[W126 Coupe] Overheating

[usef nazzal]

Jonathan the 1.1 kOhm is for the fans to start early? (are you trying to
reduce the overall resistance?) If yes what would be the new trigger temp?

Yousef

On Wed, Jul 6, 2011 at 4:25 AM, Jonathan Hodgman <jhodgman at gmail.com> wrote:


> **

> When was coolant flushed last?  How old is the radiator?  Is the system

> holding pressure?

>

> What shape is your fan clutch in?  Does the car over heat on the highway or

> @ traffic lights?

>

> If rad is old, replace it, new t-stat (whalers are best, I like to drill an

> extra hole to help bleed mine) flush out All the old coolant..  if you see

> much scale in there you'll want to citric acid flush the entire cooling

> system.

>

> Re-fill w/ a 40/60 coolant/water mix.  Add 2 bottles of Redline Water

> Wetter as well as a 1.1kohm resistor across the two pole aux fan temp

> sensor.

>

> Jonathan

>

>

>

>

> On 7/5/2011 6:13 PM, Camran Nassiri wrote:

>

>   My 1991 420SEL with 147,000 miles is overheating at about 89 degree

> outside temp.  I checked the auxiliary fan and it is working.  Would a new

> radiator solve the problem?  If not, any other ideas?  The synthetic oil has

> been changed every 5,000 miles and recently replaced ant-freeze and flushed

> the radiator.

>

> Thanks,

> Camran

> 91 420SEL, 80 240D

>

>

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>

>

>

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>




-- 
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Yousef Nazzal
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