Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    
  We salute a legendary member of the community.
Thank you for selflessly sharing your wisdom with us...
Go Back   Pelican Parts Technical BBS > 2- BMW Forums > BMW Technical Forums > 101 Projects Discussion Forum: BMW 3-Series

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Junior Member
 
Join Date: Apr 2007
Posts: 2
'95 318i still overheating! Any suggestions?

So here's the deal: last week my '95 318i would overheat while driving in city traffic, but was fine on the freeway (it would leak/steam from the bottom of the overflow tank part of the radiator). Following the easy-to-follow directions in the 101 Performance Projects book, I replaced the radiator, water pump, thermostat, and belts. (Removing the water pump was akin, I imagine, to giving birth.)

I drove it for the first time today and, now it overheats (steam spews from around the thermostat housing) on the freeway but is a little better in city traffic - it takes longer to overheat. Is there another piece that I neglected to replace? I should note that the heater does not blow hot air. Any help/suggestions would be greatly appreciated.

BTW, just to make sure, when I replaced the thermostat, I pointed the engraved arrow to point up. That's right, I assume?
Old 04-30-2007, 01:19 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Apr 2007
Posts: 12
Might be a blown head gasket, that would cause excess pressure into the collant and apear to overheat. Does the temp gauge show hot. Did you perge the rad of air. Might be that you have installed the new termostat in backwards .. easy to do...
__________________
1993 bmw 318I coupe
Old 04-30-2007, 07:24 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #2 (permalink)
Moderator
 
Jeron's Avatar
 
Join Date: Feb 2004
Location: DFW (Hurst), Texas
Posts: 4,724
Garage
Backward thermo maybe.

But, steam from around the thermo housing sounds like the gasket isn't sealing. If it doesn't seal then you cant get pressure and without pressure the coolant will boil. Also, make sure you bleed the system of air thoroughly and correctly.
__________________
HPDE Instructor (BMW / PCA / Apex)
Here: 1997 M3/4 Byzanz/Magma ~ 2001 330i Silver/Grey ~ 1997 R1100RT ~ 1991 Ford F-150 5.8l
Gone: :'( 98 Camry V6 97 Camry I4 97 Mazda 626 I4 :'(93 Sentra SE-R 88 Toyota Truck I4
Old 05-01-2007, 06:40 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #3 (permalink)
Junior Member
 
Join Date: Apr 2007
Posts: 2
Thanks for the advice, Jeron. I re-sealed the thermo housing with a sealant specifically designed for water pumps and thermostat housings (a few bucks more, but worth it for peace of mind). I also bled the cooling system of air. No more overheating!!!
The obvious sign was the fact that the heater didn't blow hot air. It does now. Thanks again.
Old 05-04-2007, 09:41 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #4 (permalink)
Moderator
 
Jeron's Avatar
 
Join Date: Feb 2004
Location: DFW (Hurst), Texas
Posts: 4,724
Garage
No heater is a sign of air in the system but you had air because of a leaking thermo gasket rather than just a bad bleed.
__________________
HPDE Instructor (BMW / PCA / Apex)
Here: 1997 M3/4 Byzanz/Magma ~ 2001 330i Silver/Grey ~ 1997 R1100RT ~ 1991 Ford F-150 5.8l
Gone: :'( 98 Camry V6 97 Camry I4 97 Mazda 626 I4 :'(93 Sentra SE-R 88 Toyota Truck I4
Old 05-04-2007, 09:47 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #5 (permalink)
Old 05-04-2007, 09:47 AM
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 10:21 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.