tickover variation when heater on

[wakeyblue]

hi i wonder if anyone has had this problem and can advise me today my surf
when stood at lights started missing on idle . could feel the judder through the car , so i drove further but as i came to another set of lights the same , i turned heater of and problem disapeared , so i tried it again and it started missing ,anybody any ideas cheers john

[Highlander1]

hi i wonder if anyone has had this problem and can advise me today my surf
when stood at lights started missing on idle . could feel the judder through the car , so i drove further but as i came to another set of lights the same , i turned heater of and problem disapeared , so i tried it again and it started missing ,anybody any ideas cheers john

When electrical appliances fan blowers rear windows lights etc are all on I find they drain power from the system which is apparent on tickover even with diesel engines. turn all the gear off and the idle picks up and settles down.

did you have lots of stuff on.

JB

[Koi]

hi i wonder if anyone has had this problem and can advise me today my surf
when stood at lights started missing on idle . could feel the judder through the car , so i drove further but as i came to another set of lights the same , i turned heater of and problem disapeared , so i tried it again and it started missing ,anybody any ideas cheers john

maybe alt not throwing out enough power when various bits of electrics are on. Do the lights go bright and dim when you rev it at idle.

[kitesurf_phil]

It could also be that your battery is a bit duff and alternator is doing all the work.

The only thing that makes my engine run a little lumpy is if I keep my finger on the window up/down button after the window is full up/down.

Somebody did a calculation of all the electrical gizmos on the Surf and, if you have everyithing going at once, the alternator is only just adequate for the job.

[wakeyblue]

It could also be that your battery is a bit duff and alternator is doing all the work.

The only thing that makes my engine run a little lumpy is if I keep my finger on the window up/down button after the window is full up/down.

Somebody did a calculation of all the electrical gizmos on the Surf and, if you have everyithing going at once, the alternator is only just adequate for the job.

hi thanks for you help all , i noticed that the aircon switch was on and the indication light for the aircon is real dim ,i turned it off went for a run today
and all seemed ok great site this !!!! cheers john