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

92 3.1 RS wont start

Thread Tools
 
Search this Thread
 
Old Sep 22, 2011 | 04:38 PM
  #1  
Zimmerser's Avatar
Thread Starter
Junior Member
 
Joined: Jan 2004
Posts: 39
Likes: 0
92 3.1 RS wont start

I am going crazy trying to figure out why my car wont start.

First the fuel pump was bad so I replaced it. Now I have fuel to the engine within specs. Then I checked the plugs, wires, icm, dist cap, rotor, ignition coil, and pick-up coil. The only thing that was bad was the pick-up coil. Injectors ohm correctly (12.3-12.6), and proper voltage to each. Battery is ok, alt is ok, starter is ok. Checked the timing and its 10* BDTC on 1.

The engine turns, but it won't start. I do not see the check engine lights on. I do notice the oil pressure gauge and the temp gauge going from 0 all the way to the right when trying to turn it over.

The next thing I am going to try is a compression test, but I do not think it is necessary since the car ran fine before I parked it 2 years ago.

What am I missing??
Reply
Old Sep 22, 2011 | 04:42 PM
  #2  
88transam 88's Avatar
Junior Member
 
Joined: Sep 2011
Posts: 93
Likes: 0
From: abq nm
Car: 1988 TransAm
Engine: sbc 9:8:1 cr 40os slugs rhs heads
Transmission: th400 3800stall b&mkit manual vb
Axle/Gears: stock
Re: 92 3.1 RS wont start

did you make sure to see if it had spark
Reply
Old Sep 22, 2011 | 04:55 PM
  #3  
Base91's Avatar
Supreme Member
iTrader: (1)
 
Joined: Sep 2010
Posts: 1,928
Likes: 1
From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 92 3.1 RS wont start

Just because the injectors pass the ohm test doesn't mean they're not clogged. If the car sat for 2 years it's a possibility. But you need a spark and you could try starting with starting fluid sprayed in the intake while someone cranks it. That'll give you a clue to the spark/fuel situation.
Reply
Old Sep 22, 2011 | 05:07 PM
  #4  
Zimmerser's Avatar
Thread Starter
Junior Member
 
Joined: Jan 2004
Posts: 39
Likes: 0
Re: 92 3.1 RS wont start

Yes, I have a spark tester and all plugs have good spark. I sprayed some carb cleaner in the intake (it was all i had on hand) and nothing happened.
Reply
Old Sep 22, 2011 | 05:10 PM
  #5  
88transam 88's Avatar
Junior Member
 
Joined: Sep 2011
Posts: 93
Likes: 0
From: abq nm
Car: 1988 TransAm
Engine: sbc 9:8:1 cr 40os slugs rhs heads
Transmission: th400 3800stall b&mkit manual vb
Axle/Gears: stock
Re: 92 3.1 RS wont start

there is some thing causeing it not to fire over tho remeber air fuel spark is all thats needed for a engine to run
Reply
Old Sep 22, 2011 | 06:18 PM
  #6  
Zimmerser's Avatar
Thread Starter
Junior Member
 
Joined: Jan 2004
Posts: 39
Likes: 0
Re: 92 3.1 RS wont start

Originally Posted by 88transam 88
there is some thing causeing it not to fire over tho remeber air fuel spark is all thats needed for a engine to run
I know, but I can't figure it out and it is killing me. I think I'm going to take the upper off tomorrow and see if the injectors are clogged. I have nothing else...
Reply
Old Sep 22, 2011 | 06:23 PM
  #7  
HalfInchWrench's Avatar
Supreme Member
 
Joined: Feb 2005
Posts: 1,054
Likes: 1
From: Ajax, ON
Car: 85Z28 87GTA 91GTA 98SS
Engine: SBC, LS-x
Transmission: T-5, 700-R4, T-56
Re: 92 3.1 RS wont start

Try a little bit of gas thru the TB. You need 3 things, spark, fuel and air. Sounds like you have spark and air. If it runs for a second or two with a bit of gas then its time to track down why it's not delivering fuel. If thats the case then the first thing I would check is fuel pressure.
Reply
Old Sep 22, 2011 | 09:39 PM
  #8  
Base91's Avatar
Supreme Member
iTrader: (1)
 
Joined: Sep 2010
Posts: 1,928
Likes: 1
From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 92 3.1 RS wont start

Originally Posted by Zimmerser
Yes, I have a spark tester and all plugs have good spark. I sprayed some carb cleaner in the intake (it was all i had on hand) and nothing happened.
Get someone else to crank the engine and spray starting fluid right into the TB. It takes a fair amount. If you get no fire then you aren't getting a spark. At least not at the right time. You may want to try this before you pull the injectors.
Reply
Old Sep 24, 2011 | 07:23 PM
  #9  
Zimmerser's Avatar
Thread Starter
Junior Member
 
Joined: Jan 2004
Posts: 39
Likes: 0
Re: 92 3.1 RS wont start

I think its a timing issue. It will run but only when I rev it. I also discovered the o ring in the throttle body is bad and it leaks coolant. Does anyone know the part number for it?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Orr89RocZ
Power Adders
206
Apr 25, 2016 08:28 AM
SolarGoldRaptor
Carburetors
16
Aug 25, 2015 02:25 PM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM
the_nikfive
DIY PROM
2
Aug 11, 2015 02:46 AM
guy76767
Tech / General Engine
1
Aug 6, 2015 05:58 PM




All times are GMT -5. The time now is 10:55 PM.