Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Ford Motorhome Chassis Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 11-28-2022, 06:37 AM   #1
Junior Member
 
Join Date: Nov 2022
Posts: 7
Blog Entries: 1
99 f53 6.8 v10 no injector pulse, no coil pulse...help please

I've replaced the crank & cam sensors, replaced the PCM " FLASHED & PROGRAMMED ", i have power at the injectors & coils, but no ground pluse, and no CEL light at all.

The main PCM Ground appears to be ok, any ideas of where to look for a possible wiring issue besides the harness at the coils & injectors ? I am at a loss, any help is much appreciated. Could it possibly be the Micro Relay ? I've tried switching the main Relay, still the same issue
kevindale is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 11-28-2022, 08:39 AM   #2
Senior Member
 
GypsyR's Avatar
 
Join Date: Jul 2019
Location: Upstate SC
Posts: 2,477
My first thought would be to use an OBD II scanner with data capability. That way you can crank the engine over and see what the computer sees. Like no crank sensor signal for random example. You can replace that crank sensor as many times as you want and it will never work if a mouse has chewed the wires in two back somewhere you can't see. If you could see on a scanner that there is no crank signal and you've already changed the sensor THEN you'd know to start looking at the wiring for that particular component. For example.
You can't just semi-randomly replace parts and hope to luck into a fix. You can buy the whole parts store and a whole new engine and still not fix it if something like the example rodent damaged wires has happened.
GypsyR is offline   Reply With Quote
Old 11-28-2022, 09:05 AM   #3
Senior Member
 
avfordguy's Avatar
 
Monaco Owners Club
Ford Super Duty Owner
Join Date: Dec 2008
Location: Kingsville TX
Posts: 1,674
Where your at, stop replacing parts ! You can't guess. There was a TSB a while back that addressed pcm ground issues, you may want to Google it.
The BEST scanner is FORSCAN ( program) and you will need a good obd2 blue tooth adapter, forscan as far as I know is the only home user program that starts with a simple KOEO check. That is key on engine off. That tests the electrical circuits and sensors BEFORE engine crank, it is a very valuable tool to use in your issue without it your going to spend hours tracing each circuit.
FORSCAN mimics the Ford IDS system that the dealers have.
avfordguy is offline   Reply With Quote
Old 11-29-2022, 02:35 PM   #4
Senior Member
 
Gulf Streamers Club
Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 3,751
I have read that power to injectors and coils is continuous and PCM controls the ground side switching? If RELAYS involved, I would first experiment w/ swapping relays around? You do have RELAY #6 PCM RELAY. ... and a (plug-in?) PCM Diode? Good Luck
__________________
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
THenne1713 is offline   Reply With Quote
Old 11-30-2022, 06:07 PM   #5
Junior Member
 
Join Date: Sep 2017
Posts: 2
I had a similar issue with my 99 adventure and turned out to be the PCM got shorted by an aftermarket ignition coil. Have you scanned the codes and if so are receiving any P0351-P0360? I did not want to throw parts at it and called a friend at a Ford dealer and they said that if it's not a ground issue or relay issue it would be the PCM. They were correct! I sent the PCM to a shop in south Florida and diagnosed that coil #2 fried bank 2 and would only allow the left side of the motor fire. The place I sent it to was autocomputerperformance.com they are in Margate FL. Very knowledgeable and knew the issue right away. Hope this helps!
jeff1978 is offline   Reply With Quote
Old 12-01-2022, 09:04 PM   #6
Senior Member
 
Gulf Streamers Club
Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 3,751
Quote:
Originally Posted by kevindale View Post
I've replaced the crank & cam sensors, replaced the PCM " FLASHED & PROGRAMMED ", i have power at the injectors & coils, but no ground pluse, and no CEL light at all.

The main PCM Ground appears to be ok, any ideas of where to look for a possible wiring issue besides the harness at the coils & injectors ? I am at a loss, any help is much appreciated. Could it possibly be the Micro Relay ? I've tried switching the main Relay, still the same issue

WHICH MAIN RELAY did you SWAP?
__________________
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
THenne1713 is offline   Reply With Quote
Old 12-09-2022, 03:47 PM   #7
Junior Member
 
Join Date: Nov 2022
Posts: 7
Blog Entries: 1
IT IS FIXED, AND Here was the Issue, and this TSB Needs updated, as it controls a WHOLE LOT MORE than shifting issues. Pin #51 Black Wire With White Stripe, 1 of the 7, involved in this Fix, Controls the Ground Circuit to The ECM Relay, Which In Turn The Fuel Pump Relay, Had NO CEL LIGHT AT ALL, and OBDII Port was Dead, and it also causes The MAF Sensor to have an Erratic Reading

Thanks Everyone

https://www.1999southwind.com/f53-tr...-and-2nd-gear/
kevindale is offline   Reply With Quote
Old 12-09-2022, 10:26 PM   #8
Senior Member
 
Gulf Streamers Club
Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 3,751
So was the PIN loose, corroded, or wire had rodent damage, or ??
__________________
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
THenne1713 is offline   Reply With Quote
Old 12-10-2022, 05:34 AM   #9
Junior Member
 
Join Date: Nov 2022
Posts: 7
Blog Entries: 1
Quote:
Originally Posted by THenne1713 View Post
So was the PIN loose, corroded, or wire had rodent damage, or ??
I did not remove the Pins, as described in the TSB, I Simply cut it above the Factory Splice, approximately 6" from the ECM plug. Just to see if it was going to work, I temporarily just used a Wire nut to Re Attatch the 7 Black & White wires with a 1' Long piece of 10 gauge Black wire, with a 1/4" Eyelet, I Also used my Original ECM.

I just sunk a Self Tapper about 1" below the Original mounting Hole, Cleaned Both holes to Bare Metal and Re Connected all 3 Leads, 2 Original back to the Original Hole, and my Fix Wire in the New Hole, it must have 2 separate mounting holes, as mentioned in the TSB, apparently Pin #51 Had A Break in it Somewhere, Honestly it may have just been a Bad Connection at the Original Bolt Location, as it WAS NOT bare Metal, it was Black Paint, but I just went on with the TSB as this thing did always Shift hard anyhow. It'll be spring before I Drive this thing again, but I'll report back as to wether it Impoved the Shifting.

I'm going to go back in and solder everything up today, and Re Mount the ECM and put the Dr Side Seat back in, THANK GOD this worked, but yes they REALLY need to update that TSB, as it is for ALOT more than just Erratic Shifting Issues, and they should point out each Pin # and their Purpose.

Infact when I get time, I'm going to look up each of the 7 Pins Involved, and Post an Updated DIY TSB, with Pin #s And Purposes for Each Wire.
kevindale is offline   Reply With Quote
Old 12-10-2022, 12:02 PM   #10
Junior Member
 
Join Date: Nov 2022
Posts: 7
Blog Entries: 1
After contacting the Publisher of the TSB for The Erratic Shifting Issue, he added my notes for the ECM Relay Ground to it as Well, hopefully this helps someone out.

I also started a new thread with the info as well.
kevindale is offline   Reply With Quote
Old 12-25-2022, 12:37 PM   #11
Junior Member
 
Join Date: Nov 2022
Posts: 7
Blog Entries: 1
99 fleetwood flair f53 6.8

Happy to Report, The Old Fleetwood Flair Lives On, has Started up the last 2 Days in -20į Weather, Generator Started, Furnace Lit and was and Is, our Back Up Shelter for Emergency during the winter here in Ohio
kevindale is offline   Reply With Quote
Reply

Tags
f53, v10



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
F53 v10 PLEASE HELP Jayne1 Forest River Owners Forum 8 12-22-2022 05:15 PM
1990 F53 460 Fuel Injector Replacement JJMcKinney83 Ford Motorhome Chassis Forum 250 09-24-2020 06:57 PM
2017 Ford f53 fuel injector noise miked11272 Ford Motorhome Chassis Forum 1 12-11-2018 03:26 AM
Pulse :: 2019 Fleetwood Pulse gkullman iRV2 Owners Registry 0 10-08-2018 01:35 PM
1995 Winnebago no spark or injector pulse demon1018 Class A Motorhome Discussions 0 09-24-2015 04:02 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 09:01 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.