GQ Low oil pressure
Submitted: Monday, May 26, 2003 at 15:54
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Linga Longa
When I
Park my GQ patrol TD42 diesel down
hill and leave it for a 1 hour plus it takes approx 7-10 seconds to being the oil pressure up. I use genuine nissan oil filters an shell super diesel. Oil and filters are changed every 5000 klm
On level ground or the vehicle facing backwards the pressure comes up 2-3 seconds (normal)
LL
Reply By: crowe - Monday, May 26, 2003 at 16:13
Monday, May 26, 2003 at 16:13
LL,
yes
mine does that also, but generally the light goes out before 7-8 seconds when compared to the normal 2-3 seconds. I assumed it was due to the angle of the dangle, horizontal oil galleries within the motor maybe draining back to the sump therefore taking a longer time to re prime to operating pressure. I would think the oil pickup in the sump will be still
well below oil surface level even on the steepest of hills.
Where the oil filters screw on to the block there are little ball bearing creatures which i assume are part of a one way valve/antidrain mechannism. Maybe this could be your problem..... some oil draining back through the filters but then one would assume this would happen all the time, not just on hills.
Anyone else have some ideas? ihave alwyas been puzzled by it but not enough to stress.
AnswerID:
21097
Follow Up By: Member - ADRIAN- Tuesday, May 27, 2003 at 00:46
Tuesday, May 27, 2003 at 00:46
the ball brgs are bypass valves in case the filters block press. diff allows oil tobypass filter straight to eng.
FollowupID:
13720
Reply By: David N. - Monday, May 26, 2003 at 16:33
Monday, May 26, 2003 at 16:33
LL,
mine does seem to do the same every now and then....
I recently fitted a VDO full scale oil pressure gauge as the factory (electric) one is nearly useless. As a result am now happy that my idle and at revs oil pressure is excellent. Haven't noticed the problem since... , but also don't
park facing down
hill very often.
Sorry not much help I know.
AnswerID:
21100
Follow Up By: John - Monday, May 26, 2003 at 20:42
Monday, May 26, 2003 at 20:42
GQ Patrols have a known problem od faulty or inacurate ol pressure senders.
John
FollowupID:
13685
Reply By: Truckster (Vic) - Monday, May 26, 2003 at 23:31
Monday, May 26, 2003 at 23:31
It would seem that the oil is going away from the pickup when downhill.... thus when facing the other way, it is covering the oil pickup, and only taking 2 seconds to get through. Half fill a glass with
water, put a straw in it, tip it one way the straw is nearly out of the
water, tip the cup the other way its got no change of getting air...
the oil senders do suck, $90 to replace from Nissan, but I did
mine, no problems since. I also use Nissan filters.
DONT use COOPERS oil filters, takes 10+ seconds to get oil pressure on the gauge!!!
AnswerID:
21171
Reply By: Member - Martyn (WA) - Tuesday, May 27, 2003 at 14:53
Tuesday, May 27, 2003 at 14:53
Same Same, I change oil every 5k and filters every 10k, oil pressure is dubious to say the least, the needle moves when driving along @ a constant speed just for the hell of it seems, spoke to Nissan and as others say they told me not to worry about it, "senders are not the best, as longs as it moves your right" was the answer I got. I checked my balls out in the filter assy and all appeared
well there as
well, thank goodness...... ho ho Keep the shiny side up
AnswerID:
21207
Follow Up By: Member - Michael - Wednesday, May 28, 2003 at 04:27
Wednesday, May 28, 2003 at 04:27
Hope the filter was not hot when you checked your balls.Blisters could scar lol MikeGotta get out there. Debbie and Mike
FollowupID:
13839