Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    
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
Mo (guest)
Guest
 
Posts: n/a
Hi All,

I need some advice for my 1995 Bmw E34 540i V8 and hope someone can help me as I have been given different opinions and need a reliable source to lead me in the right direction.

My 540i used to be perfect until about 2/3 weeks ago where I started to notice my heater playing up. It took ages for it to blow out hot or warm air through the vents. I checked the coolant level and all is fine and well. No loss of water or coolant. now its got to a stage where it only blows out cold air. I have tried tapping the heater valve but didn't help until out of frustration, I hit the highway and put my FOOT DOWN and what do I feel blowing against my face... hot air through the vent ! I was pleased but as soon as I stopped, the air went ice cold again. the temp needle has always stayed between the 1/4 or middle and never above.

I have had someone tell me to buy a new heater valve , a thermostat, a new heater hedgehog etc. and to be honest, before I spend a penny, I want to be led in the right direction as I have learnt from my previous mistakes and just fired into everything in my old E34 without thinking twice and spent a lot of ...

can anyone please give me some advice as to what's happening here... it will be greatly appreciated.

Kindest Regards and Seasons Greetings.

__________________
This post was auto-generated based upon a question asked on our tech article page here:
Old 12-21-2013, 02:02 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #1 (permalink)
Moderator
 
Join Date: Jul 2012
Posts: 3,241
This does sound like a low coolant flow problem. You can check the temp of the coolant going into and out of the heater valve. if it cools off going out, with the heater on, this would indicate a faulty valve.

You could also have a restricted heater core or a faulty water pump.

- Nick
Old 12-21-2013, 02:02 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #2 (permalink)
Old 12-21-2013, 02:02 PM
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 



All times are GMT -8. The time now is 03:55 AM.


 
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.