Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: jay140285 on December 01, 2010, 08:16:24 AM

Title: Oil Pressure Guage
Post by: jay140285 on December 01, 2010, 08:16:24 AM
Hi,

2002 4.7V8 60th Anniversary Grand Cherokee.

Driving to work this morning -2 temp outside. All of a sudden the guage warning light came on and the oil guage was reading 0.

Upon pulling away it went up to 1/2 way one the guage but everytime I stop moving and the revs drop below 1000 it goes back to 0.

Whats causing this, have i blown a pipe somewhere or oil pump failing??? only had the car just over a week.

Cheers
Title: Re: Oil Pressure Guage
Post by: scrw on December 01, 2010, 09:23:55 AM
I would change the oil & filter (for peace of mind) & check with a mechanical pressure gauge, could be a sender.
Title: Re: Oil Pressure Guage
Post by: jay140285 on December 01, 2010, 09:28:20 AM
Its just had a service only 2000mile ago,

Car is under warranty from where I brought it from. If its a quick fix I will sort myself rather that get the car recovered 50miles back to the garage.
Title: Re: Oil Pressure Guage
Post by: wildrover on December 01, 2010, 10:20:28 AM
The oil pressure guage on my diesal cherokee waves about like a conductors baton..!   Nothing wrong with the oil pressure , just a duff sender unit it seems....

Probably the same problem on yours , but its best to have it checked out , if you really do have low oil presure it can kill an engine very quickly...
Title: Re: Oil Pressure Guage
Post by: Mike Pavelin on December 01, 2010, 09:20:30 PM
Get it back to the supplying dealer asap.
Title: Re: Oil Pressure Guage
Post by: jay140285 on December 02, 2010, 11:06:33 AM
Driving home last night, all was perfect.

Coming to work this morning, it kept playing up again.

Going to contact the dealer now to see what they think.
Title: Re: Oil Pressure Guage
Post by: wildrover on December 02, 2010, 03:17:35 PM
Sounds like its the sender unit...but best to get it checked...somebody told me that to get to the sender unit to replace it is a bit of a pain , hence the reason mine is still waving about all over the place...