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over heating
Still woking out the bugs on a 968 motor swap on an 87 951. My latest finding is it that the temp spikes when driving in city traffic. I took my 951 out for a drive yesterday and all was good on the highway and country roads alike. The needle stayed around the first hash mark. When I hit some traffic lightsi noticed that the needle went almost to the red. It has never done this before. I turned on the A/C fans and the temp went down, like it's supposed to. When i got home I checked it out and did some easy checks.
The fans come on when the A/C switch is depressed. The fans do not come on when the temp spikes. i got nervous when the needle hit the red and I turned the fans on again with the A/C. Bad thermo switch or bad relay? |
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03-08-2011, 05:57 AM
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Bleed bleed bleed
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87 951 all stock exc. cup II's /94 968 6-spd, lowered,17in. RUF Speedlines, M030 anti- sways/ 94 968 Tip, Cup II's, otherwise stock |
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03-08-2011, 07:24 AM
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Already done. There is no air in system. Good thought though.
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03-08-2011, 08:43 AM
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NY944Turbo
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Is the radiator still the original?
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03-08-2011, 10:07 AM
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Join Date: Sep 2007
Location: new hampshire
Posts: 104
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my 968 had same symptoms....twice........1st time was because fans weren't switching on and it cured problem.....i replaced thermo/fan switch....2nd time was 2 months later...i took out thermostat and ran it without it and had no overheating...
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03-08-2011, 11:46 AM
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New rad, new hoses, newer water pump. Old switch and relays. I don't mind replacing but i am curious as to what is the cause of the problem.
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03-08-2011, 02:55 PM
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Join Date: Mar 2008
Location: Chatsworth, Ontario, Canada
Posts: 561
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...likely the temp switch on the rad...swap it and match it to a new thermostat, and it should work.
Also...how's the tension on your timing belt? Been re-tensioned as required? It may be slipping on the waterpump pulley. Might be worth a look.
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Rick Harrison 1988 944S 17 inch Cup 2's, euro bumper conversion Magnaflow 2 1/2" exhaust with K & N 4 inch custom intake MaxHP chipped |
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03-09-2011, 07:46 AM
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Thanks. I will triy to get it done in the next couple weeks. I still have to retension belts and fix a leaking steering line. The fun never ends!:
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87 951 with 94 968 engine, 17" turbo twist, 18" modular |
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03-11-2011, 04:59 AM
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2010 
