Idle reset...
Thread Starter
|
Posting Guru
Joined: Jun 2002
Posts: 1,026
Likes: 0
I can't my truck to properly idle right, what can I do? I have replaced the IAC and the TPS is perfect as far as voltage sweep. I can't believe this whole ordeal... All I wanted was a F-150 with a HO cam and some better heads and an intake, but apparently the speed density system can't handle it....
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Originally Posted by Jrock909
I can't my truck to properly idle right, what can I do? I have replaced the IAC and the TPS is perfect as far as voltage sweep. I can't believe this whole ordeal... All I wanted was a F-150 with a HO cam and some better heads and an intake, but apparently the speed density system can't handle it....
The Firing order must match the cam and maybe the PCM.
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
Trending Topics
Thread Starter
|
Posting Guru
Joined: Jun 2002
Posts: 1,026
Likes: 0
Best 5.0L/5.8L (302/351) Roller EFI cam:
89-95 Mustang 5.0L HO
Ford Part numbers: E8ZE-6250-CA / F1ZE-6250-AA / F4ZE-6250-DA
* Advertised Duration: 276 / 266
* Duration at .050 in.: 214 / 210
* Gross valve lift: 0.444 / 0.444
* Lobe separation: 115°
89-95 Mustang 5.0L HO
Ford Part numbers: E8ZE-6250-CA / F1ZE-6250-AA / F4ZE-6250-DA
* Advertised Duration: 276 / 266
* Duration at .050 in.: 214 / 210
* Gross valve lift: 0.444 / 0.444
* Lobe separation: 115°
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
Ok, the cam should be speed-density happy - you are running speed density, right?
Just so we're 100% clear, what firing order do you have it set to right now? Are there any vacuum leaks? Have you pulled the codes?
Just so we're 100% clear, what firing order do you have it set to right now? Are there any vacuum leaks? Have you pulled the codes?
Thread Starter
|
Posting Guru
Joined: Jun 2002
Posts: 1,026
Likes: 0
I am using the speed density system also...
I have the firing order set to the HO cam and it starts and runs beautifully, just not after it warms up? I have checked for vacuum leaks and I am not finding anything. I used a propane bottle to check for leaks to. The codes told me that the engine was running lean, what that tells me either the O2 sensor isn't working properly or there is a vacuum leak presently in the engine right?
I have the firing order set to the HO cam and it starts and runs beautifully, just not after it warms up? I have checked for vacuum leaks and I am not finding anything. I used a propane bottle to check for leaks to. The codes told me that the engine was running lean, what that tells me either the O2 sensor isn't working properly or there is a vacuum leak presently in the engine right?
Fleet Mechanic
Joined: Nov 2004
Posts: 1,324
Likes: 4
From: Michigan
You did mention you degreed the cam. All this talk about the cam. Would that have any bearing on your problems? I'm just throwing it out there. Maybe could be answered by someone more engine savvy than I.
Thread
Thread Starter
Forum
Replies
Last Post
Christopher Layton
1987 - 1996 F150 & Larger F-Series Trucks
0
Apr 9, 2016 04:55 PM
