Originally posted by horseydug:
Thermostat test from '97 & '98 Ford manuals:
"Remove the water thermostat and immerse in a boiling antifreeze and water mixture. The water thermostat should begin to open at 86 - 90 º C (187 - 194 º F) 2.0L engine, 84 - 88 º C (183 - 190 º F) 2.5L engine and be fully open at 102 º C (216 º F) 2.0L engine, 99 º C (210 º F) 2.5L engine. Install a new thermostat if it does not operate as specified."
Kinda makes you wonder why Ford would use a thermostat that only starts to open past the optimum you state of 180 F degrees.
Perhaps you should check your facts.
what a manual says and what is ON these cars are two different things please check your facts first before telling someone else to check theirs.
I have had the 180 thermostat hector sopke of for over a year now and it made a BIG differance my temp gauge never goes past the O in normal and the car runs MUCH better because of it. I also picked up the stock one for the car new and put it in to do some testing and as sleeper stated it is a 195F my temp gauge was sitting in the M on Normal and acceleration was sluggish compaired to the 180 thermostat.
but what the hell could I know about a Zetec... OOH wait I own one do you?
2003 Subaru WRX some mods
Even if you don't have the answer, you certainly have to admire the problem.
aka ZetecRacing
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