Here's the problem. When the car is started cold, it idles about 1200 rpm or so. then it will settle down and idle about 500-600 RPM. If you shut the car off and then start it warm, it goes to around 1800-2000 RPM and will not idle down until you drive it. After driving it at highway speeds, when you exit the highway, it will die when you let it come down to idle, but after you start it, it is fine for the rest of the time you are driving it in the city. Danged if I can figure it out. Any ideas?

__________________
83 W123 240D
76 300D, "Lil Yellow Car"
1978 Cessna 172N 180 HP Mod

"If life ain't fun, I'm not interested"

The important things are those that you learn after you know it all.
Chip Foose

Build a better mousetrap and you will REALLY infuriate corporate america.

checked the OVP relay!!! look like this relay cause this problem

Thanks, I'll try that.

__________________
83 W123 240D
76 300D, "Lil Yellow Car"
1978 Cessna 172N 180 HP Mod

"If life ain't fun, I'm not interested"

The important things are those that you learn after you know it all.
Chip Foose

Build a better mousetrap and you will REALLY infuriate corporate america.

I purchased a new OVP relay. When i went to the place the book says it is supposed to be. (In the fuse box), there is an open slot there with no connectors in it and six holes. The OVP, the parts place sent me has 9 pins and a bracket to bolt it to something. Where does this thing go? This is on an 89 190E 2.6.

__________________
83 W123 240D
76 300D, "Lil Yellow Car"
1978 Cessna 172N 180 HP Mod

"If life ain't fun, I'm not interested"

The important things are those that you learn after you know it all.
Chip Foose

Build a better mousetrap and you will REALLY infuriate corporate america.

Isn't it supposed to be behind the battery?

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

I'll look there.

__________________
83 W123 240D
76 300D, "Lil Yellow Car"
1978 Cessna 172N 180 HP Mod

"If life ain't fun, I'm not interested"

The important things are those that you learn after you know it all.
Chip Foose

Build a better mousetrap and you will REALLY infuriate corporate america.

Thanks guys, I found it. Now lets see if that makes any difference.

__________________
83 W123 240D
76 300D, "Lil Yellow Car"
1978 Cessna 172N 180 HP Mod

"If life ain't fun, I'm not interested"

The important things are those that you learn after you know it all.
Chip Foose

Build a better mousetrap and you will REALLY infuriate corporate america.