98 Cherokee Classic oil pressure issues
 

I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
start up and driving under acceleration oil pressure gauge reads 40.
When I come to a stop and at idle pressure drops to 10. Then back
under acceleration it jumps to 40. Could this be a bad oil pump,
clogged pump, or more serious issues? TIA, Clay

Re: 98 Cherokee Classic oil pressure issues
 

Sounds normal.

On 19 May 2004 19:13:49 -0700, pakmule2001@yahoo.com (Clay Stevens)
wrote:

>I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
>start up and driving under acceleration oil pressure gauge reads 40.
>When I come to a stop and at idle pressure drops to 10. Then back
>under acceleration it jumps to 40. Could this be a bad oil pump,
>clogged pump, or more serious issues? TIA, Clay

Re: 98 Cherokee Classic oil pressure issues
 

Sounds normal.

On 19 May 2004 19:13:49 -0700, pakmule2001@yahoo.com (Clay Stevens)
wrote:

>I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
>start up and driving under acceleration oil pressure gauge reads 40.
>When I come to a stop and at idle pressure drops to 10. Then back
>under acceleration it jumps to 40. Could this be a bad oil pump,
>clogged pump, or more serious issues? TIA, Clay

Re: 98 Cherokee Classic oil pressure issues
 

Sounds normal.

On 19 May 2004 19:13:49 -0700, pakmule2001@yahoo.com (Clay Stevens)
wrote:

>I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
>start up and driving under acceleration oil pressure gauge reads 40.
>When I come to a stop and at idle pressure drops to 10. Then back
>under acceleration it jumps to 40. Could this be a bad oil pump,
>clogged pump, or more serious issues? TIA, Clay

Re: 98 Cherokee Classic oil pressure issues
 

Sounds normal.

On 19 May 2004 19:13:49 -0700, pakmule2001@yahoo.com (Clay Stevens)
wrote:

>I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
>start up and driving under acceleration oil pressure gauge reads 40.
>When I come to a stop and at idle pressure drops to 10. Then back
>under acceleration it jumps to 40. Could this be a bad oil pump,
>clogged pump, or more serious issues? TIA, Clay

Re: 98 Cherokee Classic oil pressure issues
 

Matt Osborn did pass the time by typing:
> Sounds normal.

Actually, it's a little low. not bad though
but a little higer under acceleration would be
better.

> (Clay Stevens) wrote:
>
>> I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
>> start up and driving under acceleration oil pressure gauge reads 40.
>> When I come to a stop and at idle pressure drops to 10. Then back
>> under acceleration it jumps to 40. Could this be a bad oil pump,
>> clogged pump, or more serious issues? TIA, Clay

Spec:
Idle (600 RPM) 13psi
(1600 RPM) 37-75psi

That could be just dirty connections on the sensor.
It's down by the oil filter, just remove, clean, and
replace the connector.

56K is a little low for having bearing wear or a wearing
pump. What oil are you running?


--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: 98 Cherokee Classic oil pressure issues
 

Matt Osborn did pass the time by typing:
> Sounds normal.

Actually, it's a little low. not bad though
but a little higer under acceleration would be
better.

> (Clay Stevens) wrote:
>
>> I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
>> start up and driving under acceleration oil pressure gauge reads 40.
>> When I come to a stop and at idle pressure drops to 10. Then back
>> under acceleration it jumps to 40. Could this be a bad oil pump,
>> clogged pump, or more serious issues? TIA, Clay

Spec:
Idle (600 RPM) 13psi
(1600 RPM) 37-75psi

That could be just dirty connections on the sensor.
It's down by the oil filter, just remove, clean, and
replace the connector.

56K is a little low for having bearing wear or a wearing
pump. What oil are you running?


--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: 98 Cherokee Classic oil pressure issues
 

Matt Osborn did pass the time by typing:
> Sounds normal.

Actually, it's a little low. not bad though
but a little higer under acceleration would be
better.

> (Clay Stevens) wrote:
>
>> I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
>> start up and driving under acceleration oil pressure gauge reads 40.
>> When I come to a stop and at idle pressure drops to 10. Then back
>> under acceleration it jumps to 40. Could this be a bad oil pump,
>> clogged pump, or more serious issues? TIA, Clay

Spec:
Idle (600 RPM) 13psi
(1600 RPM) 37-75psi

That could be just dirty connections on the sensor.
It's down by the oil filter, just remove, clean, and
replace the connector.

56K is a little low for having bearing wear or a wearing
pump. What oil are you running?


--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: 98 Cherokee Classic oil pressure issues
 

Matt Osborn did pass the time by typing:
> Sounds normal.

Actually, it's a little low. not bad though
but a little higer under acceleration would be
better.

> (Clay Stevens) wrote:
>
>> I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
>> start up and driving under acceleration oil pressure gauge reads 40.
>> When I come to a stop and at idle pressure drops to 10. Then back
>> under acceleration it jumps to 40. Could this be a bad oil pump,
>> clogged pump, or more serious issues? TIA, Clay

Spec:
Idle (600 RPM) 13psi
(1600 RPM) 37-75psi

That could be just dirty connections on the sensor.
It's down by the oil filter, just remove, clean, and
replace the connector.

56K is a little low for having bearing wear or a wearing
pump. What oil are you running?


--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: 98 Cherokee Classic oil pressure issues
 

More than likely if there's an issue it's with the sender. You can get a
mechanical gauge to hook up to your sender port and check the pressure that
way.

"Clay Stevens" <pakmule2001@yahoo.com> wrote in message
news:f571ee0d.0405191813.4948af0f@posting.google.c om...
> I have the 4.0 I6 with 56k miles. Engine burns or leaks no oil. At
> start up and driving under acceleration oil pressure gauge reads 40.
> When I come to a stop and at idle pressure drops to 10. Then back
> under acceleration it jumps to 40. Could this be a bad oil pump,
> clogged pump, or more serious issues? TIA, Clay