PT Cruiser Forum  
Advertisements
       

Go Back   PT Cruiser Forum > 2.4L Turbo Forums > Turbo Performance

PT Cruiser Forum

Advertisements
low oil pressure after warm up

 
Like Tree6Likes

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 27 May 2016, 02:30 pm
Fresh Cruiser
 
Join Date: Apr 2016
Posts: 8
Default low oil pressure after warm up

my car only has 90,000 miles and its hitting 1-3 psi of oil pressure at idle after warming up. on a cold start it will hit 75psi and then slowly go down.
its not the sensor because i installed a mechanical oil pressure gauge to get these readings. please help with any ideas. hoping its not the oil pump or bearings.
Reply With Quote
  #2 (permalink)  
Old 27 May 2016, 03:17 pm
Senior Cruiser
 
Join Date: Jan 2014
Location: SW PA
Posts: 1,336
Default Re: low oil pressure after warm up

[QUOTE=ian18206;611597]my car only has 90,000 miles and its hitting 1-3 psi of oil pressure at idle after warming up. on a cold start it will hit 75psi and then slowly go down.
its not the sensor because i installed a mechanical oil pressure gauge to get these readings. please help with any ideas. hoping its not the oil pump or bearings.[/QUOTE

Were there regular oil changes? Bearings and oil pump are all thats left. I think there is a relief spring in the pump,but if it were bad I doubt you would get 75lbs to start.
The bearings for the cams are part of the head casting. Run it low on oil and there is little to no oil going to the cam.
__________________
Addicted to Mopar You can tell how old I am..
65 Dodge Coronet 6 cyl 2dr Post
66 Ply Satellite with 273 engine swap to 69 340 4spd
70 340 4spd Dart Swinger "Those were the days my friend"
73 Charger SE
Had a few Vetts on the way 69, 85
Several Neons some flips
01 Sebring flip
Cruiser's 01, 220K Gone to a new home
Cruiser 03 133K Gone to a new home
Cruiser 06 110K Project Gone to new Home
Cruiser 05 Ltd 120,809 bought with broken belt Oct2015
May 16 Resurrected to once again roam the streets.

20 Miles South Of Pittsburgh
Reply With Quote
  #3 (permalink)  
Old 27 May 2016, 04:07 pm
Handy_Cruiser's Avatar
Obsessed Cruiser
 
Join Date: Oct 2013
Location: Arkansas
Posts: 10,279
Default Re: low oil pressure after warm up

Quote:
Originally Posted by ian18206 View Post
my car only has 90,000 miles and its hitting 1-3 psi of oil pressure at idle after warming up. on a cold start it will hit 75psi and then slowly go down.
its not the sensor because i installed a mechanical oil pressure gauge to get these readings. please help with any ideas. hoping its not the oil pump or bearings.
Where on the engine did you mount the hose for the mechanical gauge? Also, I believe you should be getting a check engine light around 4 psi at the sending unit on the back of the block. And what weight of oil are you using?
__________________
Reply With Quote
  #4 (permalink)  
Old 27 May 2016, 05:01 pm
NitroPT's Avatar
Obsessed Cruiser
 
Join Date: Jun 2012
Location: USA kalyfornia
Posts: 15,665
Default Re: low oil pressure after warm up

^^^^^ Every thing except the weight question. Unless it was for data information to add to a list of what PT Cruiser owners use for engine oil?

W=winter
__________________
To view larger pictures simply "click " on the picture!

Dalai Lama
"Share you knowledge. It's the best way to achieve immortality."
ASE MASTER TECHNICIAN
Reply With Quote
  #5 (permalink)  
Old 28 May 2016, 05:36 pm
2step's Avatar
Senior Cruiser
 
Join Date: Oct 2004
Location: New Braunfels, Texas.
Posts: 1,672
Default Re: low oil pressure after warm up

As I recall, the Cruiser does seem to have a slightly lower pressure than I'm normally comfortable with. I like to see 30psi +/- warmed up but not with Cruisers it seems, especially at the head. 1 to 3 psi is seriously low and needs to be addressed right away. A new gauge doesn't mean it's a good gauge. It's free or cheap to buy or borrow a proven one that's known to read accurately. The "borrowed" gauge can be laying in your lap. It doesn't need to be mounted anywhere. If you get conformation of the low pressure, there something wrong that needs attention before you toast the engine.

You sound like you have a bit of experience but a skilled mechanic, such as Nitro (posting above), is your best bet. Asking questions on a forum is a crap shoot.
Reply With Quote
  #6 (permalink)  
Old 28 May 2016, 07:09 pm
Veteran Cruiser
 
Join Date: Aug 2015
Location: Lake Wales, FL
Posts: 4,714
Default Re: low oil pressure after warm up

Maybe a can of Seafoam in the crankcase for a day or two, then an oil and filter change will help. You might just have some crap built up in the oil galleries and rings. Cheap enough to try.
__________________


Aspire to inspire before you expire.
Reply With Quote
  #7 (permalink)  
Old 10 Aug 2016, 03:11 am
gschnu's Avatar
Fresh Cruiser
 
Join Date: Jul 2008
Location: Austria/Europe
Posts: 41
Default Re: low oil pressure after warm up

Quote:
Originally Posted by NitroPT View Post
^^^^^ Every thing except the weight question. Unless it was for data information to add to a list of what PT Cruiser owners use for engine oil?

W=winter
I use 0W-40 (Castrol Edge) since 80k miles .. and now have a similar Problem!
I have no pressure gauge istalled, but oil pressure light comes on at idle when the engine has warmed up. It goes out when the engine revs 1200rpm an higher and comes on again at idle.
I change engine oil and filter every 10000 kilometers (6000mls).

May be I have bought a "faked" engine oil or filter? Might be the oil pump is damaged?
Any ideas, please (and excuse my bad English)!
__________________
2003 PT Cruiser GT 2.4 t, black w/ silver roof, Hurst equipped
Reply With Quote
  #8 (permalink)  
Old 10 Aug 2016, 05:28 am
Veteran Cruiser
 
Join Date: Aug 2015
Location: Lake Wales, FL
Posts: 4,714
Default Re: low oil pressure after warm up

gschnu, have you tried replacing the oil sending unit? They DO go bad sometimes. I'd start with that. If you don't hear any knocking or tapping from the engine, I doubt that it's the bearings or oil pump.
__________________


Aspire to inspire before you expire.
Reply With Quote
  #9 (permalink)  
Old 10 Aug 2016, 05:55 am
gschnu's Avatar
Fresh Cruiser
 
Join Date: Jul 2008
Location: Austria/Europe
Posts: 41
Default Re: low oil pressure after warm up

Oil sending unit has already been changed as a verdict for the red light.... It once came on for a very short moment approx. 2000 miles ago. Then everything seemed to be ok but since 30 miles the warning light always lights when the engine is warm.
It first happened after the latest oil change.
__________________
2003 PT Cruiser GT 2.4 t, black w/ silver roof, Hurst equipped
Reply With Quote
  #10 (permalink)  
Old 10 Aug 2016, 06:12 am
Veteran Cruiser
 
Join Date: Aug 2015
Location: Lake Wales, FL
Posts: 4,714
Default Re: low oil pressure after warm up

I don't know the climate where you are, but that sure seems like an awfully LIGHT weight oil. I have an 03 GT Turbo that I run 10W-40 weight oil in. Of course, here in Florida where I am, the temperature rarely gets below 45 degrees F (not Celcius) and is usually in the mid 90's in the summer. I'd suggest a heavier oil and see what happens.
__________________


Aspire to inspire before you expire.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Warm Air from A/C vents PGBCruiser General PT Cruiser Discussions 16 17 Feb 2015 06:39 pm
A/C reads NO Pressure, blows warm, no fan turning, no compressor kick on flafishergal General PT Cruiser Discussions 9 30 Apr 2014 05:09 pm
A/C blows warm air klepto7 General PT Cruiser Discussions 4 20 Jun 2013 12:04 pm
AC blows warm lilredpt Tech & Performance Forum 10 19 Jul 2011 01:08 pm
Warm A/C TaylorMade General PT Cruiser Discussions 5 12 Jul 2004 10:25 am


All times are GMT -5. The time now is 10:40 pm.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors