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minsk
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Joined: March 17, 2008
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Location: pittsburgh
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bluebus86
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Joined: September 02, 2010
Posts: 11075
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 Posted: Sat Sep 17, 2016 12:43 pm Post subject: Re: 88 2wd gettting hot fast. |
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| minsk wrote: |
all of a sudden my 88 wd is getting hot fast...like way past the light.
no coolant loss. good pressure. no leaks. no fan. ideas?
new heads and thermostat. older rad. heads have like 2k on them now.
replaced thermostat at the same time. rad is hot. so it appears the thermo is working . any other things i should be looking at. green resisitor maybe? |
the question is... Is it really getting hot? could it be a faulty gage or gage sender?
when you state "no fan" does that mean that the radiator fan does not come on dispite the high gage reading? assuming the fan switch is working fine, it points to maybe a gage fault.
Or if you mean by no fan that the fan now longer works, and you need it to prevent over heating, then try to jumper the fan switch to get it too run and see if she cools back to normal, if so, then trouble shoot the fan.
also do you have any other symptoms to indicate over heat? strange engine odors, loss of performance, etc...? does the engine feel hotter than normal?
good luck, hopefully it is simple like a gage sendor, or fan switch.
What did the tired vanagon say as she climbed the steep pass?
I think I van, I think I van! 
_________________
Help Prevent VW Engine Fires, see this link.....Engine safety wire information
Stop introducing dirt into your oil when adjusting valves ... https://www.thesamba.com/vw/forum/viewtopic.php?t=683022 |
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Wildthings
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Joined: March 13, 2005
Posts: 50351
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| Posted: Sat Sep 17, 2016 1:00 pm Post subject: Re: 88 2wd gettting hot fast. |
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| IR gun to check the temps thoughout the cooling system. You can also sprinkle water on the block to see if it boils or not. |
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AndyBees
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Joined: January 31, 2008
Posts: 2331
Location: Southeast Kentucky
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| Posted: Sat Sep 17, 2016 1:05 pm Post subject: Re: 88 2wd gettting hot fast. |
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Or, you can take a look at this Thread....
http://www.thesamba.com/vw/forum/viewtopic.php?t=658664
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'84 Vanagon Tin-top, ALH TDI. 1989 Tin-top
1983 Air-cool, 225k miles, 180k miles mine. Seven trips to Alaska from 1986 thru 2003. |
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Wildthings
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Joined: March 13, 2005
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| Posted: Sat Sep 17, 2016 3:00 pm Post subject: Re: 88 2wd gettting hot fast. |
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Electrically the 83-85 and 86+ Vanagon gauges and senders work differently. |
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AndyBees
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Joined: January 31, 2008
Posts: 2331
Location: Southeast Kentucky
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| Posted: Sat Sep 17, 2016 4:07 pm Post subject: Re: 88 2wd gettting hot fast. |
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| Wildthings wrote: |
Electrically the 83-85 and 86+ Vanagon gauges and senders work differently. |
Yep, and unless I missed something, this Thread and the link to the other Thread are both for 86+ Vanagons.
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'84 Vanagon Tin-top, ALH TDI. 1989 Tin-top
1983 Air-cool, 225k miles, 180k miles mine. Seven trips to Alaska from 1986 thru 2003. |
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Wildthings
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Joined: March 13, 2005
Posts: 50351
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| Posted: Sat Sep 17, 2016 7:35 pm Post subject: Re: 88 2wd gettting hot fast. |
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| AndyBees wrote: |
| Wildthings wrote: |
Electrically the 83-85 and 86+ Vanagon gauges and senders work differently. |
Yep, and unless I missed something, this Thread and the link to the other Thread are both for 86+ Vanagons. |
Strange, that is not the thread that opened when I originally clicked on your link.  |
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djkeev
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Joined: September 30, 2007
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Location: Reading Pennsylvania
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Wildthings
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Joined: March 13, 2005
Posts: 50351
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| Posted: Sun Sep 18, 2016 6:01 am Post subject: Re: 88 2wd gettting hot fast. |
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| djkeev wrote: |
I agree, pick up an infrared temp gun and see what temperatures you are running.
Shoot the thermostat housing, shoot various points on the radiator.
If they all fall at 180* +/- I'd investigate your low coolant probe and/or the gauge sending unit on the thermostat housing.
Dave |
Shooting the radiator with an IR gun can be pretty meaningless if the fan isn't running as with somewhat restricted flow the radiator will still reach close to engine temperature if there is no air flow through it to lower the temp of the coolant. |
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AndyBees
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Joined: January 31, 2008
Posts: 2331
Location: Southeast Kentucky
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| Posted: Sun Sep 18, 2016 9:24 am Post subject: Re: 88 2wd gettting hot fast. |
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Wildthings, I posted the link to the other Thread because I had raised it from archives due to a similar issue with my 1989 Vanagon.
Apparently the coolant level sensor has gone south!
When checking for coolant circulation, I feel of the two hoses at or near the radiator. The one from the engine will be much hotter than the return hose, assuming the water pump and T-stat are operating properly. Of course, a corroded Rad can affect flow.
Also, turning on the heater circulation can provide some good info.
I do admit I have very little experience with WBXER engines! I drove my '83 Air-cooled for 20 years (moth-balled now). I like the ALH TDI in my '84. Most all of the bugs have been put to rest with it. I am now focusing on the 89 to keep it OE for a while. The engine has 145k miles on it and seems to run strong!
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'84 Vanagon Tin-top, ALH TDI. 1989 Tin-top
1983 Air-cool, 225k miles, 180k miles mine. Seven trips to Alaska from 1986 thru 2003. |
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wesitarz
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Joined: August 20, 2012
Posts: 1491
Location: Victoria,B.C.Canada
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| Posted: Sun Sep 18, 2016 11:08 am Post subject: Re: 88 2wd gettting hot fast. |
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My 88 started showing rising temps on my VDO gauge from sensor inline just off the engine to the rad.More sensitive than the VW gauge.Turned out to be the blue expansion cap that I had decided to switch to an older one lying in my toolbox for some strange reason,then I forgot that I did it. Finally fixed it by switching it back. 
88 Wolfsburg Carat auto with 02 Subaru 2.5L |
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minsk
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Location: pittsburgh
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minsk
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