95 q knock sensors

[jamesmost]

where r they located??

[natsoundup]

Unfortunately , under the plenum... so you may as well do a plenum hose job when doing the knock sensors...then you may as well do the spark plugs and get new gaskets for the valve covers while you have it all apart.

I know I am facing that in the next year or so. At least your good to go for another 60-80k after that.

[jamesmost]

that sucks about 6hours i presume

[Q45tech]

KS don't usually fail unless overheated.......but then again 10 years is enough for temp cycling to eventually cause cracking........or just corrosion from water/coolant drips.

[elwesso]

My Q never had an overheat that Im aware of (no water pump replacement or anything) and the KS are nicely cracked.....

Ill post a picture of my old KS as soon as I get a new camera...

[Q45tech]

We hear and see it all the time: "I have never let my car oveheat", then we pull the KS and they are a totally deformed cracked runny mess......melted reformed plastic with teardrop shapes at two corners where they melted and ran over the edge of heads!

Take your old bad sensor and put them in an oven and see they don't even get soft at 350F.

[jamesmost]

so that is the case u have to remove the plenum?gotta tell u i just dont think mine r badi changed the pcv valve and fuel filter and seems to be a little better also installed my transmission cooler last night to the left of drivers side headlight up against radiator

[Q45tech]

Simple [don't think be sure] do a Consult diagnostic test or just measure their resistance.

[jamesmost]

i understand it is a code 55 if they r bad what is the procedure for measuring resistance??

[Q451990]

Code 55 is good - all systems are checking out normal.

Heath

[Q451990]

The detonation sensor harness connection is located below the throttle cables over the right bank of the engine. It is oriented vertically to the engine, unlike the two connectors below it, which are horizontal.

1. Unplug connector from harness. Picture above is of the detonation sensor harness, not the engine harness going back to the ECU.

2. Set multi-meter to the appropriate range to read a 500,000+ ohm resistor. On mine its labeled 2M.

3. Probe terminal 2 with the red (+) meter lead, and the black (-) meter lead to ground. Result should be about 500KOhms (Meter Reads .500)

4. Probe terminal 2 with the red (+) meter lead, and the black (-) meter lead to ground. Result should be about 500KOhms (Meter Reads .500)