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Old 12-16-2014, 11:02 AM
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knock when shifting to drive and on decel

I just purchased a 2005 WK with 180k miles on it. It knocks when shifting from park to drive and occasionally when on a rough road. It also pops when I let off the gas pedal (only once or twice not repeated popping). Any ideas? It is coding the oil pressure sensor that is on order but I believe unrelated.

Initial thoughts are to replace ball joints and sway bars and give it the throttle/carb a good cleaning. I'm thinking they are two unrelated issues one suspension one having to do with the fuel mixture. But i dont want to throw money at something that isnt broke.

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Old 12-17-2014, 04:27 PM
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Re: knock when shifting to drive and on decel

UPDATE:

Another post had me take a look at the front differential while someone shifted for me. It clearly jumps and the knock i was hearing is the diff hitting the skid plate. Parts are on order along with ball joints and I'll update what that does for me.
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Old 12-21-2014, 01:07 AM
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knock when shifting to drive and on decel

Differential mount and bushings solved the clunking. Along with new wheel hub on drivers side for grinding and that probl solved.

I'm still getting a random clunk and almost feels like resistance when moving from parked... Totally lost on that.

Now I seem to have a problem with idling so on to the next issue.


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Old 01-23-2015, 01:01 PM
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Re: knock when shifting to drive and on decel

Resistance could be sticking caliper. After driving it, pull over and feel each of the wheels, and if one is hot, the caliper is sticking. What engine do you have the idle problem with ?
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Old 01-23-2015, 01:20 PM
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Re: knock when shifting to drive and on decel

Also check the rear parking brake shoes, it happened more often that the friction material came loose from the shoe, causing clunks and rotation resistance.
Regarding the fuel mixture, you will need a scanner with live data or an android phone with Torque app and dongle, to read the O2 sensor voltage. The 1-1 and 2-1 sensors should change rapidly from 0.2-0.8V. A steady voltage means normally an O2 sensor fault. If the voltage changes rapidly, then you will need to check the fuel trim figures. STFT (short term fuel trim) should normally go from +-5% during steady state. When in the single digits its normal, while when going above the 10% it normally is not.
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