V6Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.
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Well i did everything possible for a tune up on this car except iac it runs great and has a smooth idle of 650rpm but at stop lights it revs up from like 650rpms to about 800rpms back and fourth i heard it was caused by a dirty iac. I bought a can of air intake/throttle body cleaner do i use this too clean iac? also which parts of the intake system should i clean to prevent this rough idle? Ill have the intake system off when i change the valve cover gaskets so i can clean anything i have too to prevent this.
__________________ Iroc MODS
Air/Fuel- Moddified Holley 650 Dual Feed electric choke vacuum secondary carb, Holley Street dominator high rise intake, mallory 3 port fuel pressure regulator, 14x3 Summit open element air cleaner. 6psi fuel pressure
Ignition- Summit HEI dist, Summit 8.0mm wires. 8 degrees of timing
Exhaust- Hooker 2055 headers and y-pipe, 3" MAC cat delete pipe, 3" Hooker catback
Transmission- S-10 2025 stall torque converter, Superior shift kit w/ vette servo, Energy suspensions mount, B&M super cooler.
Cooling- 180 hi flow mr.gasket thermostat, 195 jet fan switch.
Suspension- UMI tubular non adjustable lower control arms
Nope, I didn't bother to. I explain where everything is AND what it all looks like in the third paragraph where it starts off "The IAC passageway can be seen..."
__________________ -Tom P (Hot rodded 1986 Firebird 2.8l)
Just remove the air intake bellows and unscrew the IAC. Spray out the passages behind the IAC hole and the throttle body and throttle blade to remove carbon. When you clean the pintle on the IAC, make sure the carb cleaner doesn't get into the base of the sensor.
