New 3 core, 4th gen fans, hoses, tstat... still rising
09-19-2012, 04:28 PM
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Car: 1988 Iroc-Z
Engine: 350 TPI; Stock internals
Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
New 3 core, 4th gen fans, hoses, tstat... still rising
Ok so on my 88 IROC 350 car, I just put a new Victory 3 core rad in, had the 4th gen fans for awhile (they work great), new 160* tstat, and upper & lower hoses replaced w/in the last 10 months or so... Air dam is intact (one very small slit in the middle but it doesnt effect operation.
When I idol, w/ or w/o AC on, it stays in the 160-170 range. When I get much about 30 mph, the temp starts rising and wont cool back down until I come to a stop for a second. The only thing I can think of is that I'm missing some other under carriage plastics or that the pump is going out BUT can see the coolant PUMPING hard thru the rad. (The temp max's out around 220 or so but it should NOT be getting that high with the system that I have...)
This has be pretty stumped so opinions are welcome please...
Thanks,
Doc
When I idol, w/ or w/o AC on, it stays in the 160-170 range. When I get much about 30 mph, the temp starts rising and wont cool back down until I come to a stop for a second. The only thing I can think of is that I'm missing some other under carriage plastics or that the pump is going out BUT can see the coolant PUMPING hard thru the rad. (The temp max's out around 220 or so but it should NOT be getting that high with the system that I have...)
This has be pretty stumped so opinions are welcome please...
Thanks,
Doc
09-19-2012, 11:22 PM
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Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Re: New 3 core, 4th gen fans, hoses, tstat... still rising
Ok so on my 88 IROC 350 car, I just put a new Victory 3 core rad in, had the 4th gen fans for awhile (they work great), new 160* tstat, and upper & lower hoses replaced w/in the last 10 months or so... Air dam is intact (one very small slit in the middle but it doesnt effect operation.
When I idol, w/ or w/o AC on, it stays in the 160-170 range. When I get much about 30 mph, the temp starts rising and wont cool back down until I come to a stop for a second. The only thing I can think of is that I'm missing some other under carriage plastics or that the pump is going out BUT can see the coolant PUMPING hard thru the rad. (The temp max's out around 220 or so but it should NOT be getting that high with the system that I have...)
This has be pretty stumped so opinions are welcome please...
Thanks,
Doc
When I idol, w/ or w/o AC on, it stays in the 160-170 range. When I get much about 30 mph, the temp starts rising and wont cool back down until I come to a stop for a second. The only thing I can think of is that I'm missing some other under carriage plastics or that the pump is going out BUT can see the coolant PUMPING hard thru the rad. (The temp max's out around 220 or so but it should NOT be getting that high with the system that I have...)
This has be pretty stumped so opinions are welcome please...
Thanks,
Doc
09-20-2012, 08:32 AM
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Car: 1988 Iroc-Z
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Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
Re: New 3 core, 4th gen fans, hoses, tstat... still rising
Yea but why? I'm going to replace the h2o pump & put a 180* tstat in & see if that helps... Kinda at my end right now lol...
09-20-2012, 09:57 AM
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Car: 87' IROC
Engine: L98
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Re: New 3 core, 4th gen fans, hoses, tstat... still rising
It sure sounds like an air flow problem to me. I don't think a new tstat or water pump is going to make any difference. What plastics are you missing underneath?
09-20-2012, 06:52 PM
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Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Re: New 3 core, 4th gen fans, hoses, tstat... still rising
Wire your fans on constantly. If the problem mitigates, it's an airflow issue.
09-22-2012, 11:48 AM
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Car: 1988 Iroc-Z
Engine: 350 TPI; Stock internals
Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
Re: New 3 core, 4th gen fans, hoses, tstat... still rising
I have an air dam & nothing else as far as plastics go.
The fans are on a keyed switch already.
It has to be an air flow problem but I cant figure out what's causing the problem lol
The fans are on a keyed switch already.
It has to be an air flow problem but I cant figure out what's causing the problem lol
09-22-2012, 11:54 AM
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Car: 87' IROC
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Re: New 3 core, 4th gen fans, hoses, tstat... still rising
Do you have anything blocking the radiator from getting air from the fog light holes?
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09-22-2012, 12:47 PM
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Car: 1988 Iroc-Z
Engine: 350 TPI; Stock internals
Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
Re: New 3 core, 4th gen fans, hoses, tstat... still rising
The plastics weren't on the car when I bought it & I don't have any to put back on it. Nothing blocking the fog light holes either. I have a grill insert but that's it.
09-22-2012, 12:51 PM
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Car: 1988 Iroc-Z
Engine: 350 TPI; Stock internals
Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
Re: New 3 core, 4th gen fans, hoses, tstat... still rising
After looking at some pics of the plastics for the undercarriage, the only ones I am missing are the L&R pieces that extend from the air dam.
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