VN V6 Idle problems & aircon

[thomo_113]

Hey guys, hope u can help me on this one!

Ive got a Aug 1991 VN V6 S pack manual...

Lately when i turn on my aircon, the idle speed drops or isnt high enough and the car stalls (when stationary), when driving it just feels really sluggish, anyone know what the problem is???

Ive just coped by not using aircon for a while, but its getting to me now!

Any help much appreciated,

Thanks,
Chris

[fitzy2005]

have you reset the ecu? may help or even clean throttle body out?

[thomo_113]

yep, reset the ecu... havent looked at the t/b yet... i presumed it would be something electronic, the car is only new to me so no idea (throttle position sensor or some sort of rev sensor )

[fitzy2005]

could be have u done a error code check?

VN - VP Faults

[thomo_113]

nope.. how do i do that? im guessin i need to take it to holden... and the engine problem light aint coming on...

[thomo_113]

yeah been to those sites... all that tells me is what the codes mean and the other site is common problems with vns. I have no idea what codes (if any) are coming up???

[geta]

clean the IACV

[mouce]

I'll second the IACV, that's what controls the amount of air allowed into the engine at idle, if this is caked full of carbon deposits (as most of them are) then it can't move and let a bit more air in to keep the engine running with the aircon on. Might as well do the t/b while you have it out.

[fitzy2005]

oh sorry, links have been corrected or: Checking your Computer for Faults (VN - VP)