Wire harness,O2 sensors,Leaky cam sensors replaced, result: worse gas mileage!!!
Thread Starter
Newbie
Joined: Jul 2003
Posts: 18
Likes: 0
From: oc
MB C230K
Wire harness,O2 sensors,Leaky cam sensors replaced, result: worse gas mileage!!!
Hello everyone, I need everyone input on this issue I'm having with the stealership.
Two weeks ago I got the dreaded "Check engine light". Since my car is still under warranty (2003 C230 coupe w/ extended warranty) I did not worry about the cost.
So I took it to the stealership located in the beautiful South Bay, they found
leaky cam sensors, Bad O2 sensors,Engine wire harness, bad $12 dollar hose,after all said and done to my dismay, my car is been running worse(Miles/Gallons , city 16~20 Hwy 18~25) than before they replace all above mentioned items.
At the moment the car is back at the stearlership for this issue as well as for rough idle when cold. I got a phone message from the SA stating that they could not replicate or find any problems in regards to the poor gas mileage , but they will keep the car one more day to see if they can replicate the cold start rough idle.
Any input/ comments will be appreciated.
J.
Two weeks ago I got the dreaded "Check engine light". Since my car is still under warranty (2003 C230 coupe w/ extended warranty) I did not worry about the cost.
So I took it to the stealership located in the beautiful South Bay, they found
leaky cam sensors, Bad O2 sensors,Engine wire harness, bad $12 dollar hose,after all said and done to my dismay, my car is been running worse(Miles/Gallons , city 16~20 Hwy 18~25) than before they replace all above mentioned items.
At the moment the car is back at the stearlership for this issue as well as for rough idle when cold. I got a phone message from the SA stating that they could not replicate or find any problems in regards to the poor gas mileage , but they will keep the car one more day to see if they can replicate the cold start rough idle.
Any input/ comments will be appreciated.
J.
Last edited by jimboom; Feb 10, 2009 at 11:08 PM. Reason: add words
MBWorld Fanatic!
Joined: Jan 2006
Posts: 3,212
Likes: 8
From: Pasadena, CA
2002 C230K, 2013 BMW 328, 2015 BMW X5
Hello everyone, I need everyone input on this issue I'm having with the stealership.
Two weeks ago I got the dreaded "Check engine light". Since my car is still under warranty (2003 C230 coupe w/ extended warranty) I did not worry about the cost.
So I took it to the stealership located in the beautiful South Bay, they found
leaky cam sensors, Bad O2 sensors,Engine wire harness, bad $12 dollar hose,after all said and done to my dismay, my car is been running worse(Miles/Gallons , city 16~20 Hwy 18~25) than before they replace all above mentioned items.
At the moment the car is back at the stearlership for this issue as well as for rough idle when cold. I got a phone message from the SA stating that they could not replicate or find any problems in regards to the poor gas mileage , but they will keep the car one more day to see if they can replicate the cold start rough idle.
Any input/ comments will be appreciated.
J.
Two weeks ago I got the dreaded "Check engine light". Since my car is still under warranty (2003 C230 coupe w/ extended warranty) I did not worry about the cost.
So I took it to the stealership located in the beautiful South Bay, they found
leaky cam sensors, Bad O2 sensors,Engine wire harness, bad $12 dollar hose,after all said and done to my dismay, my car is been running worse(Miles/Gallons , city 16~20 Hwy 18~25) than before they replace all above mentioned items.
At the moment the car is back at the stearlership for this issue as well as for rough idle when cold. I got a phone message from the SA stating that they could not replicate or find any problems in regards to the poor gas mileage , but they will keep the car one more day to see if they can replicate the cold start rough idle.
Any input/ comments will be appreciated.
J.
Sounds like a MAF that needs to be cleaned.
Are your tires properly inflated? How many miles on the car, last spark plug change? Are all the Coil Packs good?
What model and year is your car?
Thread Starter
Newbie
Joined: Jul 2003
Posts: 18
Likes: 0
From: oc
MB C230K
Sorry I forgot to add the vitals of my car, 2003 C230 coupe M271 engine,with about 75 k miles.
Spar plugs have less than 500 miles on them. I figure if is a dirty MAF or a bad coil pack the stealership should be able to diagnose this problems, but they keep saying"unable to replicate problem ."what should I do?
Spar plugs have less than 500 miles on them. I figure if is a dirty MAF or a bad coil pack the stealership should be able to diagnose this problems, but they keep saying"unable to replicate problem ."what should I do?
MBWorld Fanatic!
Joined: Jan 2006
Posts: 3,212
Likes: 8
From: Pasadena, CA
2002 C230K, 2013 BMW 328, 2015 BMW X5
Did you get to read the plugs? That would have told you which cylinder was having the problem.
My only other thought would be that you could have a clogged air filter or catalytic convertor.
My only other thought would be that you could have a clogged air filter or catalytic convertor.
Thread Starter
Newbie
Joined: Jul 2003
Posts: 18
Likes: 0
From: oc
MB C230K
The air filter and spark plugs have less than 500 miles on them, that leaves the catalytic convertor, car is still at the dealer, My SA mentioned they needed to check the exhaust system, I'll update this tread once issue is solved.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 6,211
Likes: 2
From: Laguna Niguel, CA
Sounds like the notorious 2003 C230 problem with the poor head design that gets misfires after a while. See if they'll throw in a new head to fix the problem. Also, if you have an auto trans, have them check if it's a Valeo radiator as those will destroy your tranny when they leak internally.
Thread Starter
Newbie
Joined: Jul 2003
Posts: 18
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From: oc
MB C230K
Buell, Guess what? My car is still at the dealer, and yes they had to replace the piston Head, I should be getting car back tomorrow, I'll update this tread once I get work order print out.
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MBWorld Fanatic!
Joined: Jun 2002
Posts: 7,266
Likes: 170
From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
Thank god you still have a warranty!!!
And people ask
"is the extended warranty worth it?"
It is if you intend to keep the car.
You're about the 5th person to write lately of problems with
a 2003 M271 engine.
And people ask
"is the extended warranty worth it?"
It is if you intend to keep the car.
You're about the 5th person to write lately of problems with
a 2003 M271 engine.
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Thread Starter
Newbie
Joined: Jul 2003
Posts: 18
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From: oc
MB C230K
Update!!!! After head replacement car still "shakes" a bit, According to my SA, they contacted MB USA and next step is ECU needs to be replaced.
So the tale continues...............................
So the tale continues...............................
Thread Starter
Newbie
Joined: Jul 2003
Posts: 18
Likes: 0
From: oc
MB C230K
Finally I got car back from the dealer. the following is the list of parts that were replaced to take care of the check engine fault ,poor gas mileage and rough idle when cold.
- Cam sensors
-Wire harness
-O2 sensors
-12 dollar vacuum hose
-Exhaust manifold gasket
-Piston head
-throttle body
-ECU
-Vacuum pump?
The car feels good now, no lag at acceleration. the only thing that worries me is some very faint knocking noise I heard the morning after I got car from the dealer. The only thing I can think of, is the valves needed some time to settle down?. I only heard the noise the first day I got the car back, but this morning is gone hopefully for good. I will continue monitoring the situation. If the noise comes back ,I will have to take it back to the dealer for a third time since this whole situation started 3 weeks ago. I hope I don't have to go back as this whole situation is becoming a huge pain in the neck.
- Cam sensors
-Wire harness
-O2 sensors
-12 dollar vacuum hose
-Exhaust manifold gasket
-Piston head
-throttle body
-ECU
-Vacuum pump?
The car feels good now, no lag at acceleration. the only thing that worries me is some very faint knocking noise I heard the morning after I got car from the dealer. The only thing I can think of, is the valves needed some time to settle down?. I only heard the noise the first day I got the car back, but this morning is gone hopefully for good. I will continue monitoring the situation. If the noise comes back ,I will have to take it back to the dealer for a third time since this whole situation started 3 weeks ago. I hope I don't have to go back as this whole situation is becoming a huge pain in the neck.
