Rough Cold Start :/
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Senior Member
Joined: Jul 2007
Posts: 488
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From: San Mateo, CA
In search of W222
Rough Cold Start :/
Sooo before I take it into the shop i wanna see if you guys have any predictions as to what might be causing this intermittent Check Engine light.
When i turn my car on (cold start or if its been sitting for more than 30mins)
the startup idle will be rough.
It'll almost mini rev up about 250rpms, UpdownUpdownUpdown.. Even f i give it gas, itll be shaky and nonconstant rpms.
I turn of the Car after this happens (check engine light now on)
I then restart it, it turns on, the revs idle to park-no problems.. a couple hours later the Check engine light goes away.
SOmetimes this causes the car to idle and shake more violently (making the car vibrate almost)
But no REAL problems so far, and it has happened like 20times...
Im guessing maybe MAF?
Thanks guys
When i turn my car on (cold start or if its been sitting for more than 30mins)
the startup idle will be rough.
It'll almost mini rev up about 250rpms, UpdownUpdownUpdown.. Even f i give it gas, itll be shaky and nonconstant rpms.
I turn of the Car after this happens (check engine light now on)
I then restart it, it turns on, the revs idle to park-no problems.. a couple hours later the Check engine light goes away.
SOmetimes this causes the car to idle and shake more violently (making the car vibrate almost)
But no REAL problems so far, and it has happened like 20times...
Im guessing maybe MAF?
Thanks guys
