daveseavista
Senior Member
Hi
I have just bought my first MB having suffered years of overheating problems with Vauxhall Senators and MV6 Omegas. I have had the car a week and so far I am very pleased. I have one problem that is puzzling me and I am hoping someone can help.
Sometimes the car has very little power when pulling away or going up hills. Most of the time it is fine. Pushing the accelerator down makes little difference when it is playing up, the car will pick up speed in its own time and then be fine. My first thoughts were the lambda sensor, I tried a test that worked on the Senator of holding the throttle at 3000 rpm and seeing if the revs were constant with a regular variation pointing to the lambda. The revs stayed at 3000. Looking at the posts on the forum it looked like the MAF was the next area to check but I found a thread on the forum saying the 1994 C180 does not have a MAF but an air pressure sensor. Do these fail and give the above symptons? Can they respond to cleaning with IPA? Is there a way I can test it is working?
Many thanks in advance Dave
I have just bought my first MB having suffered years of overheating problems with Vauxhall Senators and MV6 Omegas. I have had the car a week and so far I am very pleased. I have one problem that is puzzling me and I am hoping someone can help.
Sometimes the car has very little power when pulling away or going up hills. Most of the time it is fine. Pushing the accelerator down makes little difference when it is playing up, the car will pick up speed in its own time and then be fine. My first thoughts were the lambda sensor, I tried a test that worked on the Senator of holding the throttle at 3000 rpm and seeing if the revs were constant with a regular variation pointing to the lambda. The revs stayed at 3000. Looking at the posts on the forum it looked like the MAF was the next area to check but I found a thread on the forum saying the 1994 C180 does not have a MAF but an air pressure sensor. Do these fail and give the above symptons? Can they respond to cleaning with IPA? Is there a way I can test it is working?
Many thanks in advance Dave