I have a big leak at my EHA valve on the side of the distributor. I replaced O-rings first, which did nothing. The ones I found in there were in great shape. I have a replacement valve, and can install it easily, but are there further adjustments that need to be made to the thing?? Are they adjustments ON the valve itself, or somewhere else? I've read some things about electronic adjustments or whatever.
I'm off to put the new one on and see if that prevents the leak.
Its a weeny allen head, I don't remember the size. Its accessed by removing the brass screw iirc. (On the EHA.)
Try it as is first, sometimes they seem to be right for the car already.
Adjusting mine took an age of driving, removing, adjusting. About 100 times in all maybe. Lol.. My car was hesitating and tiny clockwise increments helped.
Thanks for the tip. It was a quick install and everything has been running smoothly since then. Many weeks and a few hundred miles. No additional tweaking yet. No smelly exhaust or hiccuping, so in my amateur opinion it seems to be working great!
WOOKY, running the air? This is a Mercedes, not a Chevy! Rotate the temp wheel to middle of the dial, center push button depressed, center fan button depressed, set and forget except for windshield defrost or recirculate needed at times. I rotate the temp dial maybe a quarter of an inch all year long. In my opinion the climate system will function better if set and left alone. I think rotating the temp to max heat or way cold stresses things like mono valve inserts and in dash vacuum elements causing their early demise.
Shouldn't really be any hesitation Wooky, unless the compressor was going very bad. There is the little bump in idle when the compressor engages, so you may feel that I suppose. 50rpm or so.
No no no, let me rephrase this. In the SUMMERTIME when the A/C is running (being used, in operation . . . :devil) when I stop at a light, if I don't "drive with two feet" to keep the idle rpm slightly elevated (just enough to see the needle rise a hair) when I hit the gas the car acts like it's starving for fuel, "playing with the pedal" gets ya going (the "knowing how to drive it" part, I'm sure your cars have their own "quirks" too). Down here in the South we usually use our A/C systems 9-10 months of the year or roast, even in the shade. I know about the thumbwheel but most times we have em running wide open (ever see the ice cubes flying :wink) When set on econ/vent I don't have this idle problem and isn't a big issue but thought I'd mention it. I'd have to look in the paperwork for exactly when but the A/C has been serviced and the compressor is not noisy at all and it blows cool air even on the hottest days almost immediately
I own a Chevy too and still trying to figure why that was mentioned :|
Sounds like you aren't getting the idle bump. Subject for a different thread if you like. But idle relay might be the culprit.
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