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!

Problem with 1991 Firebird 305

Thread Tools
 
Search this Thread
 
Old 08-04-2017, 05:13 PM
  #1  
Junior Member
Thread Starter
 
ProblemChild91's Avatar
 
Join Date: Aug 2017
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Problem with 1991 Firebird 305

I bought a 1991 firebird formula (305 TPI, 111,xxx Miles) about three weeks ago, I drove it for a short amount of time and it began to see problems. At some point early it may or may not have ran entirely out of fuel, it wouldn't start but then I was able to put 14 gallons into the 15.5 gallon tank. Now it will crank and (maybe) start. If it does drive it will last about 10-15 minutes then die. If I let it sit for a day or two it will then drive for a short amount of time again. I took it to a shop and they believe it is the Injectors, he says the fuel pressure is good, but out of 6 injectors he checked: 4 injectors gave off 5.1 ohms and 2 checked out at 17.2 ohms.
When i turn the key I hear the fuel pump turn on and all electronic amenities wake up as well.
Has anyone had a similar experience and can share their thoughts? And if so what route should I take to solve it?

Last edited by ProblemChild91; 08-04-2017 at 06:23 PM. Reason: Too long of a title
Old 08-07-2017, 09:49 PM
  #2  
Junior Member
 
Chris Degand's Avatar
 
Join Date: Aug 2017
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Re: Problem with 1991 Firebird 305

Hi I have a 95 Z28 Camaro I just did the head gaskets on it took the engine and transmission completely out put the new head gaskets and everything back in got all everything hooked back up and try to start it and sounds like my engines not turning fast enough and then I noticed I have smelling smoke something burning like a wiring harness on the passenger side what would be causing that or can I get suggestions on how to fix it thank you LT1 and I just replace my starter and my battery cuz I think that went bad to do to the burning of the wiring harness
Old 08-07-2017, 10:38 PM
  #3  
Supreme Member

iTrader: (1)
 
wgripp's Avatar
 
Join Date: Apr 2005
Location: Valdosta, GA
Posts: 1,165
Likes: 0
Received 1 Like on 1 Post
Car: 1991 Trans Am GTA
Engine: L98(5.7 L TPI)
Transmission: 700r4(A4)
Axle/Gears: G80 RPO, 3:23s, Auburn Racer's Diff
Re: Problem with 1991 Firebird 305

If you replace the injectors, go with south bay fuel injectors.
Old 08-07-2017, 10:55 PM
  #4  
Senior Member

 
tealman92's Avatar
 
Join Date: Mar 2002
Location: Ontario, California
Posts: 998
Received 19 Likes on 16 Posts
Car: 1992 Z28
Engine: 383
Transmission: 700R4
Re: Problem with 1991 Firebird 305

Originally Posted by Chris Degand
Hi I have a 95 Z28 Camaro I just did the head gaskets on it took the engine and transmission completely out put the new head gaskets and everything back in got all everything hooked back up and try to start it and sounds like my engines not turning fast enough and then I noticed I have smelling smoke something burning like a wiring harness on the passenger side what would be causing that or can I get suggestions on how to fix it thank you LT1 and I just replace my starter and my battery cuz I think that went bad to do to the burning of the wiring harness
QUOTE
Dude go make your own thread about your problem and don't hijack others.

Anyways on to the op problem.
Your injectors are reading off. So it's safe to say replacing them will be your best bet. Now with this car it's gonna be best to replace the tune up items.
Replace the cap and rotor
Plugs plug wires
Change the fuel pressure regulator
Change the injectors
Replace the ignition control module ( inside the distributor)
Replace fuel filter
Run some seafoam in the tank
Replace the air filtersReplace the PVC valve.
these are standard things to do when purchasing most Thirdgens these days.
​​​​​​
Old 08-07-2017, 11:07 PM
  #5  
Supreme Member
iTrader: (1)
 
GeneralDisorder's Avatar
 
Join Date: Mar 2017
Location: Portland, OR
Posts: 4,255
Received 422 Likes on 323 Posts
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: Problem with 1991 Firebird 305

Yes the injectors are bad. They are famous for shorting out when hot.

GD




All times are GMT -5. The time now is 11:00 AM.