dnb

As far as I can see, my car engine runs fine under load.
(still waiting for a selectmonitor thing to test that...)

However, during idle (after the car is warm) it doesn't seem right.

The idle speed is 800-900rpm (as I would expect), but it seems to slow down and speed up (or misfire completely maybe) very slightly - this isn't noticable on the rev counter.

I replaced the plugs, and the car runs better under load now, but this hasn't changed the idle.

My next job is to try a replacement fuel filter. (it needs replacing shortly anyway...)

Am I being over sensitive, is it the first sign of the lamda sensor dying, or someting a bit more sinister?

TIA

dnb

I must be getting over sensitive about keeping the car running right. Will have to compare notes at the weekend meet.

Anyone got any suggestions? Please???

bioforger

iTrader: (1)

Might be the MAF, when u get the select monitor on it will show if its been failing.

SCOSaltire

mine does the same

idle control valve maybe?
seems its controlling it fairly well... but between a range.. not on the nose at a rpm...

i have replaced maf, plugs, and leads -still the same (tho maf was dying and it raised the idle a few revs)

still 'hunts' - u can feel it on the car, but hardly notice anything on the rev counter.

*might* be lamda sensor?
but it seems to me that this would be more noticable.

nom

Lambda seems likely to me - as MAF is used under load & lambda when cruising (both at idle, I believe).
It could be broadly checked by fuel consumption - if it's up or down on normal (especially on motorway cruising) it would show a dodgy lambda. But only works if you've paid attention to mpg before
[edited as my spleling leaves rather alot to be desired]

[Edited by nom - 9/24/2002 1:10:39 PM]

dnb

I'll be getting my hands dirty tonight having a look at the idle valve now...

The others will have to wait until I get to a select monitor (should only be a couple of weeks...)

I haven't noticed any difference in the fuel useage, but then I don't follow it that much these days.

Grr. now the clutch feels like it's slipping Always something wrong...