revs

hi all, my car sometimes over revs when i put my foot down,during the time it over revs it doesnt go anywhere, and then just contuines driving as normal, i had the car put on mb star, and thay mentioned something about high pressure on the rail, any idears ?

I have mentioned this is another thread but thought ot deserved it's own. The car idles at about 550rpm. However evey now and then (maybe once a week) it idles at 900rpm for a while. While it is high the car sounds like a V12 petrol to drive - very throaty sounding. Sometimes I start the...

Hi i have recentely noticed if you rev the car, the car does'nt go over 4000 rpm is this normal, im sure it never used to do ot before. It does it when the car is in park when you rev it . Is this normal if not what coud be the problem

Hi all, I have a 53 plate C180K and a few weeks ago the engine started to rough idle at tickover when warm. I have changed the plugs but it seems to be getting worse. The car runs fine in normal driving but when at standstill after 10-15 seconds it becomes rough. On my way home last night I put...

My E300 TD estate have approx 190k on clock. When first start journey all seems well with good acceleration then once engine warm when I put my foot down at 30-70mph the rev counter flies up and the speedo hardly moves. At slower speeds it jumps to next gear instead of accelerating in the...

When at tickover my revs usually start at about 900 cold and drop to 600 when it has warmed up. Last night the revs stayed high the whole trip home and the car sounded more throaty (but not clattery). This morning it stayed high as well and continued with the throaty sound. When I got...

my car c180k MY05 is idling at about 1300 revs when enging is warm. from cold start it is normal arout 600 revs, when aircon is on it comes down but sort of bounces between 600-800. lights and wipers do not have the same effect. diagnostics revealed no fault codes about 2 weeks ago and was told...

Hi, Ive read through previous posts and there are a few similar things but not sure if they are related so please forgive me if im asking something that has been discussed before Im a newb. and dont really know a lot about engines, or anything else come to think of it. I just bough a manual '96...

Have c200 sport (daft as is as sporty as a cabbage) 97 when gearbox kicks down horrible long pause before any acceleration...even with foot flat on floor...in fact if you put foot right to the floor car wheezes...revs build but with no power.....sometimes car pulls away brightly however it is...

I have noticed that when I press the brake pedal on my C250 turbo automatic that the engine revs drop, whether it's driving or ticking over! Does anyone with a C250 auto have the same problem? I suspect it could be the vacuum pipes - but with so many I don't know where to start! Any help...

I'm not sure if there is anything wrong here - but I have noticed it recently and it's bugging me. If I accelerate steadily, so the box changes gears between 2000 and 2500rpm, the change from 3rd -> 4th is very slow and seems odd. Initially the revs increase by 200-300rpm then after about 1...

Hi I have a strange whistling noise coming from around the turbo/ air box area on my 220cdi (611 engine). It sounds like a police car siren in the distance. The noise is usually only noticeable when the car is cold and at lower revs. When at constant revs it cannot be heard but comes in...

Hello Guys, I will try to describe it in the best ... way The car (CL500 W215 '00 model) drives fine and really smooth. When you boot it down, and especially in excess of 60-70mph ... it will accelerate fast but it will have moments that it will give even more power for a second or two. So in...

A while ago I posted a thread about my E320 1995 coupe and how it would have a revs drop whilst idling and then be ok again.Fellow members suggested that I clean the throttle body and then see how the car idles.Have now done this but still get a revs drop and have noticed that whilst driving at...

A while ago my e320 coupe would just cut out whilst idling,all the dials would just go dead as would the car, more often than not when the car was cold but also did it when warm.As suggested by fellow members I changed the ovp relay and all seemed ok.However, now when the car is idling the revs...

Hi, For a short period after starting, say 10-15 minutes, the revs are fluctuating quite noticeably. Any ideas? Thanks

Ok Ok I havn't got over watching "The Fast and the Furious-Tokyo Drift" on Saturday night. But here's a little gem from Jalopnik on a guy who transplanted a Honda S2000 engine into a old black BMW coupe. Hey you didn't think it was a BMW engine did you???;) Complete with scantily clad Japanese...

My friend has trouble with his SEL it idle really high at idle 1200-1300 seem like the mixture is rich. cars with automatic primer close the air until certain temperature is achieved then open the air valve to lean back the mixture to normal, am I correct? if so do you think some sensor that...

okay symptoms on Natalies estate are as follows. Gearbox is in "D"; car stationary and foot on brake. Engine revs are "hunting" slightly between 500-1000. Feels like car wants to lurch forward constantly (not violently). Additionally occasionally around town (we have not driven it anywhere...

Hi sorry for my bad spelling (im from sweden) my e 320 cdi is a 2005 and have a 204hk euro4 the car have run 120000 kilometer when i get it and when i drowe in 1200-1300 revs is starting to puls up and down not much but still puls. This is when the car have too work not downhill. I then chip...