Re: High Oil Pressure - '99 TJ with 99k miles
 

Get the one from the dealer. Its the best! It is availble out there on CD I think.
-jenn


On 29 Oct 2006 08:03:23 -0800, "surrealis@gmail.com" <surrealis@gmail.com> wrote:

>>Cool, thank you for the advice. Since the pressure sensor is not the
>>same place as my old jeep. The manual i have is a tad outta date 1987.
>>Which manual would anybody suggest? Haynes/Chilton some other?
>>
>>The Dealership one is $130 so thats out.
>>
>>Thanks Again,
>>-Stephen
>>
>>On Oct 29, 9:40 am, Outatime <WhoKn...@here.com> wrote:
>>> Start by replacing the oil pressure sending unit, which is relatively
>>> inxpensive and easy to swap out.
>>>
>>> With that known OK, it's time to swap out the guage internals. If
>>> you're getting a reading of 50 when the engine is off, and the sending
>>> unit is known good, it's time to swap this out.
>>>
>>> If it's working at all (needle moves), place your bets on the sending unit.

Re: High Oil Pressure - '99 TJ with 99k miles
 

Get the one from the dealer. Its the best! It is availble out there on CD I think.
-jenn


On 29 Oct 2006 08:03:23 -0800, "surrealis@gmail.com" <surrealis@gmail.com> wrote:

>>Cool, thank you for the advice. Since the pressure sensor is not the
>>same place as my old jeep. The manual i have is a tad outta date 1987.
>>Which manual would anybody suggest? Haynes/Chilton some other?
>>
>>The Dealership one is $130 so thats out.
>>
>>Thanks Again,
>>-Stephen
>>
>>On Oct 29, 9:40 am, Outatime <WhoKn...@here.com> wrote:
>>> Start by replacing the oil pressure sending unit, which is relatively
>>> inxpensive and easy to swap out.
>>>
>>> With that known OK, it's time to swap out the guage internals. If
>>> you're getting a reading of 50 when the engine is off, and the sending
>>> unit is known good, it's time to swap this out.
>>>
>>> If it's working at all (needle moves), place your bets on the sending unit.

Re: High Oil Pressure - '99 TJ with 99k miles
 

Get the one from the dealer. Its the best! It is availble out there on CD I think.
-jenn


On 29 Oct 2006 08:03:23 -0800, "surrealis@gmail.com" <surrealis@gmail.com> wrote:

>>Cool, thank you for the advice. Since the pressure sensor is not the
>>same place as my old jeep. The manual i have is a tad outta date 1987.
>>Which manual would anybody suggest? Haynes/Chilton some other?
>>
>>The Dealership one is $130 so thats out.
>>
>>Thanks Again,
>>-Stephen
>>
>>On Oct 29, 9:40 am, Outatime <WhoKn...@here.com> wrote:
>>> Start by replacing the oil pressure sending unit, which is relatively
>>> inxpensive and easy to swap out.
>>>
>>> With that known OK, it's time to swap out the guage internals. If
>>> you're getting a reading of 50 when the engine is off, and the sending
>>> unit is known good, it's time to swap this out.
>>>
>>> If it's working at all (needle moves), place your bets on the sending unit.

Re: High Oil Pressure - '99 TJ with 99k miles
 

If the wire to the sending unit is shorted to ground it will peg on 80 psi.

You can rent a mechanical gauge, often at no cost, from many auto parts
stores.

You should check the actual pressure with a mechanical gauge before you
start replacing parts willy-nilly.


<surrealis@gmail.com> wrote in message
news:1162135554.048937.79170@e3g2000cwe.googlegrou ps.com...
> Hello All, I have a 99 TJ sport with about 99k miles on it. The engine
> oil
> pressure two days ago pegged itself at 80psi on the gauge and has
> stayed
> there. It normally sits between 40-60psi when driving and below that
> when
> idling. The oil has been changed every 4-5000 miles, there is no
> knocking
> and the engine sounds fine. I did an oil change this morning and the
> oil was
> practically pristine so I'm some what confused. Also when I turn my key
> in
> the ignition before cranking the engine the oil pressure gauge goes to
> 50
> without the engine running. I also went on a drive yesterday (100miles)
> and
> after about an hour of driving the oil pressure at idle would go down
> to
> about 60-70. I have heard these little oil gauges are notorious for
> crapping
> out so I'm wondering where to start. I have checked for oil leaks since
> high
> pressure blows a gasket and there are none. I don't own a pressure
> testing
> kit and the only ones I have found are $100-150 so that's out. I don't
> have
> the money to throw parts at it at the moment and it is my daily driver
> so
> how can I diagnose this issue? Where would I start? Should I actually
> take
> it to a shop for a check?
>
> Thank you for any advice/help ahead of time,
> -Stephen
>

Re: High Oil Pressure - '99 TJ with 99k miles
 

If the wire to the sending unit is shorted to ground it will peg on 80 psi.

You can rent a mechanical gauge, often at no cost, from many auto parts
stores.

You should check the actual pressure with a mechanical gauge before you
start replacing parts willy-nilly.


<surrealis@gmail.com> wrote in message
news:1162135554.048937.79170@e3g2000cwe.googlegrou ps.com...
> Hello All, I have a 99 TJ sport with about 99k miles on it. The engine
> oil
> pressure two days ago pegged itself at 80psi on the gauge and has
> stayed
> there. It normally sits between 40-60psi when driving and below that
> when
> idling. The oil has been changed every 4-5000 miles, there is no
> knocking
> and the engine sounds fine. I did an oil change this morning and the
> oil was
> practically pristine so I'm some what confused. Also when I turn my key
> in
> the ignition before cranking the engine the oil pressure gauge goes to
> 50
> without the engine running. I also went on a drive yesterday (100miles)
> and
> after about an hour of driving the oil pressure at idle would go down
> to
> about 60-70. I have heard these little oil gauges are notorious for
> crapping
> out so I'm wondering where to start. I have checked for oil leaks since
> high
> pressure blows a gasket and there are none. I don't own a pressure
> testing
> kit and the only ones I have found are $100-150 so that's out. I don't
> have
> the money to throw parts at it at the moment and it is my daily driver
> so
> how can I diagnose this issue? Where would I start? Should I actually
> take
> it to a shop for a check?
>
> Thank you for any advice/help ahead of time,
> -Stephen
>

Re: High Oil Pressure - '99 TJ with 99k miles
 

If the wire to the sending unit is shorted to ground it will peg on 80 psi.

You can rent a mechanical gauge, often at no cost, from many auto parts
stores.

You should check the actual pressure with a mechanical gauge before you
start replacing parts willy-nilly.


<surrealis@gmail.com> wrote in message
news:1162135554.048937.79170@e3g2000cwe.googlegrou ps.com...
> Hello All, I have a 99 TJ sport with about 99k miles on it. The engine
> oil
> pressure two days ago pegged itself at 80psi on the gauge and has
> stayed
> there. It normally sits between 40-60psi when driving and below that
> when
> idling. The oil has been changed every 4-5000 miles, there is no
> knocking
> and the engine sounds fine. I did an oil change this morning and the
> oil was
> practically pristine so I'm some what confused. Also when I turn my key
> in
> the ignition before cranking the engine the oil pressure gauge goes to
> 50
> without the engine running. I also went on a drive yesterday (100miles)
> and
> after about an hour of driving the oil pressure at idle would go down
> to
> about 60-70. I have heard these little oil gauges are notorious for
> crapping
> out so I'm wondering where to start. I have checked for oil leaks since
> high
> pressure blows a gasket and there are none. I don't own a pressure
> testing
> kit and the only ones I have found are $100-150 so that's out. I don't
> have
> the money to throw parts at it at the moment and it is my daily driver
> so
> how can I diagnose this issue? Where would I start? Should I actually
> take
> it to a shop for a check?
>
> Thank you for any advice/help ahead of time,
> -Stephen
>

Re: High Oil Pressure - '99 TJ with 99k miles
 

surrealis@gmail.com wrote:

> The Dealership one is $130 so thats out.

If you don't want it to replace it every few years, buy the OEM item.
I've discovered this the hard way. Most aftermarket parts are junk.

I thought of something else that may help you. If you disconnect the
wire from the sending unit and your guage reads zero before/after
starting, you can be even more sure it's the sending unit. Try this
before replacing anything.

Re: High Oil Pressure - '99 TJ with 99k miles
 

surrealis@gmail.com wrote:

> The Dealership one is $130 so thats out.

If you don't want it to replace it every few years, buy the OEM item.
I've discovered this the hard way. Most aftermarket parts are junk.

I thought of something else that may help you. If you disconnect the
wire from the sending unit and your guage reads zero before/after
starting, you can be even more sure it's the sending unit. Try this
before replacing anything.

Re: High Oil Pressure - '99 TJ with 99k miles
 

surrealis@gmail.com wrote:

> The Dealership one is $130 so thats out.

If you don't want it to replace it every few years, buy the OEM item.
I've discovered this the hard way. Most aftermarket parts are junk.

I thought of something else that may help you. If you disconnect the
wire from the sending unit and your guage reads zero before/after
starting, you can be even more sure it's the sending unit. Try this
before replacing anything.

Re: High Oil Pressure - '99 TJ with 99k miles
 

"Outatime" <WhoKnows@here.com> wrote in message
news:B46dnfOdmsVBfdnYnZ2dnUVZ_oOdnZ2d@softcom.net. ..
> surrealis@gmail.com wrote:
>
> > The Dealership one is $130 so thats out.
>
> If you don't want it to replace it every few years, buy the OEM item.
> I've discovered this the hard way. Most aftermarket parts are junk.

I sort of agree, but I haven't had your experience. Car manufacturers don't
*make* cars - they pretty much just assemble them.
(While this is possibly not true for engines, it is true for practically
everything else, especially sensors). You *can* buy a quality aftermarket
item made by someone whose name you recognise.

Dave