300TE Air condition

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Aug 4, 2002 | 09:04 AM

peh

Thread Starter

Newbie

Joined: Aug 2002

Posts: 3

Likes: 0

From: Denmark

1988 W124 300TE

300TE Air condition

Hi. My A/C system looses pressure. The shop has performed a press. test and refilled it twice without finding any leak.
After 3 days the pressure is low and the system can't start.
Any ideas to why the shop can't find the leak or has anybody had similar problems. Are there any components in the system that are not tested when the engine is not running during the decay test?
Best regards
Peter

Aug 4, 2002 | 01:57 PM

Ron in SC

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Joined: Jun 2002

Posts: 237

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From: Charleston, SC

99 ML 320, 97 Porsche 993 C2S, 92 300E

300 E's are well known for having leaks in the evaporator coil. Don't know if that's your problem but if it is it's very expensive.

Aug 28, 2002 | 05:47 AM

bamberger_1

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Joined: Aug 2002

Posts: 1,005

Likes: 33

From: Germany

'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124

Re: 300TE Air condition

Quote:

Originally posted by peh
Hi. My A/C system looses pressure. The shop has performed a press. test and refilled it twice without finding any leak.
After 3 days the pressure is low and the system can't start.
Any ideas to why the shop can't find the leak or has anybody had similar problems. Are there any components in the system that are not tested when the engine is not running during the decay test?
Best regards
Peter

the shop has to add so called tracer liquids to the replacement coolant (or rather test with Nitrogen) in order to locate the leaks using a UV lamp. You need to run the AC for some time (2-3 days)However I expect this to become a pretty expensive project since in Europe you also have to replace the coolant from R12 to something free of FCCH (free of carbon hydrogens). My wild guess is arround $ 1.000.-

Good luck
Bambeger_1

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