HELP WITH 2002 MERCEDES CLK 430

mark Kelley · 11-20-2010, 07:54 PM

Hi guys,
Im needing some help with my car.
Only has 68,000 miles on it when I come to a stop the car sometimes has a rough idle and when i push the gas peddle it stalls like its going to die.
Its only does this some times.

1. I have changed the Mass air flow sensor Brand New.
2. I have Changed the Cam sensor.
3. Fuel filter was changed a few weeks ago.

The car Runs Great going down the road so I do not think it's the fuel pump but i could be wrong.

No check engine Light has ever come on either.

Also I need to know the location of the Coil #5 the dealer said i had a miss fire.

Do any of you know what I should change or replace?
Im scared the car is going to die on me or get me in a wreck...

Thanks Mark

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jimpott · 11-20-2010, 08:20 PM

Check your engine mounts.A lot of engine movement causes some of these problems.

mark Kelley · 11-20-2010, 08:32 PM

I have replaced them about 5,000 miles ago along with the transmission mount to.

Aaron68 · 11-20-2010, 09:24 PM

You may want to look into the sprak plugs and wires.

hotrodneb · 11-21-2010, 08:12 AM

throttle sensor

rediahad · 11-21-2010, 10:28 PM

i have the exact same problem on mine and i only have 71k but is started at 69k, i thought it was the mas also but now that i see what is going on with yours maybe it isnt

CaliE320 · 12-08-2010, 05:47 PM

it's probably a coil ready to go bad.

bryant9850 · 12-09-2010, 12:32 PM

Check your plugs and wires. Make sure plugs aren't fouled, and make sure all wires are secure on the plugs

Also, since everyone is throwing out other options try the crank position sensor. Those go out all the time and can eventually cause your car to not start at all.

dlbehrns · 12-09-2010, 10:40 PM

I think he already did that but he called it a cam position sensor. Yes? No?

gregory13lil · 12-10-2010, 07:23 AM

I had an issue after I did a tune-up a while back and after replacing other parts I found 2 small and easy issues that I should have caught.

1. One if the spark plug wires near the firewall was not on all the way. I pushed it all the way in and it smoothed out a bit.

2. After this I rechecked all connections and found that the Maf connector was loose as well.
I guess my point is to make sure you double check all the basics before you go buying other parts. Check all the wires at the plug and coil, check Maf connections, check the vacuum tubes that connect to the valve covers. Ensure that you don't hear and hissing sounds from the plastic vacuum tubes because that means that you have a leak somewhere. I will try and come up with other things later.... Need my morning coffee first!

Greg

gregory13lil · 12-10-2010, 10:52 AM

Quote:

Originally Posted by dlbehrns

I think he already did that but he called it a cam position sensor. Yes? No?

I thought we actually had both? A Cam Position Sensor and A Crankshaft Position Sensor..... Am I wrong about this?

bobbyjo9 · 12-10-2010, 11:46 AM

Quote:

Originally Posted by gregory13lil

I thought we actually had both? A Cam Position Sensor and A Crankshaft Position Sensor..... Am I wrong about this?

Crank sensor... well actually flywheel sensor if u want to get technical.

VIPclk320 · 12-10-2010, 12:57 PM

Quote:

Originally Posted by gregory13lil

I thought we actually had both? A Cam Position Sensor and A Crankshaft Position Sensor..... Am I wrong about this?

We have a CPS, Crank Position Sensor or like bobbyjo9 said flywheel sensor. very easy fix it costs about $60 in parts and can be done in 10 minutes with a long allen key.

rediahad · 12-12-2010, 01:43 AM

wouldnt a check engine light come up if those were the issues

11-20-2010, 08:20 PM	#2
jimpott Junior Member Garage is empty, add now Join Date: Oct 2009 Posts: 41 Drives: 1998 CLK 320	Rough Idle/Stall Check your engine mounts.A lot of engine movement causes some of these problems.

12-09-2010, 10:40 PM	#9
dlbehrns MBWorld Fanatic! Garage is empty, add now Join Date: May 2007 Location: Nebraska Posts: 1,269 Drives: 99CLK320,	I think he already did that but he called it a cam position sensor. Yes? No? __________________ 99CLK320-One day I woke up and my slab had morphed into a McLaren MP4-12C INMotionusa Chip Tune, Sprintbooster, VIPclk320's cold air ram intake and front & rear strut bars, Ghostrider's short tube headers and rear camber kit, MB front control arm camber bolts, Vogtland Springs, Bilstein Sport shocks, Goodridge stainless braided brake lines. Wish list: SuperSprint resonator and muffler, seconary cats deleted.

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11-20-2010, 08:32 PM	#3
mark Kelley Newbie Garage is empty, add now Join Date: Nov 2010 Posts: 2 Drives: Mercedes CLK430 AMG	I have replaced them about 5,000 miles ago along with the transmission mount to.

11-20-2010, 09:24 PM	#4
Aaron68 Member Garage is empty, add now Join Date: Jan 2009 Location: Hollywood, CA. Posts: 154 Drives: 2002 CLK55	You may want to look into the sprak plugs and wires.

11-21-2010, 08:12 AM	#5
hotrodneb Junior Member Garage is empty, add now Join Date: Oct 2009 Posts: 48 Drives: 2002 CLK	throttle sensor

11-21-2010, 10:28 PM	#6
rediahad Member Garage is empty, add now Join Date: May 2010 Posts: 95 Drives: 2001 clk430	i have the exact same problem on mine and i only have 71k but is started at 69k, i thought it was the mas also but now that i see what is going on with yours maybe it isnt

12-08-2010, 05:47 PM	#7
CaliE320 Super Member Garage is empty, add now Join Date: Jun 2004 Location: So CAli/L.A Posts: 513 Drives: 88 260 E	it's probably a coil ready to go bad.

12-09-2010, 12:32 PM	#8
bryant9850 Junior Member Garage is empty, add now Join Date: Oct 2010 Posts: 73 Drives: 2002 CLK55	Check your plugs and wires. Make sure plugs aren't fouled, and make sure all wires are secure on the plugs Also, since everyone is throwing out other options try the crank position sensor. Those go out all the time and can eventually cause your car to not start at all.

12-10-2010, 07:23 AM	#10
gregory13lil MBWorld Fanatic! Garage is empty, add now Join Date: May 2006 Location: San Antonio, Tx Posts: 1,437 Drives: 2000 CLK430 / 2006 Infiniti QX56/ 2012 Harley Street Glide	I had an issue after I did a tune-up a while back and after replacing other parts I found 2 small and easy issues that I should have caught. 1. One if the spark plug wires near the firewall was not on all the way. I pushed it all the way in and it smoothed out a bit. 2. After this I rechecked all connections and found that the Maf connector was loose as well. I guess my point is to make sure you double check all the basics before you go buying other parts. Check all the wires at the plug and coil, check Maf connections, check the vacuum tubes that connect to the valve covers. Ensure that you don't hear and hissing sounds from the plastic vacuum tubes because that means that you have a leak somewhere. I will try and come up with other things later.... Need my morning coffee first! Greg

12-12-2010, 01:43 AM	#14
rediahad Member Garage is empty, add now Join Date: May 2010 Posts: 95 Drives: 2001 clk430	wouldnt a check engine light come up if those were the issues

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