Re: Low Oil Pressure Guesses
 

"Earle Horton" <earle@vascongado.usa> wrote in message
news:4637cf48$0$31846$a82e2bb9@reader.athenanews.c om...
> "Spdloader" <askforit@nospam.triad.rr.com> wrote in message
> news:4637ad69$0$4692$4c368faf@roadrunner.com...
>>
>> "Earle Horton" <earle@vascongado.usa> wrote in message
>> news:46379b1c$0$31797$a82e2bb9@reader.athenanews.c om...
>> > "Spdloader" <askforit@nospam.triad.rr.com> wrote in message
>> > news:46378d8c$0$15097$4c368faf@roadrunner.com...
>> >>
>> >> You did not mention
>> >> > if you bought it new or the mileage on it.
>> >>
>> >>
>> >> Um, I did buy it new, and I did mention that the mileage
>> >> was 77,000.
>> >>
>> > Mine's got 90,000+ miles, and it still gets the same oil pressure
>> > as it did when new. The symptoms point to bearings.
>> >
>> > Cheers,
>> >
>> > Earle
>> >
>> >
>> I'm in denial right now Earle, humor me a bit.
>>
> I think that the bearings are "select fit" on this model. You can't just
> order stock or 0.001" under and call it good. You have to plastigage
> every
> one and select fit the right size to each journal. The journals are
> probably scratched too. What did you do to it, so I don't make the same
> mistake? Good enough?
>
> Cheers,
>
> Earle

Don't know for sure what happened. My wife drives it to work everyday, 7-8
miles one way. (to save the miles on her Eddie Bauer Explorer)
She told me a couple of months ago she was seeing the "check gauges" light
up, at idle sometimes, but I couldn't get it to do it when I'd go down and
drive it. (The weather was still cold too)
I did notice it was very, very low on anti-freeze when I serviced it for the
spring, so it may have been running hot, I really don't think she'd know if
it did.
At any rate, since the warm weather is here to stay the "check gauges" thing
has become consistent. One other thing, it rattles upon start up, lower end
rattles, for about 2-3 seconds.
Besides the other things I've done to it, I'm also running straight 40wt
oil.
Spdloader

Re: Low Oil Pressure Guesses
 

"DougW" <post.replies@invalid.address> wrote in message
news:qzQZh.84057$2Q1.44195@newsfe16.lga...
> Spdloader wrote:
>> Wife's '97 TJ, 2.5eng., 77,000 miles.
>>
>> Never been under water, or overheated.
>>
>> Oil always changed at 3500mile intervals.
>>
>> Problem: It has low oil pressure after warm up.
>>
>> Cold (ambient, 65deg.) pressure is 45psi. After warm up, it cruises
>> around 25-30psi then it idles down to "0", and all the check gauges
>> lights all come on. Pressure confirmed within a psi or two with a
>> "live" gauge.
>
> Just a thought, but could the overpressure bypass spring be b0rked
> and sticking only when cold just to open up when warm?
>
> --
> DougW
Umm, huh?

Spdloader

Re: Low Oil Pressure Guesses
 

"DougW" <post.replies@invalid.address> wrote in message
news:qzQZh.84057$2Q1.44195@newsfe16.lga...
> Spdloader wrote:
>> Wife's '97 TJ, 2.5eng., 77,000 miles.
>>
>> Never been under water, or overheated.
>>
>> Oil always changed at 3500mile intervals.
>>
>> Problem: It has low oil pressure after warm up.
>>
>> Cold (ambient, 65deg.) pressure is 45psi. After warm up, it cruises
>> around 25-30psi then it idles down to "0", and all the check gauges
>> lights all come on. Pressure confirmed within a psi or two with a
>> "live" gauge.
>
> Just a thought, but could the overpressure bypass spring be b0rked
> and sticking only when cold just to open up when warm?
>
> --
> DougW
Umm, huh?

Spdloader

Re: Low Oil Pressure Guesses
 

"DougW" <post.replies@invalid.address> wrote in message
news:qzQZh.84057$2Q1.44195@newsfe16.lga...
> Spdloader wrote:
>> Wife's '97 TJ, 2.5eng., 77,000 miles.
>>
>> Never been under water, or overheated.
>>
>> Oil always changed at 3500mile intervals.
>>
>> Problem: It has low oil pressure after warm up.
>>
>> Cold (ambient, 65deg.) pressure is 45psi. After warm up, it cruises
>> around 25-30psi then it idles down to "0", and all the check gauges
>> lights all come on. Pressure confirmed within a psi or two with a
>> "live" gauge.
>
> Just a thought, but could the overpressure bypass spring be b0rked
> and sticking only when cold just to open up when warm?
>
> --
> DougW
Umm, huh?

Spdloader

Re: Low Oil Pressure Guesses
 

"DougW" <post.replies@invalid.address> wrote in message
news:qzQZh.84057$2Q1.44195@newsfe16.lga...
> Spdloader wrote:
>> Wife's '97 TJ, 2.5eng., 77,000 miles.
>>
>> Never been under water, or overheated.
>>
>> Oil always changed at 3500mile intervals.
>>
>> Problem: It has low oil pressure after warm up.
>>
>> Cold (ambient, 65deg.) pressure is 45psi. After warm up, it cruises
>> around 25-30psi then it idles down to "0", and all the check gauges
>> lights all come on. Pressure confirmed within a psi or two with a
>> "live" gauge.
>
> Just a thought, but could the overpressure bypass spring be b0rked
> and sticking only when cold just to open up when warm?
>
> --
> DougW
Umm, huh?

Spdloader

Re: Low Oil Pressure Guesses
 

<mclee@murrah.com> wrote in message
news:1178064308.962104.115350@q75g2000hsh.googlegr oups.com...
>> Problem: It has low oil pressure after warm up.
>>
>> Cold (ambient, 65deg.) pressure is 45psi. After warm up, it cruises
>> around
>> 25-30psi then it idles down to "0", and all the check gauges lights all
>> come
>> on. Pressure confirmed within a psi or two with a "live" gauge.
>> Tapping the throttle obviously raises the pressure slightly, and lights
>> go
>> off. Running the A/C helps increase the idle slightly, increasing
>> pressure
>> slightly.
>
>
> Does it ever return to normal? The early TJs have always had an
> instrument panel problem that sometimes gives erratic oil pressure
> readings. Sometimes mine goes down to nearly zero but eventually it
> returns to normal.
>

No. It is consistent, and I verified it with a live gauge.
Spdloader

Re: Low Oil Pressure Guesses
 

<mclee@murrah.com> wrote in message
news:1178064308.962104.115350@q75g2000hsh.googlegr oups.com...
>> Problem: It has low oil pressure after warm up.
>>
>> Cold (ambient, 65deg.) pressure is 45psi. After warm up, it cruises
>> around
>> 25-30psi then it idles down to "0", and all the check gauges lights all
>> come
>> on. Pressure confirmed within a psi or two with a "live" gauge.
>> Tapping the throttle obviously raises the pressure slightly, and lights
>> go
>> off. Running the A/C helps increase the idle slightly, increasing
>> pressure
>> slightly.
>
>
> Does it ever return to normal? The early TJs have always had an
> instrument panel problem that sometimes gives erratic oil pressure
> readings. Sometimes mine goes down to nearly zero but eventually it
> returns to normal.
>

No. It is consistent, and I verified it with a live gauge.
Spdloader

Re: Low Oil Pressure Guesses
 

<mclee@murrah.com> wrote in message
news:1178064308.962104.115350@q75g2000hsh.googlegr oups.com...
>> Problem: It has low oil pressure after warm up.
>>
>> Cold (ambient, 65deg.) pressure is 45psi. After warm up, it cruises
>> around
>> 25-30psi then it idles down to "0", and all the check gauges lights all
>> come
>> on. Pressure confirmed within a psi or two with a "live" gauge.
>> Tapping the throttle obviously raises the pressure slightly, and lights
>> go
>> off. Running the A/C helps increase the idle slightly, increasing
>> pressure
>> slightly.
>
>
> Does it ever return to normal? The early TJs have always had an
> instrument panel problem that sometimes gives erratic oil pressure
> readings. Sometimes mine goes down to nearly zero but eventually it
> returns to normal.
>

No. It is consistent, and I verified it with a live gauge.
Spdloader

Re: Low Oil Pressure Guesses
 

<mclee@murrah.com> wrote in message
news:1178064308.962104.115350@q75g2000hsh.googlegr oups.com...
>> Problem: It has low oil pressure after warm up.
>>
>> Cold (ambient, 65deg.) pressure is 45psi. After warm up, it cruises
>> around
>> 25-30psi then it idles down to "0", and all the check gauges lights all
>> come
>> on. Pressure confirmed within a psi or two with a "live" gauge.
>> Tapping the throttle obviously raises the pressure slightly, and lights
>> go
>> off. Running the A/C helps increase the idle slightly, increasing
>> pressure
>> slightly.
>
>
> Does it ever return to normal? The early TJs have always had an
> instrument panel problem that sometimes gives erratic oil pressure
> readings. Sometimes mine goes down to nearly zero but eventually it
> returns to normal.
>

No. It is consistent, and I verified it with a live gauge.
Spdloader

Re: Low Oil Pressure Guesses
 

The pressure gauge sender on the 6-cyls are notorious for going bad, have
you confirmed your gauge reading with a mechanical gauge?

"Spdloader" <askforit@nospam.triad.rr.com> wrote in message
news:4637ad69$0$4692$4c368faf@roadrunner.com...
>
> "Earle Horton" <earle@vascongado.usa> wrote in message
> news:46379b1c$0$31797$a82e2bb9@reader.athenanews.c om...
>> "Spdloader" <askforit@nospam.triad.rr.com> wrote in message
>> news:46378d8c$0$15097$4c368faf@roadrunner.com...
>>>
>>> You did not mention
>>> > if you bought it new or the mileage on it.
>>>
>>>
>>> Um, I did buy it new, and I did mention that the mileage
>>> was 77,000.
>>>
>> Mine's got 90,000+ miles, and it still gets the same oil pressure as it
>> did
>> when new. The symptoms point to bearings.
>>
>> Cheers,
>>
>> Earle
>>
>>
> I'm in denial right now Earle, humor me a bit.
>
> lol
>
> Spdloader
>