S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

hessitation in my baby girl 2000 s class 430

Old Feb 23, 2008 | 11:47 PM
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f2daizm's Avatar
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hessitation in my baby girl 2000 s class 430

kind of new to the boards i asked questions before but i haven't been here in a long time...............................anyway the other day my check engine light came on i hooked my scanner up and the codes i dont remember but it said my fuel was to rich and or lean. today i pulled off of my parking pad low and behold my car started hessitating then it took off...but i noticed it didn't have the power it once had. do you guys have any ideas? i'm thinking its time for a tune-up i'm approaching 120,000 miles.
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Old Feb 24, 2008 | 11:29 AM
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my06clk's Avatar
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04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
Originally Posted by f2daizm
kind of new to the boards i asked questions before but i haven't been here in a long time...............................anyway the other day my check engine light came on i hooked my scanner up and the codes i dont remember but it said my fuel was to rich and or lean. today i pulled off of my parking pad low and behold my car started hessitating then it took off...but i noticed it didn't have the power it once had. do you guys have any ideas? i'm thinking its time for a tune-up i'm approaching 120,000 miles.
There is no such thing as a "Tune UP" on many cars these days.. but you could have a bad accelerator pedal module, or in the case of the light your MAP sensor could be bad. You can't rely 100% on codes unless you do some troubleshooting. Many times there might be something going on that will throw a code for something else. Especially codes related to fuel since the fuel/air mixture is controlled by so many other elements. Could be something as simple as a bad fuel filter.

Either way my advise would be to take it in, pay the $98.00 and get a true opinion on what the porblem is and take it from there.

When ever you post a "what do you guys think it is" question on a forum you will get a million different answers including mine...

Last edited by my06clk; Feb 24, 2008 at 04:34 PM.
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Old Feb 24, 2008 | 03:06 PM
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From: Lawrence, KS (USA)
S500/W220/2000
It is probably your MAF sensor. A couple articles might help...

http://www.aa1car.com/library/2003/cm70336.htm

http://www.answers.com/topic/mass-flow-sensor

I'd see the dealer. Let us know what happens...
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