Oil pressure

Hummer H1 and Military Humvee topics
Post Reply
mikefox
Posts: 22
Joined: Thu 24 Nov , 2011 8:48 pm
hummer_info: 1998 H1 6.5 TD

Oil pressure

Post by mikefox » Tue 12 Jun , 2012 11:50 pm

What is normal oil pressure ? I have a 98 h1 and seem to only have around 10psi oil pressure.... I don't imagine that is normal ...

User avatar
JustinOK
Posts: 235
Joined: Tue 04 Sep , 2007 3:39 pm
hummer_info: 1998 TD HMC4
Location: Oklahoma City, OK

Re: Oil pressure

Post by JustinOK » Thu 14 Jun , 2012 11:45 am

How long have you been experiencing this? Has it always been this way or is it something new you are experiencing? Our oil pressure senders have been known to be off. Any other symptoms? knocking, loss of oil quantity, etc?
1998 TD HMC4 w/ 91K miles

Updated Block, HummerDan's Hardcore Skid & Fender Guards, & Locking Fuel Doors; Ham (VHF/UHF) & CB radios; Predator PCM; mech wastegate; Cepek Adj Shocks.
ScanGauge II.
Stanadyne Performance Formula

mgaetajr
Posts: 9
Joined: Thu 14 Jun , 2012 7:19 pm
hummer_info: 2002 H1 hummer open top diesel

Re: Oil pressure

Post by mgaetajr » Thu 14 Jun , 2012 8:28 pm

I have a 2002 h1 diesel and once the engine is warm it shows low oil pressure. It only has 12000 miles and has done this since new. I just figured was just how the 6.5 was.

mikefox
Posts: 22
Joined: Thu 24 Nov , 2011 8:48 pm
hummer_info: 1998 H1 6.5 TD

Re: Oil pressure

Post by mikefox » Thu 14 Jun , 2012 10:26 pm

Well, I'm not exactly sure that's why I was wondering. I had my truck in for service and had them do a new injector pump, crankshaft seal, oil pan gasket, and replace a couple of seals and after getting my truck back I noticed that the oil pressure really seemed low as it was reading 10psi although the temp seemed ok although I cant remember what the temp was. Ive been keeping an eye on it and it seems to just stay around 10psi so really began to wonder if its something I should be concerned about.

mgaetajr
Posts: 9
Joined: Thu 14 Jun , 2012 7:19 pm
hummer_info: 2002 H1 hummer open top diesel

Re: Oil pressure

Post by mgaetajr » Fri 15 Jun , 2012 4:06 pm

Watched my oil pressure today as I was driving, at normal operating temp, while driving, oil pressure was between the 1/4 and 1/2 mark. At idle it is on the 1/4 mark, has been this way since new. Don't know if is normal or not.

mikefox
Posts: 22
Joined: Thu 24 Nov , 2011 8:48 pm
hummer_info: 1998 H1 6.5 TD

Re: Oil pressure

Post by mikefox » Fri 06 Jul , 2012 9:56 pm

I pulled off the connector off the top of the oil pressure switch and turned the key on and the oil pressure gauge went to the max and with the key on I reconnected it and it went back to zero which indicated the gauge was OK so I ordered a new oil pressure switch and changed it out today and now shes fixed. I read about 40psi.

Post Reply