Re: 90 XJ cranking issue
 

I replaced the cps sensor about a month ago to be sure, and today I cleaned
the TPS sensor connections and the cps just to be sure. I haven't had it
happen today but I notice that since I changed the oil in it yesterday I
have a knocking noise from the valvecover while idling, when the oil
pressure it down and the engine is hot. Maybe the old oil was keeping it
quiet, but should I go with a thicker oil? I'm using 10w30 now, would a
slightly heavier oil make it quieter? It has 150,000 miles on it and I'm
pretty sure none of the previous owners did anything major to it. Shouldn't
be too hard to do some work under there myself would it?

Troy

"L.W.(Bill) ------ III" <----------@cox.net> wrote in message
news:44AFFC7B.CC09A6C0@cox.net...
> That is the test for the Crankshaft Position Sensor, first going
> bad:
> http://www.off-road.com/jeep/cheroke...tdcsensor.html
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Troy wrote:
>>
>> Hmm, well I've replaced the cps sensor already so it must be the TPS... I
>> remember it drove funny and so I just unplugged it and plugged it back in
>> a
>> few times and that seemed to fix it. I will get the cleaner now and just
>> use up the can on all the connections I can find in the thing for good
>> measure, thanks!
>>
>> Troy

Re: 90 XJ cranking issue
 

I replaced the cps sensor about a month ago to be sure, and today I cleaned
the TPS sensor connections and the cps just to be sure. I haven't had it
happen today but I notice that since I changed the oil in it yesterday I
have a knocking noise from the valvecover while idling, when the oil
pressure it down and the engine is hot. Maybe the old oil was keeping it
quiet, but should I go with a thicker oil? I'm using 10w30 now, would a
slightly heavier oil make it quieter? It has 150,000 miles on it and I'm
pretty sure none of the previous owners did anything major to it. Shouldn't
be too hard to do some work under there myself would it?

Troy

"L.W.(Bill) ------ III" <----------@cox.net> wrote in message
news:44AFFC7B.CC09A6C0@cox.net...
> That is the test for the Crankshaft Position Sensor, first going
> bad:
> http://www.off-road.com/jeep/cheroke...tdcsensor.html
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Troy wrote:
>>
>> Hmm, well I've replaced the cps sensor already so it must be the TPS... I
>> remember it drove funny and so I just unplugged it and plugged it back in
>> a
>> few times and that seemed to fix it. I will get the cleaner now and just
>> use up the can on all the connections I can find in the thing for good
>> measure, thanks!
>>
>> Troy

Re: 90 XJ cranking issue
 

I replaced the cps sensor about a month ago to be sure, and today I cleaned
the TPS sensor connections and the cps just to be sure. I haven't had it
happen today but I notice that since I changed the oil in it yesterday I
have a knocking noise from the valvecover while idling, when the oil
pressure it down and the engine is hot. Maybe the old oil was keeping it
quiet, but should I go with a thicker oil? I'm using 10w30 now, would a
slightly heavier oil make it quieter? It has 150,000 miles on it and I'm
pretty sure none of the previous owners did anything major to it. Shouldn't
be too hard to do some work under there myself would it?

Troy

"L.W.(Bill) ------ III" <----------@cox.net> wrote in message
news:44AFFC7B.CC09A6C0@cox.net...
> That is the test for the Crankshaft Position Sensor, first going
> bad:
> http://www.off-road.com/jeep/cheroke...tdcsensor.html
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Troy wrote:
>>
>> Hmm, well I've replaced the cps sensor already so it must be the TPS... I
>> remember it drove funny and so I just unplugged it and plugged it back in
>> a
>> few times and that seemed to fix it. I will get the cleaner now and just
>> use up the can on all the connections I can find in the thing for good
>> measure, thanks!
>>
>> Troy