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Power Loss

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Old Feb 12, 2011 | 10:15 AM
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mis3
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2004 CLK320
Power Loss
My 2004 CLK320 now has more than 200,000 km (124,000 miles) on it.

While everything is working fine, I feel that my car has lost power. Is this normal for an older car?

Last air filter change: Jun-2010
Last oil change: Nov-2010
MAF change: May-2008
Last change of spark plugs: At 100,000 KM
Replace transmission fluid (partial): Feb-2009
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Old Feb 12, 2011 | 10:24 AM
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From: A Canadian in Dubai, United Arab Emirates
'05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)
Originally Posted by mis3
My 2004 CLK320 now has more than 200,000 km (124,000 miles) on it.

While everything is working fine, I feel that my car has lost power. Is this normal for an older car?

Last air filter change: Jun-2010
Last oil change: Nov-2010
MAF change: May-2008
Last change of spark plugs: At 100,000 KM
Replace transmission fluid (partial): Feb-2009
Unless there is a major change in HP, I find it impossible to actually tell if a car has lost power (or gained for that matter, I mean really, can someone actually feel a 10hp increase from an ECU tune...), especially over a series of years. In your case though, no doubt that you aren't producing factory spec power anymore with 200,000km but it's probably not miles off. Only true way to tell - dyno run.
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Old Feb 12, 2011 | 01:07 PM
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2004 CLK320
It's just a feeling when I drive the car lately.

I am not aware of any dyno run in Toronto.

According to FSS, I should change my oil in another 6K KM. I am thinking to change the spark plugs at the same time.
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Old Feb 12, 2011 | 01:12 PM
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From: Jerzy
04 CLK 320 > CLK32K
You could also change the spark plug wires.
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Old Feb 12, 2011 | 02:53 PM
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2004 CLK320
Originally Posted by dynomite05
You could also change the spark plug wires.
I thought the spark plug wires should be changed when I have problems starting the car at rainy days.

Do these wires affect power as well?
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Old Feb 12, 2011 | 03:15 PM
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04 CLK 320 > CLK32K
Not sure. I usually change things before I have to to be on the safe side.
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Old Feb 12, 2011 | 03:51 PM
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2003 CLK 320
lol maybe your ready for the clk500 or any other upgrade?

i jk.

but sometimes i feel like that too. however when i do floor it, i still that sense of excitement. lol so maybe just push her a bit and see how you feel? =p
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Old Feb 12, 2011 | 03:52 PM
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Originally Posted by mis3
My 2004 CLK320 now has more than 200,000 km (124,000 miles) on it.

While everything is working fine, I feel that my car has lost power. Is this normal for an older car?

What you felt probably just a sluggist performances. Do an ECU or/and MAF reset procedure and see if it help. I know the one mod that will bring back the feel of performance in your car again........Sprint Booster !!
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Old Feb 12, 2011 | 03:54 PM
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second that, sprint booster all the way!
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Old Feb 12, 2011 | 03:55 PM
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From: Jerzy
04 CLK 320 > CLK32K
+3
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Old Feb 12, 2011 | 07:20 PM
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2004 CLK320
I will do the ECU reset tomorrow.

What is a MAF reset? How do I do this?
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Old Feb 12, 2011 | 09:40 PM
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Corrolla
Have u ever cleaned the MAF sensors ?
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Old Feb 13, 2011 | 07:08 AM
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2004 CLK320
I checked my repair records.

Back in May-2008, the MAF sensor was replaced when I experienced hesitation on acceleration from stop.

This was the only time the MAF sensor was worked on. I do not experience any similar hesitation symptom.

What does this MAF cleaning do? I did some research and this looks like something that has to be done in the sop.
Last edited by mis3; Feb 13, 2011 at 07:11 AM.
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Old Feb 15, 2011 | 04:42 PM
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how can you tell if the ecu has been tuned? besides doing a dyno run?
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Old Feb 15, 2011 | 04:45 PM
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From: Jerzy
04 CLK 320 > CLK32K
The tune should also take off the speed limiter.
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Old Feb 15, 2011 | 04:47 PM
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how can i physically check tho? im assuming that obviously requires me to drive the car to 150mph?
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Old Feb 15, 2011 | 04:48 PM
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From: Jerzy
04 CLK 320 > CLK32K
Yup. Other than that, there is no way to really tell for yourself.
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Old Feb 15, 2011 | 04:50 PM
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im just going off of what kevwood wrote above about not telling if you gained 10hp. the only tune i am doing to my 350 is tuning the ecu so i wanted to see if i can physically check when i go to the shop today...
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Old Feb 15, 2011 | 04:57 PM
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was anyone able to tell by driving or starting the car when they got their ecu tuned?
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Old Feb 15, 2011 | 04:59 PM
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From: Jerzy
04 CLK 320 > CLK32K
I was able to "feel" the difference right after I had my ECU tuned.
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Old Feb 15, 2011 | 05:04 PM
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thanks dyno....you always seem to come through everytime i have a question about something....appreciate your help and sharing your, advice, knowledge, experiences.....
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Old Feb 15, 2011 | 05:05 PM
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04 CLK 320 > CLK32K
Not a problem. Looking forward to some update pics of the ride.
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Old Feb 15, 2011 | 05:07 PM
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brad said they are aiming to have my ride ready by this friday.....its been a while since i last driven it....made 2 payments already and 0 miles...
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Old Feb 15, 2011 | 05:10 PM
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04 CLK 320 > CLK32K
lol, I know how it feels. The payoff will be when you see the car for the first time.
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Old Feb 15, 2011 | 05:15 PM
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