Quote:
Originally Posted by warmkop
The car is overheating very fast wen i race her took out the thermostat but still overheating. so the fan clutch is not working will that cause it to overheat that fast or is it the waterpump.
What will cause the car to miss at so 6000rpm wen i rev her in neutral
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It's the fan. Also, be sure to run pure, distilled water (no antifreeze). Use Redline Water Wetter as an anti-corrosive.
Regarding the miss, check your spark plug gaps. How old are your plugs? Are they copper, platinum or iridium? What is the heat range?
Next possibility is the coilpacks - how many miles on them. If not that old (less than 75k miles), purchase one brand-new one, and swap it out for each one of the six till the problem is fixed.
Of course, if your coilpack connectors (plastic) are cracked/brittle, they need to be replaced.
Last (least likely) is the ignitor. Swap it with an ignitor from another Mkiv Supra Turbo to test.