High Idle
Thread Starter
|
Hotshot
Joined: Jun 2003
Posts: 12,334
Likes: 4,344
From: SW VA
High Idle
I did a search and found nothing. Only topics discussing rough idle or erratic/low idle.
My truck ('97 4.6L auto. 97K miles, all stock) just started this yesterday. Normal idle RPM is about 750 whether in gear or not. Now, it's idling at about 1050 in neutral or park and around 975-1000 in gear. I noticed sitting at a red light, when I had to use more brake pressure than normal to keep the truck from rolling. Thats when I looked at the tach and discovered that it was idling around 1K.
My mechanic friend seems to think it's the TPS...
Could I go around and unplug sensors one by one to see what it does until I find one that makes it return to normal Idle speed? It worked on my friends Dodge (wouldnt idle) and turned out to be his MAP sensor..
Anyways...what do you guys think it could be? Im not the best when it comes to all these sensors and electronics.
My truck ('97 4.6L auto. 97K miles, all stock) just started this yesterday. Normal idle RPM is about 750 whether in gear or not. Now, it's idling at about 1050 in neutral or park and around 975-1000 in gear. I noticed sitting at a red light, when I had to use more brake pressure than normal to keep the truck from rolling. Thats when I looked at the tach and discovered that it was idling around 1K.
My mechanic friend seems to think it's the TPS...
Could I go around and unplug sensors one by one to see what it does until I find one that makes it return to normal Idle speed? It worked on my friends Dodge (wouldnt idle) and turned out to be his MAP sensor..
Anyways...what do you guys think it could be? Im not the best when it comes to all these sensors and electronics.
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by ATC Crazy
If I would need to replace it, how much would they be from the dealer? Anyone had to buy one?
JL
Trending Topics
Posting Guru
Joined: Jul 2005
Posts: 1,940
Likes: 0
I have heard of PCV tubing connecting to the back of the throttlebody elbow tends to crack causing a vacuum leak. It will be right next to the IAC so an easy one to check.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Hotshot
Joined: Jun 2003
Posts: 12,334
Likes: 4,344
From: SW VA
Well...thanks for the tips! I've got another major problem (for the wallet) that started today. I think the alternator is dead. Lost all power on the way home from work tonight....no gauges, could barely see the headlights/gauge cluster lights, and my stereo went dead...
Time to trade it in...
Time to trade it in...
Thread
Thread Starter
Forum
Replies
Last Post
90pioneer
1999 - 2003 7.3L Power Stroke Diesel
2
May 11, 2013 11:29 AM
mvvette97
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
5
Dec 1, 2008 10:51 AM
