[W126 Coupe] FW: a/c problems

[Dick Spellman]

Hugh,

DISREGARD my reference to PAG 150 Viscoity Oil for the Denso. The
replenishment I recently did (like 2-3 weeks back) was with PAG 46.

I used PAG 150 on the Harrison AC Delco (A-6) early SEC compressor years
ago.

So, if adding make-up oil for whatever the reason on a Denso, it's PAG 46.
Dick

On Tue, Jul 22, 2008 at 7:25 PM, Hugh MacGregor <hugh587 at hotmail.com> wrote:


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> ----- Original Message ----- *From:* Hugh MacGregor<hugh at badrockbikes.com>

> *To:* mb coupes <mbcoupes at mbcoupes.com>

> *Sent:* Tuesday, July 22, 2008 6:56 PM

> *Subject:* a/c problems

>

> *Hi All*

> *My 86 560sec was converted to 134a by the previous owner. Last summer I

> topped up the 134a charge and the a/c worked great. This year I did the same

> thing, high low pressures are in range, still the compressor won't come on.

> I looked back through the archives for tips , I jumped the pressure switch

> on the dryer at the R/H side of the radiator, the auxillary fan came on the

> compressor did'nt. I jumpered the 5&7 pin on the klima relay and yes the

> compressor kicked on. I swapped the klima relay with a good one and still no

> compressor. I see in the archives that Markus Meyer had a similar problem

> last year, I think he installed a new speed sensor on the compressor, but

> I'm not sure how to test it. Can anyone help me out! I'm roasting.*

> **

> *Hugh MacGregor*

> *86 560 sec*

>

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