cheekychimp
Well-known member
I have an aftermarket throttle body but the FIAV and ISC assembly bolts straight onto it. I'm having a couple of idle issues and I want to rebuild that part. Now I know I can get new o-rings/gaskets, a new ISC, new throttle closed switch but what about the FIAV itself. As far as I know it's just a wax plug so if it is faulty can it be replaced or do you have to purchase the entire lower assembly?
I also know there are a number of block off plates around. One that blocks off everything including the ISC and just replaces that entire assembly. Another that goes between the TB and the assembly and retains the ISC function whilst eliminating the FIAV and an EGR block off. Does any one have any info on the benefits and disadvantages of each.
For reference, Hong Kong is a tropical climate so for 10 months of the year or more it really never gets cold. It also means that I have NOT deleted my A/C and I have no plans to do so. With a properly functioning FIAV I get an extremely fast idle at start up when it is warm, which I really don't like.
I'm leaning towards an FIAV block off that retains the ISC (for the A/C) but I just want to find out from those that have gone that route if the car is difficult to start or stalls a lot until it warms up because that would bug me.
I also have a 12v solenoid activated FIAV lying about that I could install on a toggle switch in place of the stock FIAV. The advantage of running that is that I could get some restrictors and play around until I get the correct start up rpm and once I have that done I could run it off a temp switch to make it fully auto.
I also know there are a number of block off plates around. One that blocks off everything including the ISC and just replaces that entire assembly. Another that goes between the TB and the assembly and retains the ISC function whilst eliminating the FIAV and an EGR block off. Does any one have any info on the benefits and disadvantages of each.
For reference, Hong Kong is a tropical climate so for 10 months of the year or more it really never gets cold. It also means that I have NOT deleted my A/C and I have no plans to do so. With a properly functioning FIAV I get an extremely fast idle at start up when it is warm, which I really don't like.
I'm leaning towards an FIAV block off that retains the ISC (for the A/C) but I just want to find out from those that have gone that route if the car is difficult to start or stalls a lot until it warms up because that would bug me.
I also have a 12v solenoid activated FIAV lying about that I could install on a toggle switch in place of the stock FIAV. The advantage of running that is that I could get some restrictors and play around until I get the correct start up rpm and once I have that done I could run it off a temp switch to make it fully auto.