V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

91 3.1 5 speed.

Thread Tools
 
Search this Thread
 
Old 12-18-2014, 07:09 PM
  #1  
Junior Member
Thread Starter
 
Pearcy91CAMARO's Avatar
 
Join Date: Nov 2014
Location: Hot springs arkansas
Posts: 20
Likes: 0
Received 0 Likes on 0 Posts
Car: 91 camaro rs
Engine: 3.1
Transmission: 5 speed
91 3.1 5 speed.

I've been working on my car for 3 weeks now. New parts include plug wires plugs cap and rotor. New computer new coil new fuel pump new injectors new fuel fikter. Had the car idling perfect but driving bad, I backed it in and went back to start it but nothing. Won't even pop. Fuel pump comes on and it has spark. Will fire up with starting fliud... Is there any chance that the icm is bad? Or something to do with the comouter? The vats is okay nothing wrong other. Please help I dont wanna see this car just sit and rot, thanks
Old 12-18-2014, 07:16 PM
  #2  
Supreme Member
iTrader: (-3)
 
1991sleeper's Avatar
 
Join Date: Dec 2012
Posts: 1,184
Likes: 0
Received 1 Like on 1 Post
Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Try icm or pickup coil in bottom of dizzy ... if a 3.1 even has a dizzy ? Lol
Old 12-19-2014, 07:14 AM
  #3  
Moderator

iTrader: (1)
 
RBob's Avatar
 
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 18,405
Likes: 0
Received 216 Likes on 202 Posts
Car: check
Engine: check
Transmission: check
Re: 91 3.1 5 speed.

Excuse my dumb post: {If the stock OEM injectors are still in the engine, replace them.}

I thought your name looked familiar, already have new(er) injectors. Since starting fluid sprayed into the intake will fire the engine. It has to be fueling.

VATs will do that, it stops the injectors from firing. A bad ICM can also do this, as the ECM doesn't see reference pulses from the distributor.

RBob.

Last edited by RBob; 12-19-2014 at 04:14 PM.
Old 12-19-2014, 10:20 PM
  #4  
Senior Member

iTrader: (8)
 
antares57's Avatar
 
Join Date: Aug 2011
Location: Texas
Posts: 661
Likes: 0
Received 7 Likes on 7 Posts
Car: 91 Firebird/88 Firebird/91 Formula
Engine: V6 3.1/V8 5.0/V8 5.0
Transmission: 4L60/700R4/4L60
Axle/Gears: 3.23/2.73/2.73
Re: 91 3.1 5 speed.

Did you check or replace the Fuel Pressure Regulator (FPR). Didn't see it mentioned. Will cause symptoms like yours. Good Luck.
Old 12-23-2014, 09:01 PM
  #5  
Junior Member
Thread Starter
 
Pearcy91CAMARO's Avatar
 
Join Date: Nov 2014
Location: Hot springs arkansas
Posts: 20
Likes: 0
Received 0 Likes on 0 Posts
Car: 91 camaro rs
Engine: 3.1
Transmission: 5 speed
Re: 91 3.1 5 speed.

Runs perfect now, new distributor new fuel system new computer. No idea what it was but leaning to ICM
Old 12-29-2014, 11:06 AM
  #6  
Member
 
Stewie's Avatar
 
Join Date: May 2012
Location: Richmond, VA
Posts: 251
Likes: 0
Received 0 Likes on 0 Posts
Car: 1992 Firebird
Engine: 3.1L
Transmission: Manual T5
Axle/Gears: Stock
Re: 91 3.1 5 speed.

If you replaced the ICM when you installed the new dizzy, it probably was the ICM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
db057
TBI
3
01-10-2020 08:55 PM
Elephantismo
Electronics
14
02-13-2019 12:51 AM
racereese
Tech / General Engine
14
10-03-2015 03:46 PM
cking99
Tech / General Engine
3
09-22-2015 11:33 AM



Quick Reply: 91 3.1 5 speed.



All times are GMT -5. The time now is 12:57 PM.