vs v6 very strange rev problem

[muzza]

hi guys this is a tricky problem i got . ok here goes when i drive my car in the 80 zone to work first thing in morning when the car is cold without changin the accelerator suddenly the revs on the tacho goe up steady to like 4 grand when this happens i just back off the accelerator and it might doe it 2 or 3 times in about a 2 or 3 km stretch then it wont do it again wierd ay also when the revs rise the car doesent go any faster if u no what i mean i have only ever noticed it first thing in the morning when i hit the 80 zone any ideas would b good cheers muz

 

[stockyvs]

are you going uphill?
a mate just replaced the box in his vs v6 auto (with a manual), it was neutralising and/or slipping occasionally especially when going uphill. It had done 150000 K's on the original box. But otherwise it drove fine, it wasn't doing it all the time. But don't rip the box out just yet, he didn't have his rebuilt so I don't know exactly what was wrong with it!

 

[muzza]

no not really its a very slight slope wouldent call it a hill

 

[muzza]

the revs just slowly go up from about 1800 to 4 or 5 grand in a few seconds but the cars speed stays the same is wierd

 

[dmitch]

mayb ur tacho is stuffed??? or can u really hear it revvin out lots.. so just when its cold and first start

 

[muzza]

no i can hear the motor revving

 

[muzza]

i have never seen it do it in the arvo going back home the same way from work it has a chance of warming up a little more before i hit the 80 zone so maybe that narrows it down a bit ? even wierder

 

[dmitch]

would most likely b a choke prob then.. u checked error codes

 

[muzza]

not yet i will check computer 2morrow cheers guys

 

[crazymum10]

Hi,

Just wondering if you ever solved this problem as I am having the same problem with a 2003 VY doing the same thing and mechanics haven't been able to find the problem so far. More often tahn not it happens on a hill but that's not always the case, sometimes it happens soonn after starting the car, other times it's after driving for hours that it occurs. "Check Engine" signal comes up on dash but when the computer was checked no code had logged. Any ideas gratefully received.

(Also note a similar problem in a thread in teh VN section, the thread is call "High rev problem". )