V10 idle
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From: St Louis,MO
V10 idle
My 99 V10 Idles at 1k even after warm up. Is that normal? I do have a K&N filter but I'm not sure if it would cause a increase in idle. Any info would be great. I've only owned my 99 F250SD for a few weeks so I'm new to the V10 world
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From: OK
I'd check the accuracy of tach first. They can be off by a couple hundred RPM.
If you're sure the idle is too high, check the throttle body for carbon build-up. Could be a little soot holding the butterfly valves open. Also check the throttle cable at both ends to be sure it's not holding the butterflies open.
If you're sure the idle is too high, check the throttle body for carbon build-up. Could be a little soot holding the butterfly valves open. Also check the throttle cable at both ends to be sure it's not holding the butterflies open.
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Joined: Jan 2002
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From: USA
Could also be the IAC Valve getting dirty or ports to it
If it starts wandering up/ down in a few weeks thats it.
Chk the screw on the throttle body that is near the throttle plate lever to see if someone hasn't been playing with it because the idle was messing up.
Rich
If it starts wandering up/ down in a few weeks thats it.
Chk the screw on the throttle body that is near the throttle plate lever to see if someone hasn't been playing with it because the idle was messing up.
Rich
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oct7brian, is your truck a stick? if it is, thats the way ford makes it. an automatic truck usually idles around 750 or so. my 2000 stick and the other sticks i have driven idle around 950. i asked my service manager why, he said ford idles up the manual transmission vehicles because it helps people that dont know how to use a clutch have a smoother launch without stalling it. go figure. matt
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From: St Louis,MO
Originally Posted by FortyFords
Could also be the IAC Valve getting dirty or ports to it
If it starts wandering up/ down in a few weeks thats it.
Chk the screw on the throttle body that is near the throttle plate lever to see if someone hasn't been playing with it because the idle was messing up.
Rich
If it starts wandering up/ down in a few weeks thats it.
Chk the screw on the throttle body that is near the throttle plate lever to see if someone hasn't been playing with it because the idle was messing up.
Rich
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Post Fiend
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From: USA
The screw should not be touching the lever at Idle,I believe the spec is slightly less than 1/8th away.
The IAC is the silver looking small canister on the back of the throttlebody with 2 wires going to it.2 small screws and it comes off.There is a gasket on there so becareful.
The k/n air filter could have cause a dirty maf as stated already.
Rich
The IAC is the silver looking small canister on the back of the throttlebody with 2 wires going to it.2 small screws and it comes off.There is a gasket on there so becareful.
The k/n air filter could have cause a dirty maf as stated already.
Rich
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Sounds like the IAC is stuck.
Rich, you sure that throttle stop doesn't contact the level under normal operation?
I've noticed my 4.6L's do contact the throttle stop, haven't really looked at the V10 yet, but I'm pretty sure when I was doing the plugs that it was against the stop. If it's not against the stop, that means the throttle plate is sticking open, the TPS is hanging up, something. And sticking open, I mean that the plate can't return to the stop because there's too much crud ...
Rich, you sure that throttle stop doesn't contact the level under normal operation?
I've noticed my 4.6L's do contact the throttle stop, haven't really looked at the V10 yet, but I'm pretty sure when I was doing the plugs that it was against the stop. If it's not against the stop, that means the throttle plate is sticking open, the TPS is hanging up, something. And sticking open, I mean that the plate can't return to the stop because there's too much crud ...
Post Fiend
Joined: Jun 2003
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From: NE Texas
Originally Posted by oct7brian
My 99 V10 Idles at 1k even after warm up. Is that normal? I do have a K&N filter but I'm not sure if it would cause a increase in idle. Any info would be great. I've only owned my 99 F250SD for a few weeks so I'm new to the V10 world
Just for the record, my truck idles at 900 - '99 SD V10 5spd stick.
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