Had the dealer replace my rear main seal, now oil pressure sucks. what to look 4
02-21-2011 | 03:48 PM
#16
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Joined: Jan 2011
Posts: 11
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Model: Cherokee
03-03-2011 | 09:03 AM
#18
Thread Starter
Junior Member
Joined: Nov 2010
Posts: 46
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From: NorCal
Year: 1991
Model: Cherokee
Engine: 4.0
so what happened was I took it back and the tech said the pick up tube thing could not have happened. He decided to try to isolate the noise and suspected something loose in the top end. Upon inspection he suggests with his 16 years of experiance that I have a bearing bad and should look for a new motor.
I am sick...and I have to drive it still....damn.
I'm considering pulling the pan this weekend and taking a look to see. Any suggestions?
I am sick...and I have to drive it still....damn.
I'm considering pulling the pan this weekend and taking a look to see. Any suggestions?
03-03-2011 | 09:23 AM
#19
Senior Member
Joined: Jan 2011
Posts: 801
Likes: 1
From: N. IL
Year: 2000
Model: Cherokee
Engine: 4.0
reading your post and follow ups by other members, seems to me like the following occured;
when the service department put things back together, the oil pick-up tube was not properly secured.
4 years ago I replaced my RMS myself, the job was not all that difficult other than breaking loose the oil pain from the motor when it was 29 degrees out in Florida.(brrrrr) and no garage. regardless,,,, I had gotten teh old seal out and the new one back in, cleaned out the oil pan real well (thank goodness there was no gunk or gook buildup! Valvoline baby!)......well, getting the pickup tube and strainer back on the oil pump assy was a bit of a trick as one cannot attach this unless you have the pan in place ready to bolt up etc etc...so when I attached the pickup assy I apparently did not secure it tight enough as a few mile down the road oil pressure went really low like you are experiencing. Knowing I had not removed anything else, I got back under it, drained oil, removed pan and sure enough one side of the pickup tube was loose and it was kinda wobbling in place. At least the bolts holding it on had not worked all the way out. sooooo,, I took them out cleaned them very well and put some loctite on them and torqued them down about 5 ft lbs more than required and let them sit for half a day before putting the pan back on. After that, no leak and my oil pressure is A-OK.....
just my experience sir, but me thinks the bolts are loose and the pump is getting air.
hope it helps!
cpnwrench
This is a dealer problem as was pointed out by other members here, and you should by all means get it back to them for fix.
when the service department put things back together, the oil pick-up tube was not properly secured.
4 years ago I replaced my RMS myself, the job was not all that difficult other than breaking loose the oil pain from the motor when it was 29 degrees out in Florida.(brrrrr) and no garage. regardless,,,, I had gotten teh old seal out and the new one back in, cleaned out the oil pan real well (thank goodness there was no gunk or gook buildup! Valvoline baby!)......well, getting the pickup tube and strainer back on the oil pump assy was a bit of a trick as one cannot attach this unless you have the pan in place ready to bolt up etc etc...so when I attached the pickup assy I apparently did not secure it tight enough as a few mile down the road oil pressure went really low like you are experiencing. Knowing I had not removed anything else, I got back under it, drained oil, removed pan and sure enough one side of the pickup tube was loose and it was kinda wobbling in place. At least the bolts holding it on had not worked all the way out. sooooo,, I took them out cleaned them very well and put some loctite on them and torqued them down about 5 ft lbs more than required and let them sit for half a day before putting the pan back on. After that, no leak and my oil pressure is A-OK.....
just my experience sir, but me thinks the bolts are loose and the pump is getting air.
hope it helps!
cpnwrench
This is a dealer problem as was pointed out by other members here, and you should by all means get it back to them for fix.
What he said ^^^. Pity the dealership tech would not take responsibilty and explaine why after their "service" your oil pressure dropped so much. Time to take matters into your own hands and check the pickup tube.
03-03-2011 | 09:41 AM
#20
Thread Starter
Junior Member
Joined: Nov 2010
Posts: 46
Likes: 0
From: NorCal
Year: 1991
Model: Cherokee
Engine: 4.0
should I buy a new one and replace it like stated before or do you think tightening it up will do the trick (assuming it it loose)
Also, if I find something wrong, how can I build a case and show evidence something they did was wrong? Right now its just my word vs theirs and if I take that pan off they will for sure blame me....
Also, if I find something wrong, how can I build a case and show evidence something they did was wrong? Right now its just my word vs theirs and if I take that pan off they will for sure blame me....
03-03-2011 | 10:09 AM
#22
Senior Member
Joined: Feb 2011
Posts: 719
Likes: 0
From: Bel Air, Maryland 21015
Year: 1995
Model: Cherokee
Engine: 4.0
so what happened was I took it back and the tech said the pick up tube thing could not have happened. He decided to try to isolate the noise and suspected something loose in the top end. Upon inspection he suggests with his 16 years of experiance that I have a bearing bad and should look for a new motor.
I am sick...and I have to drive it still....damn.
I'm considering pulling the pan this weekend and taking a look to see. Any suggestions?
I am sick...and I have to drive it still....damn.
I'm considering pulling the pan this weekend and taking a look to see. Any suggestions?
Did you ask him why he put a good seal in a bad motor ?
I would maybe seek out an opinion from a competing dealer.
If they replace the pickup tube and the pressure comes back to normal you might well have some recourse against the first dealer.
Of course of they change it and the pressure doesn't come back up... it's on you.
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