idle surge
idle surge
Tuned
Joined: Apr 2003
Posts: 395
Likes: 0
From: Austin
idle surge
Mine did that after I bought it. After having a problem with it at work, another dude at work who used to have a Ranger with the same 2.9L as mine. He said the rough idle was because of a clogged air filter. About a week later I opened the airbox to check it, and the filter was practically black (I'll take a pic of it in a little bit) it was so clogged. I went and bought a new cheapo paper filter and the rough idle has hardly happened since.
OVERALL: Try a new air filter as well.
OVERALL: Try a new air filter as well.
Freshman User
Joined: May 2003
Posts: 46
Likes: 0
From: A cold city in the Great White North
idle surge
Been there done that. Its not the air filter. Its a sensor somewhere down the line. I just don't know which one it is thats causin the problem, and im too cheap to take it in for a scan.
Tuned
Joined: Apr 2003
Posts: 395
Likes: 0
From: Austin
idle surge
Originally posted by ShadowBronco2
Been there done that. Its not the air filter. Its a sensor somewhere down the line. I just don't know which one it is thats causin the problem, and im too cheap to take it in for a scan.
Been there done that. Its not the air filter. Its a sensor somewhere down the line. I just don't know which one it is thats causin the problem, and im too cheap to take it in for a scan.
Each car has it's own reasons for the same problemos... so... who knows...
Freshman User
Joined: May 2003
Posts: 46
Likes: 0
From: A cold city in the Great White North
idle surge
Thats true. I disconnected the O2 sensor and the problem seems to have gotten a bit better. It still does it a bit, but not as bad.
Trending Topics
Tuned
Joined: Apr 2003
Posts: 394
Likes: 13
From: 13th Colony
idle surge
Shadow, you do not have to take it in to get the codes scanned. You can run it with a piece of wire or gem clip.
see this thread:
https://www.ford-trucks.com/forums/s...hreadid=112295
http://www.broncodata.com/tech/codes.htm
I believe that 90 and earlier use the 2 digit code and 91 and later use the 3 digit codes. They are both listed in the above link. The cutoff maybe 92 instead of 91, not sure.
BroncoBasher
see this thread:
https://www.ford-trucks.com/forums/s...hreadid=112295
http://www.broncodata.com/tech/codes.htm
I believe that 90 and earlier use the 2 digit code and 91 and later use the 3 digit codes. They are both listed in the above link. The cutoff maybe 92 instead of 91, not sure.
BroncoBasher
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
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
Tuned
Joined: Apr 2003
Posts: 394
Likes: 13
From: 13th Colony
idle surge
Shadow,
I am assuming you have fuel injection if it is an 86 motor. Does it have the eec-iv computer control system? The computer is located behind the passenger side kick panel and the test harness is behind the airbox under the hood. I believe there is a picture of the connector somewhere on the links for eec-iv. I believe that that test procedure applies to all eec-iv fuel injected engines.
BroncoBasher
I am assuming you have fuel injection if it is an 86 motor. Does it have the eec-iv computer control system? The computer is located behind the passenger side kick panel and the test harness is behind the airbox under the hood. I believe there is a picture of the connector somewhere on the links for eec-iv. I believe that that test procedure applies to all eec-iv fuel injected engines.
BroncoBasher
Thread
Thread Starter
Forum
Replies
Last Post
CobraXP
Explorer, Sport Trac, Mountaineer & Aviator
2
Apr 22, 2002 06:52 PM
