Low oil pressure on 88's XJ
 

Hello

I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
000Km).

I think I have to replace the oil pump ? or did I have to change something
else ?

Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
services.

Re: Low oil pressure on 88's XJ
 

Check your oil pressure sender first. They are nortorious for soft
failure where the readings get quite off. US$25, 30 minutes to change out.

Nicolas FOURNIL wrote:
> Hello
>
> I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
> jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
> 000Km).
>
> I think I have to replace the oil pump ? or did I have to change something
> else ?
>
> Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
> automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
> services.
>
>

Re: Low oil pressure on 88's XJ
 

Check your oil pressure sender first. They are nortorious for soft
failure where the readings get quite off. US$25, 30 minutes to change out.

Nicolas FOURNIL wrote:
> Hello
>
> I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
> jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
> 000Km).
>
> I think I have to replace the oil pump ? or did I have to change something
> else ?
>
> Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
> automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
> services.
>
>

Re: Low oil pressure on 88's XJ
 

Check your oil pressure sender first. They are nortorious for soft
failure where the readings get quite off. US$25, 30 minutes to change out.

Nicolas FOURNIL wrote:
> Hello
>
> I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
> jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
> 000Km).
>
> I think I have to replace the oil pump ? or did I have to change something
> else ?
>
> Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
> automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
> services.
>
>

Re: Low oil pressure on 88's XJ
 

Check your oil pressure sender first. They are nortorious for soft
failure where the readings get quite off. US$25, 30 minutes to change out.

Nicolas FOURNIL wrote:
> Hello
>
> I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
> jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
> 000Km).
>
> I think I have to replace the oil pump ? or did I have to change something
> else ?
>
> Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
> automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
> services.
>
>

Re: Low oil pressure on 88's XJ
 

That pressure doesn't sound too far off for an 88. The senders are not
known to be very accurate when they get old. I would first clean the
connection on the sender, then change that or have someone put a
mechanical one in to test the real pressure before ripping into the
engine.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Nicolas FOURNIL wrote:
>
> Hello
>
> I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
> jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
> 000Km).
>
> I think I have to replace the oil pump ? or did I have to change something
> else ?
>
> Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
> automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
> services.

Re: Low oil pressure on 88's XJ
 

That pressure doesn't sound too far off for an 88. The senders are not
known to be very accurate when they get old. I would first clean the
connection on the sender, then change that or have someone put a
mechanical one in to test the real pressure before ripping into the
engine.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Nicolas FOURNIL wrote:
>
> Hello
>
> I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
> jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
> 000Km).
>
> I think I have to replace the oil pump ? or did I have to change something
> else ?
>
> Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
> automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
> services.

Re: Low oil pressure on 88's XJ
 

That pressure doesn't sound too far off for an 88. The senders are not
known to be very accurate when they get old. I would first clean the
connection on the sender, then change that or have someone put a
mechanical one in to test the real pressure before ripping into the
engine.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Nicolas FOURNIL wrote:
>
> Hello
>
> I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
> jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
> 000Km).
>
> I think I have to replace the oil pump ? or did I have to change something
> else ?
>
> Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
> automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
> services.

Re: Low oil pressure on 88's XJ
 

That pressure doesn't sound too far off for an 88. The senders are not
known to be very accurate when they get old. I would first clean the
connection on the sender, then change that or have someone put a
mechanical one in to test the real pressure before ripping into the
engine.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Nicolas FOURNIL wrote:
>
> Hello
>
> I have a low oil pressure on my 6L 242 engine : about the first 1/4 of the
> jauge on idle and 1/3 maximum @ 4000RPM. It has about 150 000 Miles (215
> 000Km).
>
> I think I have to replace the oil pump ? or did I have to change something
> else ?
>
> Thanks for advice. I'm in France and here those cars are "exotics" (6L 4L
> automatic, here there more 4L 2.1LTurbo Diesel mecanic) for mecanic
> services.