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youngmanvr4 · 04-23-2007, 10:58 PM

In my 90 with a DOHC swap before I sold it I never ran a shroud and never ever came close to heating up. Though I didn't have ac. Even idling for a while I never over heated. So I would rule out airflow.
One thing I did have was 80% coolant 20% water. That will help cooling and doesn't hurt anything.

As others have said,
-water pump
-thermostat
-bleed coolant system

Maybe your gauge in your cluster isn't reading correct?

Get your voltometer out and let it warm up. Than test the resistance between the two pins at the coolant temp sensor.
68 -- 2.1-2.9
122 -- 0.68-1.00
194 -- 0.236-0.260

I believe normal operating temp is about 160°ish but I dont know for sure. So around 0.45 resistance.
If this seem to be on target and your gauge still show over heating then its probably not your temp sensor. I would then look into the actual gauge in the cluster being off. Though it could be the thermostat is the problem.

Are you throwing any CEL? 13 or 98? These are all thoughts...I dont know for sure.

04-23-2007, 10:58 PM	#11
youngmanvr4 Zilvia Junkie Join Date: Oct 2005 Location: Haddam, Ks Age: 35 Posts: 372 Trader Rating: (0)	In my 90 with a DOHC swap before I sold it I never ran a shroud and never ever came close to heating up. Though I didn't have ac. Even idling for a while I never over heated. So I would rule out airflow. One thing I did have was 80% coolant 20% water. That will help cooling and doesn't hurt anything. As others have said, -water pump -thermostat -bleed coolant system Maybe your gauge in your cluster isn't reading correct? Get your voltometer out and let it warm up. Than test the resistance between the two pins at the coolant temp sensor. 68 -- 2.1-2.9 122 -- 0.68-1.00 194 -- 0.236-0.260 I believe normal operating temp is about 160°ish but I dont know for sure. So around 0.45 resistance. If this seem to be on target and your gauge still show over heating then its probably not your temp sensor. I would then look into the actual gauge in the cluster being off. Though it could be the thermostat is the problem. Are you throwing any CEL? 13 or 98? These are all thoughts...I dont know for sure. __________________ Current: 95 240SX SE - VLSD, S. Tech springs, S14 SR, Walbro pump, Nismo 3" catback, HDI FMIC, Koyo Rad. 95 3000GT base - Stock 94 3000GT VR4 - K&N Filter, Test pipe, Denso fuel pump, HKS EVC IV. 92 Ninja EX500 - Full Muzzy exhaust 82 Ford Courier Full Race Truck - 87 Ranger 2.0 engine with fully rebuilt bottom end, stage 2 post and polished head and race cam, Welded diff., K&N Huge Air Breather.