My 300E is finally running good after all the $$ i spent. Well I rarely use my A/C, but when I turned it on today my car started to miss. It misses about every 5 seconds. Well the idle rests at 500 rpm but when it starts to miss the idle fluctuates and peaks at 750 rpm, and it does not miss that much when in D(Drive), only when in P(park). This only happens with the A/C on, the miss causes a slight hesitation when comming from a stoplight.

I have replaced all vacuum lines

What could be the culprit???

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1987 mercedes 300E
1995 e320 conversion(hated the 300e grill)
HID/Xenon (D2S)
Keyless Entry
Monochromatic Paint (Custom Blue)
Smoked Tails
Flat Badged (front)
Debadged (rear)
custom "carbon fiber" console
18 inch HP EVO rims
Sold! Now I drive a Monte Carlo SS
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