petemcr 10 Posted September 11, 2012 Hello everyone, hope you're all doing well. I had a search around on here with my issue and I'm guessing it's going to be a vac leak but I thought I'd best ask on here first before I go replacing pipes. My VR6 used to idle at about 750rpm, but was a bit lumpy and hesitated sometimes when you let off the throttle, but my radiator went recently and I managed to pick up a new Hella one and got it fitted. After it got fitted I noticed my revs on idle lifted to about 900rpm and the engine started hunting a bit, so the other day I removed my ISV and gave it a good clean, put it back on and now my revs are sitting at 1000+ and seems to lift slightly as the engine warms up, and they've started bouncing as well when I started it today. I'm waiting on my mate who has Vagcom and a OBD2 to OBD1 converter so I can code read it, but until I get him to look at it is there anything I can look at? I tested the ISV by shorting it on the battery and it opened and closed no problems, I pulsed it about 6 times so I assume it's working? Should I be looking at replacing the blue temp sender? Any help would be great ---------- Post added at 7:11 PM ---------- Previous post was at 7:07 PM ---------- Also, which is probably unrelated, but I've noticed the cooling fans are kicking in a little later than they used to, usually the fan would run a little at 90 degrees, then cut out, then it would hold the temp a little higher than 90, now the initial fan won't kick in till around 97 degrees and it holds it temp at around 100 degrees Quote Share this post Link to post Share on other sites
