Just got a '89 Iroc, has some problems
05-13-2004, 09:47 AM
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Car: '98 Z28 M6 & '89 IROC-Z 350tpi
Just got a '89 Iroc, has some problems
Well I was given this car, a 1989 IROC-Z with a 350 TPI and the auto in it. It's in alright shape I suppose.
One problem I have is that it runs REALLY hot. I mean, it hits the red zone on the gauge more than I'd like to even count. Checked the thermostat, was fine, even replaced it. I noticed only 1 fan comes on and only when the temp reaches the line between 220 and 260. Then it shuts off at 220. Only ONE fan comes on. And I can't tell if it's in fast or slow speed.
The other problem I have is that the car runs fine at any part throttle position up to about 4800-5000rpm, then starts to sputter, and feel like its just not running right. It also does it at WOT, and backfires a little bit.
I'm gonna check the timing on the car to see if thats messed up. There is no SES light on in the car (the bulb does work, comes on when I turn the key) so I have no clue.
The car does have a SMALL cam in it (not sure on the specs) and some shorty headers with a Catted Y and the O2 sensor is plugged in.
Thanks guys for any advice.
One problem I have is that it runs REALLY hot. I mean, it hits the red zone on the gauge more than I'd like to even count. Checked the thermostat, was fine, even replaced it. I noticed only 1 fan comes on and only when the temp reaches the line between 220 and 260. Then it shuts off at 220. Only ONE fan comes on. And I can't tell if it's in fast or slow speed.
The other problem I have is that the car runs fine at any part throttle position up to about 4800-5000rpm, then starts to sputter, and feel like its just not running right. It also does it at WOT, and backfires a little bit.
I'm gonna check the timing on the car to see if thats messed up. There is no SES light on in the car (the bulb does work, comes on when I turn the key) so I have no clue.
The car does have a SMALL cam in it (not sure on the specs) and some shorty headers with a Catted Y and the O2 sensor is plugged in.
Thanks guys for any advice.
05-13-2004, 12:35 PM
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Car: Tree Huggers
Engine: Do Not
Transmission: Appreciate Me.
1. Tune up.
2. Check for air dam.
220 is normal operating temp for that car. You can get a switch to turn it on earlier. To test the second fan, turn on the ac and check it. We have a few nice things on this site, try the cooling board and read the FAQ up top, I think they have willie's article on wiring up both fans. Oh BTW Search is you friend, you will be able to find tons of info on all sorts of things. Good luck.
2. Check for air dam.
220 is normal operating temp for that car. You can get a switch to turn it on earlier. To test the second fan, turn on the ac and check it. We have a few nice things on this site, try the cooling board and read the FAQ up top, I think they have willie's article on wiring up both fans. Oh BTW Search is you friend, you will be able to find tons of info on all sorts of things. Good luck.
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