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Old 02-28-2004, 01:19   #1 (permalink)
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Bouncing temp guage, need advice.

Hello all. I drive an EA GL CFI auto, and have the fairly common problem of a bouncing temp guage. However, in the past couple of weeks, I've notice it's been a tad erratic in the way it happens.
Ordinarily, one the car has warmed up a bit, it rises slowly to about halfway, then drops quickly back down to almost outside "Normal"
It has recently, been jumping up quicker, with jerky movements, and has also bounced above half-way a couple of times.
I'm going to be replacing the coolant bottle in a couple of weeks, I need one with a sensor, and was going to get it down at Natrad and have them flush the cooling system at the same time, I don't know when it was last done.
My question is, should I replace the thermostat as well? And if yes, is a non-gen one ok or would I be better off with a Ford one?
And also, is Natrad a good place to go? They are just round the corner from work, so I thought yes.
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Old 02-28-2004, 01:34   #2 (permalink)
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Re: Bouncing temp guage, need advice.

Well I used a genuine one, it lasted about 7 weeks. I'm about to go replace it, I'll use genuine again but if that dies Ford can shove it.
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Old 02-28-2004, 02:32   #3 (permalink)
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Re: Bouncing temp guage, need advice.

Hi mate, i fixed mine last week after it had been doing the same thing for 3 years, finaly got the better of me.
All it was , was the nut on the back of the temp gauge had come loose, and the gauge wasnt getting the signal properly.
Tightened it up, and all is now good.
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Old 02-28-2004, 05:46   #4 (permalink)
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Re: Bouncing temp guage, need advice.

I have to admit, I upgraded to an s-pac dash today and it doesn't seem anywhere near as erratic. I think I'll probably err on the safety side though, a thermostat can't be more than $20 and if the system is drained anyway...
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Old 02-28-2004, 05:53   #5 (permalink)
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Re: Bouncing temp guage, need advice.

Thermostat and O-ring is 28 bucks from Ford.
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Old 02-28-2004, 16:18   #6 (permalink)
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Re: Bouncing temp guage, need advice.

I've found it's worth using the Ford one, even though it's more expensive. Aftermarket ones tend to be a few degrees off. Normally this wouldn't bother a car, but it seems to bother these fuel injection systems quite a lot. After having issues with aftermarket thermostats in 3 separate cars, I have given up and now only use genuine.
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