Notices
1994.5 - 1997 7.3L Power Stroke Diesel  

NO Start

Thread Tools
 
Search this Thread
 
Old Sep 24, 2011 | 01:03 PM
  #151  
DanS12's Avatar
DanS12
Thread Starter
|
Senior User
Joined: Aug 2011
Posts: 213
Likes: 0
I found a diagram, it was the left pin.

Ever since I put on the new IPR, now my HPOP resevoir drains down a few inches overnight. I wonder if the new IPR is defective, or is it normal for it to drain down some?
 
Reply
Old Sep 24, 2011 | 02:00 PM
  #152  
427 fordman's Avatar
427 fordman
Hotshot
15 Year Member
Photogenic
Photoriffic
Joined: Feb 2009
Posts: 10,410
Likes: 77
From: Plankinton, SD
It should not drain down. It never did before the ipr change? That was the only change you did and the resevoir is now draining down? How far? I may not be able to answer why for sure but get a few more questions answered for others to help out hopefully.
 
Reply
Old Sep 24, 2011 | 07:47 PM
  #153  
DanS12's Avatar
DanS12
Thread Starter
|
Senior User
Joined: Aug 2011
Posts: 213
Likes: 0
The only thing I have changed recently was the IPR, and then I noticed the resevoir draining down. One night it was down 6 inches. Last night only about 2 inches.
Today I took it out for a spin and after about 5 mins of driving I was going about 40 mph and all of a sudden CEL light comes on, truck barely runs, after 10 seconds CEL goes off and truck runs fine.
The saga continues.
 
Reply
Old Sep 24, 2011 | 08:06 PM
  #154  
427 fordman's Avatar
427 fordman
Hotshot
15 Year Member
Photogenic
Photoriffic
Joined: Feb 2009
Posts: 10,410
Likes: 77
From: Plankinton, SD
I don't remember, have you gotten the codes read?
 
Reply
Old Sep 24, 2011 | 08:19 PM
  #155  
mq1shooter's Avatar
mq1shooter
Elder User
Joined: Feb 2009
Posts: 522
Likes: 0
From: Lawson, Missouri
If the truck starts.pop the hood and grab onto the PCM harness and wiggle the bundle and see if you can kill or make it hiccup.....seriously...
 
Reply
Old Sep 24, 2011 | 11:08 PM
  #156  
DanS12's Avatar
DanS12
Thread Starter
|
Senior User
Joined: Aug 2011
Posts: 213
Likes: 0
Wiggle the harness at the connector, or all over?
I haven't been able to read any codes yet. A friend of mine said he would come over this weekend, but haven't heard from him yet. I have tried three different scanners.
I'll check HPOP resevoir again tomorrow and see if it drained down.
 
Reply
Old Sep 25, 2011 | 08:18 AM
  #157  
mq1shooter's Avatar
mq1shooter
Elder User
Joined: Feb 2009
Posts: 522
Likes: 0
From: Lawson, Missouri
This post...

Originally Posted by DanS12
Okay, the last time the engine started I had disconnected the computer harness and loosened the other big harness next to it. So I did that again today, moved the wires around, and tried starting truck.
It started! I let it run for 10 mins and it restarted. It takes it several seconds to start, but I guess we'll see what happens.
This is a very uneasy feeling! I need to go diesel, but I don't know what the hell I did to make it run.
I did measure ICP volts through blue wire while it was running and it was 0.95 volts at idle.
the beginning of this post...this seems odd, Loose / intermittent wire? Connector to PCM pin(s)...?

Also, you might check here and other Diesel websites for members that #1) Have a AE scanner and #2) may be geographically close to you...
...My "no Start" thread from last year.. https://www.ford-trucks.com/forums/9...ml#post9401888
 
Reply
Old Sep 25, 2011 | 11:26 AM
  #158  
DanS12's Avatar
DanS12
Thread Starter
|
Senior User
Joined: Aug 2011
Posts: 213
Likes: 0
Going backwards!

HPOP resevoir down this morning 6 inches, so I crank truck until it is full, but no start.
Today I notice the Tach is not moving while I crank.
I put a new CPS on about a month ago from Oreilly auto parts.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Old Sep 25, 2011 | 12:13 PM
  #159  
427 fordman's Avatar
427 fordman
Hotshot
15 Year Member
Photogenic
Photoriffic
Joined: Feb 2009
Posts: 10,410
Likes: 77
From: Plankinton, SD
You need to get a ford or ih cps in there, those parts store ones aren't reliable at all.

Have you recently changed the oil and possibly lost the bypass in the filter housing?
 
Reply
Old Sep 25, 2011 | 12:31 PM
  #160  
DanS12's Avatar
DanS12
Thread Starter
|
Senior User
Joined: Aug 2011
Posts: 213
Likes: 0
No, haven't changed the oil in awhile. I did check the oil this morning though and it is about 2 quarts low. I thought I lost quite a bit when I forgot to put the HPOP res plug back in. It has started before when 2 quarts low. I doubt that would have anything to do with the tach not moving now though.
I don't remember seeing anything in the bottom of my oil filter the last time I changed it.
 
Reply
Old Sep 25, 2011 | 12:36 PM
  #161  
DanS12's Avatar
DanS12
Thread Starter
|
Senior User
Joined: Aug 2011
Posts: 213
Likes: 0
I just tried to start it again, after wiggling around the harness where the wires from the CPS go into it. Now my tach is reading rpm's again. Still won't start though. I have oil pressure on the gauge too. Guess I need to go get a couple quarts of oil, and make sure that isn't the problem right now.
 
Reply
Old Sep 25, 2011 | 06:44 PM
  #162  
oldbird1965's Avatar
oldbird1965
Fleet Owner
20 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2004
Posts: 20,419
Likes: 197
From: AZ
Club FTE Silver Member

Two quarts low is not going to make a difference. TJ said he has seen some trucks brought into his shop six quarts low.
 
Reply
Old Sep 26, 2011 | 12:37 PM
  #163  
RÖENTGEEP's Avatar
RÖENTGEEP
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Club FTE Silver Member

Originally Posted by DanS12
The only thing I have changed recently was the IPR, and then I noticed the resevoir draining down. One night it was down 6 inches. Last night only about 2 inches.
Today I took it out for a spin and after about 5 mins of driving I was going about 40 mph and all of a sudden CEL light comes on, truck barely runs, after 10 seconds CEL goes off and truck runs fine.
The saga continues.
There are a spring and check ball in the front of the block that control the flow to the hpop reservoir, maybe its bad or failing.

 
Reply
Old Sep 27, 2011 | 04:56 PM
  #164  
DanS12's Avatar
DanS12
Thread Starter
|
Senior User
Joined: Aug 2011
Posts: 213
Likes: 0
Well, thought I had found the problem. Truck would not start so I checked voltage at IPR 5 prong connector and there wasn't any, so I wiggled the wires and got voltage. I thought it was the connector. I got the truck running and I shook the connector and the truck died. Okay, I checked the voltage and the 12 volt signal was steady, but the 0.3 volt signal was all over the place, so I got rid of the connector and just soldered the wires together. Then the volts were nice and steady on the 12volt side and the 0.3 volt side. I take it for a spin, come back and it kept dying. WTF!
I go back and check the voltage again and now both wires are 12 volts plus. I wonder if this is a PCM problem or do I need to go back further into the harness. I guess I need to figure out where that voltage originates and check it there first before tearing up more harness. Does it come from the IDM or the PCM?
 
Reply
Old Sep 27, 2011 | 07:08 PM
  #165  
DanS12's Avatar
DanS12
Thread Starter
|
Senior User
Joined: Aug 2011
Posts: 213
Likes: 0
Well, I measured the volts after taking the pigtail loose from the IPR and the hot wire was 12 plus and the return wire was 1.3volts. I seem to remember it being 0.35 with KOEO. Is there any significance to this?
I appreciate everyones help.
 
Reply



All times are GMT -5. The time now is 03:21 PM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE