2001 F550 no WTS, no tach - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-05-2011, 03:40 PM
Powerstroke.org Rookie
 

Join Date: Sep 2011
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
2001 F550 no WTS, no tach

Well, i've been having issues for the past 3 weeks almost now.

up untill today the truck would start fine cold, WTS worked, Tach worked.

Truck stalls after being run for 10 -30 mins

Won't restart for several hours.

I have done all the easy stuff

oil change, fuel filter, CPS, unplug ICP, rebuilt IPR.

When the motor cranks warm the ICP reads .5 - .55 volts

When cold cranked it reads .935 and fires up.

I read somewhere that the ICP is suppost to have 12 volts to it. Mine had 5 volts

So I jumpered a wire from the battery to the ICP and tried that.

Bad move. I read now that it should have 5 volts...

Now no WTS, no tach signal.

Changed out the CPS again and still no tach.

Checked fuses with DVOM and all zeroed out.

I should specifically check fuse 19, 22, and 30 again but I checked every single fuse under hood and under dash.

Did I fry my PCM trying to jumper 12v to the ICP?

Last edited by two-lane; 10-05-2011 at 03:45 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 10-05-2011, 05:36 PM
Powerstroke.org Rookie
 

Join Date: Sep 2011
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Double checked fuses, all good. What about the PCM relay in the engine fuse box? Could I have shorted that by jumping the ICP.

I tried to pull codes and my superchips would not connect.

It read codes yesterday, now after my lapse in judgement, it wont read codes.

How can I check the PCM with a DVOM?
Reply With Quote Quick reply to this message
  #3  
Old 10-06-2011, 12:12 PM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 1,623
Thanks: 0
Thanked 22 Times in 22 Posts
Feedback Score: 0 reviews
My guess is that the PCM is fried. Tach gets its signal from the PCM. I don't know if you can check the PCM with a DVOM, but I'll look at a PCED (Powertrain Control Emissions Diagnosis) manual to see what might be able to be checked (although I can only go to a 96 PCED and your's is a 2001. Cheers!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 04:21 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors