Startup Fast Idle
#1
Startup Fast Idle
I own a 2004 F-150 4.6L. I cleaned the throttle body and the map sensor both with the correct cleaning fluid. Now when the truck is started it goes to 1600 rpm and slowly works down to 800 or 900 rpm. This can't be good for the engine on cold start....
Any Ideas?
Craig
Any Ideas?
Craig
#3
#4
I own a 2004 F-150 4.6L. I cleaned the throttle body and the map sensor both with the correct cleaning fluid. Now when the truck is started it goes to 1600 rpm and slowly works down to 800 or 900 rpm. This can't be good for the engine on cold start....
Any Ideas?
Craig
Any Ideas?
Craig
#6
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#8
Senior Member
I have a 2005 STX 4.6 liter. I don't have a Tac so I can't tell what the rpm's are at startup but mine has always idled high at startup. Especially the colder it is. Less when the air temperature is warm. I figured this was normal.