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90 Iroc STARTING PROBLEMS!!!

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Old Apr 18, 2006 | 04:40 PM
  #1  
2badcams's Avatar
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From: Anaheim, CA
Car: a 91 rs convertible and a Iroc z convertible
Engine: 305 tbi, and 350 tpi
Transmission: 700r4
90 Iroc STARTING PROBLEMS!!!

i bought an iroc and finally got the starter to turnover after bypassing the VATS system. the car starts with the starter fluid but not without it! any ideas? how can i check for the gas pump to be working? please help!
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Old Apr 18, 2006 | 07:31 PM
  #2  
thirdgen88's Avatar
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From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
How did you bypass the VATS system?? Just because you have the starter turning now doesn't mean that VATS is disabled. Without the proper square wave signal to the ECM from the VATS module, the ECM will not pulse the injectors, and the motor will not fire. You need to burn a new PROM with VATS disabled.. Or, repair the VATS system, since it obviously works pretty well..
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Old Apr 19, 2006 | 11:11 AM
  #3  
D's89IROCZ's Avatar
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From: Ontario, Canada
Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
quit starting it with fluid . It's a bad thing to do for long periods of time .
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Old Apr 19, 2006 | 05:28 PM
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2badcams's Avatar
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From: Anaheim, CA
Car: a 91 rs convertible and a Iroc z convertible
Engine: 305 tbi, and 350 tpi
Transmission: 700r4
well i just got it to turn over. i was told to measure the the resistance on the key, and then to get a resistor and connect it to the to white cables wrapped on orange. i did this and now the security light goes off. before the car wouldnt even turn over and now it does. however it wouldnt start just crank . i sprayed some starter fluid in it and it started, but then it turned of. how can i check for the injectors to be pulsing?
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Old Apr 20, 2006 | 03:47 PM
  #5  
D's89IROCZ's Avatar
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From: Ontario, Canada
Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
Take a long sockewt extension . Touch one end to the injector , and the other end to your ear ( the boney flap on the outside). Should notice a constant ticking .
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Old Apr 21, 2006 | 11:03 AM
  #6  
2badcams's Avatar
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From: Anaheim, CA
Car: a 91 rs convertible and a Iroc z convertible
Engine: 305 tbi, and 350 tpi
Transmission: 700r4
thanks...and by the way i heard your sound clip it sounds hella tight!!!!! sounds freakin mean!!! but thanks for the ideas, anymore just hit me up! thanks
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Old Apr 21, 2006 | 11:27 AM
  #7  
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From: San Juan, TX
Car: 1989 Camaro RS
Engine: LS1
Transmission: T56
Axle/Gears: 3.23 posi
I had the same problem with mine. It would turn on with starter fluid only. Later found that there was a cable disconnected from my battery that went to the computer. Took me two days to figure it out.
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Old Apr 24, 2006 | 10:11 PM
  #8  
2badcams's Avatar
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From: Anaheim, CA
Car: a 91 rs convertible and a Iroc z convertible
Engine: 305 tbi, and 350 tpi
Transmission: 700r4
Originally Posted by chevy_camaro_ss
I had the same problem with mine. It would turn on with starter fluid only. Later found that there was a cable disconnected from my battery that went to the computer. Took me two days to figure it out.
what color is the cable? can you please describe it so i can try and find it? thanks
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Old Apr 24, 2006 | 10:15 PM
  #9  
89Vert's Avatar
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Joined: May 2005
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From: Maple Ridge, B.C., Canada
Car: '89 Iroc Vert
Engine: 355 TPI
Transmission: T-5(for now)
Axle/Gears: 3.45 9 Bolt
check for fuel pressure and spark
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