DFI and ECM Discuss all aspects of DFI (Digital Fuel Injection), ECMs (Electronic Control Module), scanners, and diagnostic equipment. Fine tune your Third Gen computer system for top performance.

still no start

Thread Tools
 
Search this Thread
 
Old May 13, 2011 | 11:17 PM
  #1  
bulon12's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2010
Posts: 6
Likes: 0
still no start

Camaro 1990 3.1 no start. Changed ECM, kept old PROM. temp sensor, knock sensor , ignition module, spark plugs, fuel filter, checked fuel pressure good, spark good. timing ok. Checked vaccum hoses and replaced the ones questionable. Car sounds like only one cylinder is firing when I crank it. Looked at plugs and found all but #6 rich burn #6 normal. Can a bad PROM (MEMCAL) cause this?
Reply
Old May 14, 2011 | 08:14 AM
  #2  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: still no start

If the stock injectors or even stock replacement (rebuilt) injectors are in the engine, they are bad. With the Multec injectors the coils short out preventing them from firing properly.

Can see Southbay Injectors for a set of Bosch replacements.

RBob.
Reply
Old May 14, 2011 | 03:43 PM
  #3  
Saar's Avatar
Senior Member
 
Joined: Nov 2006
Posts: 672
Likes: 1
From: Camden, MI
Car: 1985 IROC-Z28
Engine: LB9
Transmission: 700R4
Axle/Gears: 3.73
Re: still no start

assuming that the iron head 3.1 has the same injectors as the aluminum head 3.1, then you're looking at 16.7 lb/hr stock injectors.
Reply
Old May 14, 2011 | 08:14 PM
  #4  
bulon12's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2010
Posts: 6
Likes: 0
Re: still no start

Injectors are good, checked with node light.fuel press is good too. I will install new PROM and will post.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Orr89RocZ
Power Adders
206
Apr 25, 2016 08:28 AM
Wade787b
TPI
2
Sep 29, 2015 01:15 PM
SolarGoldRaptor
Carburetors
16
Aug 25, 2015 02:25 PM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM
86Base
TPI
14
Aug 8, 2015 01:34 PM




All times are GMT -5. The time now is 04:59 PM.