Erratic engine revs

[asif mirza]

I have a 280E 2005 --due to lockdown unable to drive therefore started the car to charge the battery noticed at times the revs we're failing and recovering after brief lag ---can anyone kindly suggest what it might be and how to rectify this---Thanls
Mirza

 

[Rotorhead500]

I have a 280E 2005 --due to lockdown unable to drive therefore started the car to charge the battery noticed at times the revs we're failing and recovering after brief lag ---can anyone kindly suggest what it might be and how to rectify this---Thanls
Mirza

Could simply be fuel has evaporated or dropped back in the fuel lines through lack of use, hence recovering after brief lag.

Also had one episode on my old CLS years ago, where it sounded like a tractor running on 3 cylinders on a.cold start one morning.

Turned it off, spoke to an Indie as in was worried, turned it back on again and it was fine! Turns out the injection system is very sensitive to low voltage on the battery.

Worth giving the battery a good charge, or put on a conditioner?

 

[asif mirza]

Could simply be fuel has evaporated or dropped back in the fuel lines through lack of use, hence recovering after brief lag.

Also had one episode on my old CLS years ago, where it sounded like a tractor running on 3 cylinders on a.cold start one morning.

Turned it off, spoke to an Indie as in was worried, turned it back on again and it was fine! Turns out the injection system is very sensitive to low voltage on the battery.

Worth giving the battery a good charge, or put on a conditioner?

 

[asif mirza]

Thank YOU for your help
Mirza

 

[Rotorhead500]

Thank YOU for your help
Mirza

No problem, hopefully helps - let us know how you get on!

 

[RhodieBill]

Battery....

 

[asif mirza]

No problem, hopefully helps - let us know how you get on!

REVs are normal response at present---thanks