Mis Fire - AGAIN

[mercman1969]

Seems like as the damper/colder weather sets in my W163 (ML320 '52' plate) has AGAIN decided to start playing up

I changed ALL the coil packs and leads in March and it has run well over the spring/summer

Problem I get now is when I start up intermittantly I get very rough idle with no response to throttle inputs except some occasional coughing and kocking??

I can at times be sat pumping the throttle with absolutly no response from the engine for 2 or 3 minutes, then it decides to rev to 4k then when select into gear the same happens

Am quite worried as wife uses it to transport our 4 year old to school and has to cross the A1

Anybody any ideas??

Any members anywhere around the corby area that I could pop in to speak to tomorrow?

 

[EDZ649]

Could be the MAF.

 

[mercman1969]

Would the MAF only have this effect in the colder/damper weather?

I thought it might be what would in old times been termed the choke or choke control valve

I literally get NO engine response when it is playing up from any throttle input

 

[EDZ649]

Not sure, would be best to get the codes read to be 100% sure.

 

[mercman1969]

Anybody that can do that near me in Grantham or near Corby as visiting tomorrow

 

[mercman1969]

Ok folks,

am working away from home this coming week

Anybody around the Telford / Wolves area that can help me with this please

 

[proser]

I know of a placed in Burton upon Trent , if it's any good.

 

[grober]

Possible that your engine temperature sensor is not telling the ECU the engine is cold so no idle or mixture compensation is taking place or you have a fault on your electronic thottle/actuator. Best to get the codes read as suggested.

 

[mercman1969]

Anywhere close to Cannock is fine. Would they pick it up as I work from 7am till 5.30pm?