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89 iroc suddenly wont start

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Old Mar 20, 2011 | 12:54 AM
  #1  
Bobby Suth's Avatar
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From: tn.
Car: 1990 firebird,1989 Iroc z,1986 fire
Engine: 3.1lt,5.7tpi,3.1mpfi
Transmission: auto,auto
Axle/Gears: 273?277
89 iroc suddenly wont start

I'm tore up over it.My car was having a battery drain through what seamed to be the altnator.also hasn't been run much in a few years and when I got it I could start it with a shot of starting fluid.I put seafoam in the gas and put the new altnator on.Got it started and started running smother,but at a high idle,1500rpm.I let it run about 7 to 10 min.and shut it off.tryed to re start and nothing but turnning over.thats happened before. so I shot it with starting fluid again,this time no help.Now it turns over good.In the 10 atemps in the last 2 hours I did get a fire out of it.but no start.Now if vats is acting up,and i give it starting fluid and the thing is turning over,shouldn't it start for a few seconds at least?Plus if it were to be a fuel issue it should start till the fluid is gone,right?Vats only cuts off the fuel delivery dosn't it?What are the chances that it could have lost electric pulse or spark from just turning the key off?the only thing different was the high idle.
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Old Mar 20, 2011 | 01:02 AM
  #2  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: 89 iroc suddenly wont start

Originally Posted by Bobby Suth
What are the chances that it could have lost electric pulse or spark
Have you check for spark?
What fuel pressure do you have?

Originally Posted by Bobby Suth
Vats only cuts off the fuel delivery dosn't it?
VATS takes out starter and fuel injectors so if it cranks most likely not VATS related

Last edited by vetteoz; Mar 20, 2011 at 01:36 AM.
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Old Mar 20, 2011 | 01:07 AM
  #3  
Bobby Suth's Avatar
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Joined: Mar 2010
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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: 89 iroc suddenly wont start

I havn't taken eny sparkplugs out,or coil wire off.But two different times when I was tring to start it just before the battery would give out it fired a time or two.Can ya flood one with starting fluid?
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Old Mar 20, 2011 | 08:57 AM
  #4  
Bobby Suth's Avatar
Thread Starter
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Joined: Mar 2010
Posts: 989
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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: 89 iroc suddenly wont start

OK,went out this morning and the altnator fixed the battery drain ptoblem.The car started right up,run ruff,did start and run though!I need to drain the tank change the fuel filter and injectors and get a transmition and i'm ready for the road.
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