MG ZS intermitent, stalling and loss of power.
Variant: 180
Model Year: 2004
Categories:
Running Rough, Starting & Power Loss
This problem has been happening for about a year, I've took it to several garages, all of which have no clue, they don't see a code so they think it's fine.
So the problem is, when idling the car sounds rough, the revs move ever so slightly up and down all the time by a 100 revs, when driving, I put my foot on the clutch and it can go all the way past idle and just stall at high speeds, seems to be worse in the cold.
Replaced: MAP sensor, O2 sensors, fuel filter, battery, spark plugs.
Checked for vacuum leaks of which there is none, mixture seems a bit rich, manifold holds vacuum at 17 inHg, checked cylinder pressures which are all consistent, I'm pretty much out of idea's, only thing I can think of left is a new idle control valve.
So the problem is, when idling the car sounds rough, the revs move ever so slightly up and down all the time by a 100 revs, when driving, I put my foot on the clutch and it can go all the way past idle and just stall at high speeds, seems to be worse in the cold.
Replaced: MAP sensor, O2 sensors, fuel filter, battery, spark plugs.
Checked for vacuum leaks of which there is none, mixture seems a bit rich, manifold holds vacuum at 17 inHg, checked cylinder pressures which are all consistent, I'm pretty much out of idea's, only thing I can think of left is a new idle control valve.
Posted: Jun 14, 2013 (11 years ago)
i assume your car has the rover v6 engine? have you tried a new coolant temp sensor also try cleaning the throttle body and idle control valve you say the engine sounds rough do you mean noisey there was a problem with inlet manifold swirl flaps these rattle when past sell by date also is the valve timing ok and inlet manifold gasket ok
Posted Jun 14, 2013 (11 years ago)
Yeah it's the Kv6, I have cleaned the throttle body and ICV a few times, it's not a rattle like if it was the valves, it sounds like it can't keep a steady rev, like the mixture is constantly off, as far as I'm aware the valve timing is fine, I have gone around the inlet manifold with propane and no leaks or anything, I have thought about changing the coolant temp sensor as I thought it may be that, its just a real pain to get to, not sure I want to dig in there unless I'm sure that's the problem, there no fault code or anything for it.
Posted Jun 15, 2013 (11 years ago)
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