Low Idle in Park
#1
Low Idle in Park
Lately, i've noticed that my truck will dramatically drop in RPMs when i go from either Drive or Reverse, into Park. Yes, I know it is normal for it to drop somewhat.. but lately it's been kinda bad.. it'll drop down to about 300, and feel like it's going to stall, but never will.. it'll just sit that low till i give it a little gas, at which point it climb back to normal while in Park.
Anyway.. i figure i might have a sensor going or something like that.. anyone have any idea what it might be?? im going to change my oil tonight, so i figure i might check some stuff while im doing it. Thanks guys.
Anyway.. i figure i might have a sensor going or something like that.. anyone have any idea what it might be?? im going to change my oil tonight, so i figure i might check some stuff while im doing it. Thanks guys.
#3
#4
My truck has been doing that when I start it up. I've got a manual though. The revs will drop down, it'll feel like it's going to stall, and it won't respond to the throttle for about a second or two. It's been doing that ever since I put a new alternator in, can't imagine how the alternator has anything to do with it though!
#7
#8
#9
thanks guys, i just looked up IAC on google for the hell of it too.. they say the same thing.. except one said they dont recommend cleaning it, as it is a nonservicable peice, just replace it.. i guess they're saying that for safeties sake?
anyhow, thanks guys! ill go to ford tomorrow afternoon i guess and order a new one. (bob, if you see this thread, let me know whatever you have to add!! it can only help, lol. thanks!)
anyhow, thanks guys! ill go to ford tomorrow afternoon i guess and order a new one. (bob, if you see this thread, let me know whatever you have to add!! it can only help, lol. thanks!)
#10
The IAC is a computer controlled air bypass around the throttle plate. The PCM uses it to control the engine idle speed and also how fast the manifold vacuum increases when the throttle is closed for deceleration.
It is possible for the IAC to stick when it gets old and gummed up or if contaminated with dirt from poor air filtration. I have heard that they can sometimes be cleaned but I have never done that myself.
It is possible for the IAC to stick when it gets old and gummed up or if contaminated with dirt from poor air filtration. I have heard that they can sometimes be cleaned but I have never done that myself.
#14
#15
#16
Originally Posted by Strider0O0
Lately, i've noticed that my truck will dramatically drop in RPMs when i go from either Drive or Reverse, into Park. Yes, I know it is normal for it to drop somewhat.. but lately it's been kinda bad.. it'll drop down to about 300, and feel like it's going to stall, but never will.. it'll just sit that low till i give it a little gas, at which point it climb back to normal while in Park.
Anyway.. i figure i might have a sensor going or something like that.. anyone have any idea what it might be?? im going to change my oil tonight, so i figure i might check some stuff while im doing it. Thanks guys.
Anyway.. i figure i might have a sensor going or something like that.. anyone have any idea what it might be?? im going to change my oil tonight, so i figure i might check some stuff while im doing it. Thanks guys.
#18
lol, yeah, i've got a k&n fipkII on there.. but it was on for nearly a year before the problem started to happen.
but, to update the thread.. i got the IAC from ford and it did nothing for the problem except took my money, lol.. it sort of went a way on it's own towards the end of summer.. i dunno why, or how.. but it went away, lol.
but, to update the thread.. i got the IAC from ford and it did nothing for the problem except took my money, lol.. it sort of went a way on it's own towards the end of summer.. i dunno why, or how.. but it went away, lol.
#20
Originally Posted by NicksterSVT
ill be willin to bet its the cold air still.... it took mine a while to start doin it
#21
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