STD Maintenance General ma heater aint so hot while on the highway :(

ma heater aint so hot while on the highway :(

ma heater aint so hot while on the highway :(

 
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randomdude
GT2256V

106
11-05-2011, 07:27 PM #1
any idea what this is? cruisin the strip downtown it works great, more than great actually. But runin at highway speeds it makes virtually NO heat. 1981 300DT.

Ideas? TIA!
This post was last modified: 11-05-2011, 07:31 PM by randomdude.

cars? what cars? WHERE???
randomdude
11-05-2011, 07:27 PM #1

any idea what this is? cruisin the strip downtown it works great, more than great actually. But runin at highway speeds it makes virtually NO heat. 1981 300DT.

Ideas? TIA!


cars? what cars? WHERE???

willbhere4u
Six in a row make her go!

2,507
11-05-2011, 08:39 PM #2
rebuild mono valve that was the problem in my dads car

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
11-05-2011, 08:39 PM #2

rebuild mono valve that was the problem in my dads car


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

sassparilla_kid
diesel > all other fuels

1,618
11-06-2011, 12:42 AM #3
Does the engine temp stay fairly constant?

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
11-06-2011, 12:42 AM #3

Does the engine temp stay fairly constant?


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

serverman777
GT2559V

226
11-11-2011, 09:35 AM #4
Im having this issue too. Its getting cold outside. I need to fix this. Rebuilding mono valve work?

'84 300 SD w126 Race Car Wink
'86 190E 2.3 w201 Daily Driver
'85 500 SEL w126 Scraped
'92 1.6 Geo Storm Totaled by a Uninsured Driver
serverman777
11-11-2011, 09:35 AM #4

Im having this issue too. Its getting cold outside. I need to fix this. Rebuilding mono valve work?


'84 300 SD w126 Race Car Wink
'86 190E 2.3 w201 Daily Driver
'85 500 SEL w126 Scraped
'92 1.6 Geo Storm Totaled by a Uninsured Driver

willbhere4u
Six in a row make her go!

2,507
11-11-2011, 10:18 AM #5
It did on my dads car he got the rebuild kit off eBay for like $40 It's the heater valve on the firewall behind the intake manifold by the battery

This will only fix the heat if you engine is running at the correct temperature!

If you engine is running cold check your thermostat first
This post was last modified: 11-11-2011, 10:18 AM by willbhere4u.

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
11-11-2011, 10:18 AM #5

It did on my dads car he got the rebuild kit off eBay for like $40 It's the heater valve on the firewall behind the intake manifold by the battery

This will only fix the heat if you engine is running at the correct temperature!

If you engine is running cold check your thermostat first


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

serverman777
GT2559V

226
11-11-2011, 10:50 AM #6
Well its running at 100C most of the time. I know its a little hot, but I really don't care that much in the winter.
Ok found the "how to" for my car "w126" http://mbz.org/articles/hvac/plumbing/monovalve/
Im to cheap to spent 40 bucks. Im just going to pull it off my parts car. Hope they are the same (parts car is a 500 SEL, and the car that Im having the issue with is a 300 SD)
This post was last modified: 11-11-2011, 11:02 AM by serverman777.

'84 300 SD w126 Race Car Wink
'86 190E 2.3 w201 Daily Driver
'85 500 SEL w126 Scraped
'92 1.6 Geo Storm Totaled by a Uninsured Driver
serverman777
11-11-2011, 10:50 AM #6

Well its running at 100C most of the time. I know its a little hot, but I really don't care that much in the winter.


Ok found the "how to" for my car "w126" http://mbz.org/articles/hvac/plumbing/monovalve/
Im to cheap to spent 40 bucks. Im just going to pull it off my parts car. Hope they are the same (parts car is a 500 SEL, and the car that Im having the issue with is a 300 SD)


'84 300 SD w126 Race Car Wink
'86 190E 2.3 w201 Daily Driver
'85 500 SEL w126 Scraped
'92 1.6 Geo Storm Totaled by a Uninsured Driver

willbhere4u
Six in a row make her go!

2,507
11-11-2011, 11:05 AM #7
It's worth a try I would think it would be the same on all US model w126s

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
11-11-2011, 11:05 AM #7

It's worth a try I would think it would be the same on all US model w126s


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

serverman777
GT2559V

226
11-11-2011, 11:23 AM #8
Well lets just hope so, fingers crossed!

'84 300 SD w126 Race Car Wink
'86 190E 2.3 w201 Daily Driver
'85 500 SEL w126 Scraped
'92 1.6 Geo Storm Totaled by a Uninsured Driver
serverman777
11-11-2011, 11:23 AM #8

Well lets just hope so, fingers crossed!


'84 300 SD w126 Race Car Wink
'86 190E 2.3 w201 Daily Driver
'85 500 SEL w126 Scraped
'92 1.6 Geo Storm Totaled by a Uninsured Driver

serverman777
GT2559V

226
11-11-2011, 07:19 PM #9
[img][Image: NfS1H.jpg][/img]
Looks like there was a rip in mine. Changed it out just fine Thanks for the help! Smile

'84 300 SD w126 Race Car Wink
'86 190E 2.3 w201 Daily Driver
'85 500 SEL w126 Scraped
'92 1.6 Geo Storm Totaled by a Uninsured Driver
serverman777
11-11-2011, 07:19 PM #9

[img][Image: NfS1H.jpg][/img]
Looks like there was a rip in mine. Changed it out just fine Thanks for the help! Smile


'84 300 SD w126 Race Car Wink
'86 190E 2.3 w201 Daily Driver
'85 500 SEL w126 Scraped
'92 1.6 Geo Storm Totaled by a Uninsured Driver

randomdude
GT2256V

106
12-31-2011, 04:08 PM #10
hey guys! havnt had the 'net 4 quite a while but thanks 4 the replys!

cars? what cars? WHERE???
randomdude
12-31-2011, 04:08 PM #10

hey guys! havnt had the 'net 4 quite a while but thanks 4 the replys!


cars? what cars? WHERE???

zacharias
Naturally-aspirated

16
01-03-2012, 05:07 PM #11
(11-11-2011, 11:23 AM)serverman777 Well lets just hope so, fingers crossed!

Indeed. A word of warning: the genuine Bosch rebuild kits are apparently out of stock in some areas.

There is another brand (sorry I forgot the initials, something like ATP) available but be warned some people are saying the insert only lasts a few months.

I found this out after I did mine with the other brand, about a month ago, of course Blush
zacharias
01-03-2012, 05:07 PM #11

(11-11-2011, 11:23 AM)serverman777 Well lets just hope so, fingers crossed!

Indeed. A word of warning: the genuine Bosch rebuild kits are apparently out of stock in some areas.

There is another brand (sorry I forgot the initials, something like ATP) available but be warned some people are saying the insert only lasts a few months.

I found this out after I did mine with the other brand, about a month ago, of course Blush

 
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