The Diesel Garage banner

1 - 9 of 9 Posts

·
Member
Joined
·
763 Posts
Discussion Starter #1
So I have a 6.0L 2004 (late 2004) that is running fine. I was driving home and the check gauge light flipped on while sitting at idle at a stoplight. Noticed that my oil pressure gauge which is always right in the middle dropped to none at idle. I hit the gas pedal and the pressure returns to normal according to the gauge and the check gauge light switches back off. Then at idle flips back on again and pressure drops??

It has been hard to start the past 2 days, taking 2 attempts to turn over. 1st time it just cranks and cranks, 2nd time it cranks then fires and runs fine.

1 week ago I was stopped at a light and the truck just died, threw it in park, and it started back up again, didnt really think much of it at the time.

Another issue that happened this past week is the A/C is blowing hot air and smells bad (never smelt before), I dont see how the 2 can be related (figure its just the a/c needing freon or whatever) but just incase keep that in mind if something could be effecting the both of them.

No check engine lights or anything else going on from a diagnostic stand point.

Batteries are fine, Alternator just replaced 6 months ago (brand new) FICM has been resoldered about a year and a half ago. All other dash gauges appear to be normal. Oil level is fine.

Any sugestions on where to begin, praying its not the high pressure oil pump. Maybe ICP Sensor or Injection Pressure Regulator Valve? Does this sound like the right path?


Thanks in advance.
 

·
Member
Joined
·
1,213 Posts
using OEM Ford oil filter along w/ an OEM filter cap?
 
  • Like
Reactions: codyr6

·
Member
Joined
·
763 Posts
Discussion Starter #3
Yea motorcraft and the oil filter is the one that u drop into the canister on the top of the engine. No change from original stock housing component if thats what you are asking. Oil and filter change is due its been about 6500 miles but the oil doesnt look awful and its still at the full mark onthe dipstick.

Still taking 2-3 trys to fire up. Runs good when on. Just says no oil pressure at idle. Still no check engine lights either.
 

·
Member
Joined
·
763 Posts
Discussion Starter #4
Ok today In the light. Went and took oil cap off and looked at the oring filter and made sure it was still sealed properly. Everything appears fine with that.

Got under the truck and saw fair bit of where oil was dripping down the oil pan onto transmission. Checked the oil and it says level is still max. I tried both with truck on and off. Had my buddy give it gas too while under it to see if maybe I could visually figure out where it is leaking from and how fast. Could not really see any one specific area that was actively leaking. Would have to be a pretty slow leak though im not even seeing any oil drips in the spot I park in everyday. Maybe the seal In the oil pan, the bolt was on fine checked that obviously?

Still no check engine light. No codes either. Being a pain to start though, and no oil pressure according to the gauge at idle. Wouldnt the check engine light be on for sonething as hpop or even the icp or ipr?
 

Attachments

·
Senior Member
Joined
·
1,324 Posts
A lot of us have a slow leak like that. You need to pick up a Scangauge 2 to get some vitals. The oil pressure sensor is just a switch it could be bad. Need to see what the ICP and IPR values are while cranking.
 
  • Like
Reactions: codyr6

·
Senior Member
Joined
·
3,051 Posts
You may have a failed low pressure oil pump issue developing, I certainly hope not, but check this thread I started awhile back, there are pics a few posts down on the first page.
http://www.thedieselgarage.com/forums/showthread.php?t=119937&highlight=failed+cam+follower

You may also have a bad oil pressure switch connection, but one easy way to check it is to just ground the switch and see if the gauge moves. It normally kicks the gauge on at 6psi oil pressure and drops to zero when below 5psi. But since you have accompanying hard start symptoms, it's unlikey you have a bad gauge and also a bad hpop, as the low pressure pump directly feeds the hpop and without enough low pressure oil feed the hpop starves for oil pressure build up.

Check your ICP and IPR pressures too, this will give you an indication or confirmation of what may be going on.

Harry
 
  • Like
Reactions: codyr6

·
Member
Joined
·
763 Posts
Discussion Starter #7
Finally got a code. P0611. Ficm code I believe. Had the same one last major issue when I had to have the ficm resoldered. Still no oil pressure though at idle and only wants to start on 2nd n 3rd attempts when im giving it gas.
Any additional thoughts?
Would a ficm have anything to do with oil pressure being low?
 

·
Member
Joined
·
1,213 Posts
No connection between the FICM code and no oil pressure on the dash gauge.

Take the oil filter out, depress the oil drain valve, and crank - see how quickly the oil filter housing fills. Since your engine will start, I would pull the FICM relay before conducting the test - just as a precaution.

19417 2003-2007 F-SUPER DUTY/2003-2005 EXCURSION 6.0L - WATCH FOR OIL FLOW FROM THE BASE ENGINE OIL PUMP
SOME 2003-2007 F-SUPER DUTY AND 2003-2005 EXCURSION VEHICLES EQUIPPED WITH A 6.0L DIESEL MAY EXHIBIT LOW BASE ENGINE OIL PRESSURE CAUSED BY A LEAK IN THE HIGH PRESSURE OIL SYSTEM. IF A HIGH PRESSURE SYSTEM LEAK IS SEVERE, THE HIGH PRESSURE PUMP MAY USE A LARGER VOLUME OF OIL THAN THE BASE ENGINE (GEROTOR) PUMP CAN PRODUCE WHILE CRANKING. IF BASE ENGINE OIL PRESSURE IS LOW, REMOVE OIL FILTER, HOLD DOWN THE OIL DRAIN VALVE (LEFT SIDE OF HOUSING) WITH A SCREWDRIVER AND CRANK THE ENGINE WHILE WATCHING FOR OIL FLOW FROM THE BASE ENGINE OIL PUMP. IF FLOW IS PRESENT, USE THE UPDATED DIAGNOSTICS FOR THE HIGH PRESSURE OIL SYSTEM (ELECTRONIC VERSION OF PC/ED, SECTION 4, STEP 10E). IF THERE IS NO FLOW AT THE OIL FILTER HOUSING DIAGNOSE THE BASE ENGINE OIL SYSTEM FIRST (WORKSHOP MANUAL SECTION 303-01C).
EFFECTIVE DATE: 10/06/2006
 
1 - 9 of 9 Posts
Top