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Gearbox Oil and CHT Sensor
I plan to do these two jobs this sunday. I figure if i have to jack the car up and yank the LR wheel off, i might as well do the Cylinder Head temp Sensor and Gearbox Oil at once...
I have seen the DIY's, etc. I just wanted to see if there was anything I should be aware of, or any tricks to do these two jobs. No real photos of a CHT job. I got the car about a month ago, and have noticed bad dead spots in acceleration since i got it. Much worse when engine is cold. All signs point to the sensor. I checked, and i have the ol' one-wire sensor in there now. Though, i pull the harness for it on the sensor "tree", and it gets much worse and idles funny. So i'm not sure if that means it's working, or if it means that it might be working SOME when it is plugged in... I plan to change the G50 with M1 Delvac. Found it at the Drillspot.com for $59.00 with free 3-day shipping... $1.99 extra to get it in two days... not bad! Special or suggested tools for the CHT sensor? Tricks?
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1987 911 Targa 1995 LR Discovery 200TDI 2009 VW Jetta TDI 2005 Nissan Titan |
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03-26-2012, 10:13 AM
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Get off my lawn!
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You will need the CHT tool to get the new one installed and tight. It has a big slot on the side of the socket for the wire to slot out. I made mine from a cheap Chinese socket & a Dremel
Also getting the grommet back into position was a struggle for me. Spray some soapy water on it to lubricate it enough to slip back into position.
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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03-26-2012, 11:04 AM
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Do you know the size socket? Was it a deep socket? I want to make sure i have a cheap one that i can cut on-hand by the time i get my new sensor and Gear Oil. Is there room to get a crows foot in there? I really don't like them, but sometimes you have to... i do have a nice set of metric crows foot (feet?).
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1987 911 Targa 1995 LR Discovery 200TDI 2009 VW Jetta TDI 2005 Nissan Titan |
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03-26-2012, 11:41 AM
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Porsche Addict
Join Date: Nov 2010
Location: St. Louis, Mo
Posts: 177
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Check your intake manifold bolts for proper torque spec. 18 ft lbs. Mine had the same issue.
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03-26-2012, 12:04 PM
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Checked out
Join Date: Jun 2009
Location: On a beach
Posts: 10,127
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The CHT is an easy job . . . except at pointed out above, getting the rubber grommet back in place can take a little time.
You'll eventually get it, after a lot of prodding, poking, etc. Just usually takes a while b/c it is fairly tight and in a little bit of an awkward spot to reach. |
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03-26-2012, 01:33 PM
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Checked out
Join Date: Jun 2009
Location: On a beach
Posts: 10,127
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As far as tricks, obviously, to thread the new one in, tape one end to the old one and pull the old one through.
Mark the ends so that you get the connections right. |
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03-26-2012, 01:35 PM
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Registered User
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is the new sensor going to have the correct plug to plug right into the Sensor tree?
The harness on the tree is also falling apart on my car. The one that is on the actual tree... i have to tape the harness that goes to the DME to the actual tree to hold it on. I thought that the terminal broke off when i first saw it, but then read that the old sensors only have one terminal and wire (built in ground), but the harness that plugs into it (and goes to DME) has two... odd. Worse case, i can attached the two with some high-temp butt-connectors or something. Last a lot longer than 25 year old plastic harnesses that have been baked.
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1987 911 Targa 1995 LR Discovery 200TDI 2009 VW Jetta TDI 2005 Nissan Titan |
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03-26-2012, 01:50 PM
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Carrera
