94 B4000 Pinging
Thread Starter
|
Junior User
Joined: Jul 2005
Posts: 67
Likes: 0
94 B4000 Pinging
1994 B4000 pings under load. I also get a 186 (fuel pulse width to long) in the computer. I know it is running lean. I have changed the fuel pump amd regulator. Anyone have an idea what is wrong?
Postmaster
Joined: Dec 2001
Posts: 3,742
Likes: 2
From: UT
Running lean can cause it to ping. Since you are getting a trouble code, start with that.
One common cause of running lean and ping on these is a dirty MAF. I'd probably start by cleaning the MAF filaments.
One common cause of running lean and ping on these is a dirty MAF. I'd probably start by cleaning the MAF filaments.
Thread Starter
|
Junior User
Joined: Jul 2005
Posts: 67
Likes: 0
Originally Posted by mrshorty
Running lean can cause it to ping. Since you are getting a trouble code, start with that.
One common cause of running lean and ping on these is a dirty MAF. I'd probably start by cleaning the MAF filaments.
One common cause of running lean and ping on these is a dirty MAF. I'd probably start by cleaning the MAF filaments.
Postmaster
Joined: Dec 2001
Posts: 3,742
Likes: 2
From: UT
If you want to do the "guess and check" approach to diagnosis, then I can't stop you. But I would do a little more diagnosis before I entered "guess and check" mode.
186 is a CM code. Can I assume it passed the KOEO test? Did you try the KOER test? What do you get from the KOER test? What does the fuel pressure look like? Any vacuum leaks? And so on....
186 is a CM code. Can I assume it passed the KOEO test? Did you try the KOER test? What do you get from the KOER test? What does the fuel pressure look like? Any vacuum leaks? And so on....
Thread Starter
|
Junior User
Joined: Jul 2005
Posts: 67
Likes: 0
Originally Posted by mrshorty
If you want to do the "guess and check" approach to diagnosis, then I can't stop you. But I would do a little more diagnosis before I entered "guess and check" mode.
186 is a CM code. Can I assume it passed the KOEO test? Did you try the KOER test? What do you get from the KOER test? What does the fuel pressure look like? Any vacuum leaks? And so on....
186 is a CM code. Can I assume it passed the KOEO test? Did you try the KOER test? What do you get from the KOER test? What does the fuel pressure look like? Any vacuum leaks? And so on....
I had this problem earlier but the tranny went south for the summer. I just replaced it along with a clutch. now I am trying to fix it before winter and I need it to get out in the snow.
Trending Topics
Thread Starter
|
Junior User
Joined: Jul 2005
Posts: 67
Likes: 0
I just found this TSB here from 1998.
https://www.ford-trucks.com/tsb/full...p?tsb=98-23-10
About half way down it says that a bad maf can throw a 186 along with pinging.
https://www.ford-trucks.com/tsb/full...p?tsb=98-23-10
About half way down it says that a bad maf can throw a 186 along with pinging.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
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
Thread
Thread Starter
Forum
Replies
Last Post
