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Running out of ideas with this one. When I bought the truck it idled normally. Now it idles cold at 700 rpm and warm at 1100. So it’s doing the opposite of what it’s supposed to. When I remove IAC plug when warm it drops to 700 and runs great ?
It started idling differently after I replaced timing belt (timing is correct at 10btdc) water pump, thermostat and because it had rust in the tank, both fuel pumps, gas tank, injectors and filter. All vacuum lines have been replaced, except the line going from gas tank breather to canister. I have sprayed carb cleaner over all intake mating surfaces and vacuum lines. I cannot find a leak. I have also confirmed that the map sensor and the IAC aren’t the issue. Any suggestions?
It started idling differently after I replaced timing belt (timing is correct at 10btdc) water pump, thermostat and because it had rust in the tank, both fuel pumps, gas tank, injectors and filter. All vacuum lines have been replaced, except the line going from gas tank breather to canister. I have sprayed carb cleaner over all intake mating surfaces and vacuum lines. I cannot find a leak. I have also confirmed that the map sensor and the IAC aren’t the issue. Any suggestions?
