
Likes: 0
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

What was the end result?

Reply
Old Aug 9, 2024 | 10:52 PM
  #9  
Tuned Performance's Avatar
Sponsor
20 Year Member
Community Builder
Community Influencer
Community Favorite
iTrader: (95)
 
Joined: Dec 2004
Posts: 16,925
Likes: 1,016
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

Crickets
Reply
Old Aug 12, 2024 | 12:43 PM
  #10  
AlkyIROC's Avatar
Moderator
25 Year Member
Liked
 
Joined: Jul 1999
Posts: 17,274
Likes: 171
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: HELP! 1987 iroc Camaro fuel injectors not pulsing

Well the original post was 2 years ago from a user who has posted very few times since then.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rodr
Tech / General Engine
4
Jun 4, 2014 08:35 AM
RebelGQ
TPI
3
May 3, 2006 12:40 AM
8T8IROC
Southern California Area
35
Jun 22, 2005 11:12 AM
JOHN/88IROCZ
Tech / General Engine
4
Feb 4, 2004 11:38 PM
camaro89rs355
TBI
1
Mar 29, 2003 06:56 PM




All times are GMT -5. The time now is 04:48 AM.