Well, I've had my car in the mechanics today getting the harmonic balancer, coolant leaks and oxy sensor replaced. I also asked them to have a look at the dizzy because of that problem some of you may have read on a previous thread.
The outcome of those events was that they replaced the balancer with a Powerbond Street/Race balancer they found that the coolant leaks werent soley pointing to the waterpump but quite a few hoses that were dripping a bit. They pressure tested the radiator to find were the leaks were and tightened them accordingly. A bit of a saving there. and then the oxy sensor was done as well as an oil change. they put the car on the dyno again and left the dizzy alone and said that it WASNT a bent shaft but the bushes were a bit worn, other than that it was still in good condition. I was told to keep an eye on the way it idles now that these critical things have been done and see if the idle quality improves. I mentioned to them the issues I had with the idle quality such as revs pick up while stationary and hunting at low speeds too. I suggested maybe the ISC valve could be the problem and he firmly said that could be dirty and for me to maybe give it a clean.
That leads me to my question of 'how do you clean an ISC valve'?
I know whre it is and what it looks like but what procedures do I need to keep in mind and what hassles would I need to look out for?
As ebxr8240 said, jumping idle quite often caused by the idle speed being set a bit too low making the ISC cut in and out trying to get the idle right. Make sure the idel is set using the correct proceedure.
To clean the ISC properly, disconnect the wiring plug, and unbolt the ISC (just two bolts from memory). Use plenty of carby cleaner to spray out the insides, I was amazed how much crap came out of mine, it nearly took a complete can of cleaner to get everything out. Remove the old gasket and just use some silicon gasket maker to put it back on.
A lot of WD40 sprayed into the ISC after cleaning will also loosen things up. You will get quite a bit of carbon out.
'We drew a line in the sand. No one would kick sand in our faces again!' G.P.
EF Fairmont Ghia, Bordeaux Purple, 5.0 Windsor, Crane cam, ChipTorque modded ECU, full XR bodykit, 16 inch XR8 alloys, 2.5 inch dropped Tickford suspension, full grey leather trim with chrome, woodgrain and lots of lights, climate control, ABS, Premium sound, trip computer, power everything
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.