Notices
1978 - 1996 Big Bronco  
Sponsored by:
Sponsored by:

Pinging underload

Thread Tools
 
Search this Thread
 
Old May 23, 2011 | 07:58 PM
  #1  
soberdude94's Avatar
soberdude94
Thread Starter
|
Mountain Pass
Joined: Jul 2007
Posts: 136
Likes: 0
From: Hell with a zip code PHX
Pinging underload

Here is my Problem gentlemen I have a 93 Bronco with an Engine that has less than 60k on it I just replaced the fuel injectors when I replaced the injectors I found the # 7&8 cylinders had cut injector wires and I suspect it has been that way since the engine was installed because of power issues will never trust a shop like that again. I also replaced vac lines as the vacuum lines were all dry roted. I Drove it this weekend and it pings bad under load like it would if it were over heating does anyone have a clue what the issue could be. Also does anyone have or know where to find a vacuum diagram for the fuel canister line I failed emissions because there is a very small leak in the fuel evap system and I would like to trace the problem down
 
Reply
Old May 23, 2011 | 10:10 PM
  #2  
greystreak92's Avatar
greystreak92
Lead Driver
20 Year Member
Photogenic
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
Club FTE Gold Member
Pull fault codes. this will determine what, if any issues there are with the EEC-IV system that maintains engine and transmission performance. In the unlikely event there are no faults, warm the engine to normal operating temperature and check base timing with the SPOUT connector removed. With both of these procedures done, there should be, at the very least, a good indication as to the source of the problem.
 
Reply
Old May 24, 2011 | 08:58 AM
  #3  
jas88's Avatar
jas88
Lead Driver
20 Year Member
Joined: Feb 2002
Posts: 7,952
Likes: 589
From: Greater Austin, Texas
Club FTE Silver Member

Is this a 302 or 351? On the 302 if you have the 7 & 8 plug wires running parallel it will ping.
 
Reply
Old May 24, 2011 | 09:28 AM
  #4  
soberdude94's Avatar
soberdude94
Thread Starter
|
Mountain Pass
Joined: Jul 2007
Posts: 136
Likes: 0
From: Hell with a zip code PHX
Greystreak92 I am not a very good at this end of diognostic work can you please tell me what this stands for ? if any issues there are with the EEC-IV system that maintains engine and transmission performance.
@ Jas I have the 5.8 351
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bismic
6.0L Power Stroke Diesel
73
Mar 7, 2026 11:32 AM
rauto13
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
3
Nov 17, 2013 09:07 AM
countrycar
1999 - 2003 7.3L Power Stroke Diesel
8
Nov 21, 2012 07:16 PM
friech
2.6, 2.8, 2.9, 4.0 & SOHC 4.0 V6
3
Aug 20, 2003 12:32 PM




All times are GMT -5. The time now is 02:07 AM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE