c180 strange behaviour

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higginjo

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Jun 29, 2006
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recently my c180 1996 behaved oddly i set of from a set of traffic lights and it felt like there was no power ii stopped the car but did not turn engine off. It continued to run but felt lumpy when attempting to rev it was not very responsive, i switched engine off and restarted and it ran fine, it has done this about 6 times in last 3 weeks, it seems to do it when i am moving slowly, it has had a new mass air sensor fitted about 6 months ago and a new gear selector about 3 monhs ago so i do not think it relates to those items anybody any ideas
John
 
recently my c180 1996 behaved oddly i set of from a set of traffic lights and it felt like there was no power ii stopped the car but did not turn engine off. It continued to run but felt lumpy when attempting to rev it was not very responsive, i switched engine off and restarted and it ran fine, it has done this about 6 times in last 3 weeks, it seems to do it when i am moving slowly, it has had a new mass air sensor fitted about 6 months ago and a new gear selector about 3 monhs ago so i do not think it relates to those items anybody any ideas
John

I have the same problem, just parked the car up for 3 months and came back to it, It revs up to about 3,500 revs fine but still has low power .....once moving its very irratic an some times only pulls 2,000 revs

If I stop, turn off the engine, put the ignition on, leave it for a while and fire it up...it then runs better for a short while

I'm only guessing but does it sound like my fuel filter is blocked??????
 
Similar symptoms have been due to a faulty air mass meter.
I'd start by searching the forum for that and see what you find.
Good luck.
 
Similar symptoms have been due to a faulty air mass meter.
I'd start by searching the forum for that and see what you find.
Good luck.

I've tried disconnecting the air mass meter and it runs really badly till I plug it back in again

But there is a high pitched whine coming from the throttle body but only if you have the ignition on and engine not started
 
The throttle body is electric on mine so poss same on yours hence the whine, may be worth removing and giving it a clean, dont unplug it or have the ignition on whilst doing it though as i did on mine and it took a long run before the throttle body relearned itself again.



Lynall
 
The throttle body is electric on mine so poss same on yours hence the whine, may be worth removing and giving it a clean, dont unplug it or have the ignition on whilst doing it though as i did on mine and it took a long run before the throttle body relearned itself again.



Lynall

Is there any way to re-set it .. i.e. on rovers if you turn the ignition on to the second click press the accelerator fully 5 times within 5 seconds then turn ignition off .....it rests the throttle body
 
Throttle reset

Turn on the ignition (dash lights up) push the throttle fully down and hold it there for 5 seconds. Then turn off the ignition while still holding the throttle down. Then release the throttle and do nothing for 2 minutes and that clears the memory. If you do a lot of town driving it will only go back to as it was but the car feels so responsive initially.
 
PMS unit gone wonky can lead to misfiring on 2 cylinders (if your car has one).
 
if it has air mass sensor then it is hfm (hot/film/management), pms is pressure management, ie manifold pressure is used (with rpm) instead of mass air flow.
 

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