Originally posted by DocVijay
OK. I have a strange problem that I have not been able to fix. Now that the weather is getting hot again, my Explorer has developed a strange trait. Once the car is warmed up by driving a while, something under the hood starts howling. It only does this while idling, from 750rpm up to about 1200 rpm. I thought it was the intake resonating, but no luck. Please help me diagnose this problem. It only does it when the weather gets hot. Usually if I put it into neutral and rev the engine above 1500, it stops. If I'm driving, it makes no noise. Today, at a stoplight, I tried the neutral/rev thing and it didn't work. It kept howling, and the engine stayed at about 1900 rpm for a few seconds before dropping back to idle. What's going on?
Originally posted by MrBean972
The IAC sounds like a logical solution.
I know AutoZone sells the IAC sensor and it was around i think 35$.
I live in Texas and we have AUtoZones everywhere i dunno about where your at.
Originally posted by DocVijay
Most of the driving I do is in the city, so I hear the howling every 30 seconds. The $65 is a small price to pay for my sanity (what little is left). I'm gonna go get one today and I'll post tomorrow if it works for me.
Originally posted by countrymz
All of you guys that have described this problem all have done mods to the intake system. I.E., k&N, kkm, throttle body, mass air sensor. Did any of you ever think that this sound was caused by more air whistling through? Mine does it too and I have K&N fipk, 70mm mass air sensor and a 63mm throttle body.