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tiim5
Is there an easy method for the CHT R&R? I couldnt find anything in a search.

Once out, how can I check it with a digital multimeter?

This is on a 1.7, thanks.
rcrgrl
i think you can test it in the car. positive lead on the wire and ground to the chasis. i've recently learned smile.gif that you set the multimeter to 2k on the ohm meter and look for a reading less than 2, like 1.9 or so. - alhtough i think the #'s are different if its warm.

to get it out, i remember reading somewhere that you have to modify a socket to accomodate the wire....
Bruce Allert
Go to Brad Anders site.
P. Brad Anders Web Site

QUOTE
Normal Value(s): 0 280 130 003 and 0 280 130 012: about 2.5 K ohms at 68 deg. F, less than 100 ohms with hot engine.
0 280 130 017: about 1.3 K ohms at 68 deg. F, less than 100 ohms with hot engine.



You can cut or grind a corner of a socket extension to the point of allowing the wire from the CHT to extend thru. Using this item you can remove the CHT carefully. I stripped one once. It was a beotch! Installation is the reverse of removal!

Good luck........ b
tiim5
Thanks for the info. The CHT is in a very tight place, just under the intake runner, is it possible to get a socket on it without having to remove the intake runner, a universal extension or a 1/4" drive with universal perhaps?

It seems there isn't alot of room there.
Bruce Allert
I discovered it sits at an angle so a universal is not needed. Yes you can get at it without taking off the runner. Surprisingly enough, the socket & extension will slip right on when you slide it in at the angle allowed while standing on the passenger side of the engine compartment.

You'll find a lot of things like this on a 914. The engineers put a lot of thought into most access's when they designed it. ... you just gotta find'm idea.gif laugh.gif

.....b
tiim5
Thanks Bruce and rcrgrl for the tips.
I tested the CHT today in the car, cold, 2.62 k ohms for resistance, Anders site says 2.5 is normal.

I am guessing my unit is ok and within normal range?

As I narrow posibilities for somewhat rough running at freeway speeds and poor gas mileage, I think I need to look at the mps. Mark had it tested a year ago, it was ok but would not hold consistant pressure very long.

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