seeing as you guys are v. knowledgable i thought i'd ask for some advice, on behalf of my brother.
he drives a '96 Vauxhall Vectra 2.0L CDX and has been having this problem for the past few months, but now its getting dangerous:
basically, when the car is started, the engine revs reach the idle speed (approx 1000 rpm) and then drop, return to normal, then drop again, etc etc. normally that is as bad as it gets but often the car just cuts out (i think because the revs drop too low). obviously, if the car is still stationary then the problem isn't dangerous but it even happens when he is driving!!!
the other day i took it out for a spin and it happened to me. i started the car....fine, a little drop in revs but nothing to serious. pulled away and drove for about half a mile up the road when i decided to make a right. as i dipped the clutch to down-shift, the engine cut out, steering basically locked and the brakes went firm (couldn't depress them very well) as well as the oil pressure warning light coming on (engine warning light). this has happened before and is obviously a danger to both my brother and other motorists. the car isn't low on oil, coolant brake fluid, power steering fluid etc and i really can't even begin to guess what the problem is!!
he took the car into a garage a month or so back and they cleaned the idler valve (think thats right) coz they said it was a little bunged up, but the problem stil persists!!!
any help would be greatly appreciated.
i know this isn't Lexus related so thanks in advance for any help.
cheers,
rob