I have a 7.3 Diesel, F350 -1997, I have been having trouble with the glow plug relay and the glowplugs. Replaced all the glowplugs and relay and still get the code 1396. Rechecked the glow plugs and may have one out of spec. What is the specific glow plug range hot and cold.

 

Resistance from the glow plug terminal to ground is 1-2 ohms depending on engine temperature, and from the glow plug relay output terminal to the harness connectors 0-1 ohms.

 

Has anyone had to reprogram PCM to get rid of the code.
There is a TSB that says only 97 California models might show the code even though everything is fine.

 

Thread moved to the 94.5-97 Diesel Forum.

 

CLICK HERE to go to an excellent article on the glow plugs, diagnosis and repair. One thing has changed, the part number from AutoZone for the glow plugs is now ZD-11.

If you do replace the glow plug or plugs I strongly recommend you use the factory plugs from Ford, made by Beru (the Autozone ZD-11 comes in a Motorcraft part bag with the Ford part number on it). Whatever you do, stay far, far away from Autolites. They have a reputation for occasionally swelling or breaking off in the head with sometimes major engine internal damage the result.

Dave / Believer45

 

I do more searching and reading here than posting but after the last week or so I had to post.

I was looking for new batteries and got a good lead here, the Int. Megatrons are nice.

I'm in southern Mass and have had hard cold start troubles this year, hence the new batteries. When that didn't do it glow plugs came right to mind, so I popped on last night and there was a nice premade post with good info and a great link. Thanks!

So today it was off to the dealer for the relay and glow plugs. I know they're cheaper elsewhere but I want OEM parts just to be sure.

So I guess it shows that a seach and some reading cuts down posting the same question repeatedly. I've run forums before and answering the same ? repeatedly gets old quick.

Anyhoo, tx again and keep posting 'cause I'm still reading.

 

did you get rid of you 1396 code becasue I am haveing the same issue

 

Bear with me on this as I'm going off memory on this. I recall that 1396 refers to GP Monitor Fault Bank #2. I think that is one of the codes that I have had along with another code, (Don't recall which one) for ever.

Ford put out a TSB re this very issue stating that these code could be "Burned Into Memory" and to correct this issue take the vehicle to the dealer and they will "Re-flash" the computer.

I went to my local dealer armed with the TSB in hand and they said OK. They hooked my truck up to a machine where it sat unattended for an hour. I could see the truck and the equipment but was not allowed in the service area.

About an hour and a half later my truck was brought to the front and I was told that the computer already had the latest upgrade so there was nothing that they could do.

I pointed out that the TSB doesn't address the latest upgrade it addresses the re-flashing because of the specific codes that were/are burned into memory. Again I was informed that the computer already has the latest upgrade. I knew at that point I was once again dealing with a moron particularly when he presented me with a bill for $95.00.

To this day my CE light is always on, I just check the codes periodically.

I have that TSB bulletin stashed away somewhere and will attempt to find it for you.

Rog

 

Dave
The "Click Here" link no workie
Rog

 

This was the best that I could get it to copy. What is left out is a schematic of the GP & GPR Connections. I tried to get a copy from a different area of the GP/GPR connections with neg results.
(Blank square) Perhaps someone else can post it.

I foregot to add to my first thread that I asked the service Mgr if they had cleared the codes and he replied that they could not legally do that until the problem was repaired. Doah: (Think RE-FLASH?)
Rog

MALFUNCTION INDICATOR LAMP (MIL)—MIL Article No.
ILLUMINATED WITH DIAGNOSTIC TROUBLE CODES 98-15-1
(DTCS) P1391, P1393, P1395 AND/OR P1396 STORED
IN MEMORY—F-250 AND F-350 CALIFORNIA ONLY
AND ECONOLINE—VEHICLES WITH 7.3L ENGINE
FORD: 1997 F-250 HD, F-350
1997-1998 ECONOLINE
CALIBRATION 2. As in all electrical circuits, clean and properly
Refer to Recalibration Cross Reference chart for tighten connections as required. The proper
applicable calibrations. torque on the smaller nuts on the glow plug
relay is 2.3-4.5 N•m (20-40 lb-in). The proper
WARNING torque on the relay’s high current nuts and the
THIS MODIFICATION IS AUTHORIZED ONLY FOR shunt nuts is 6.2-7.3 N•m (55-65 lb-in). When
THE LISTED ENGINE(S). PERFORMING THIS servicing the glow plug relay, make sure the
MODIFICATION ON OTHER ENGINE appropriate nuts and washers are used. Refer
CALIBRATIONS IS UNAUTHORIZED AND COULD to the PC/ED Service Manual to verify that all
CREATE LIABILITY UNDER APPLICABLE three (3) sensing wires are in the proper
FEDERAL OR LOCAL LAWS. location (Figure 1). After making any repairs to
the glow plug system where any codes are ISSUE present, be sure to clear the codes and verify
Some 1997 7.3L DIT F-250/350 (California only) the repair with the Key On Engine Running
and Econoline vehicles may exhibit a check engine (KOER) glow plug test.
light on and possible Diagnostic Trouble Codes
(DTCs) P1391, P1393, P1395, and/or P1396 stored 3. If the concern still exists, reprogram the
in memory. These vehicles may or may not exhibit Powertrain Control Module (PCM) using the
other driveability symptoms such as hard starting, Service Bay Diagnostic System (SBDS) or New
long crank time, no start, etc. Generation Star (NGS) Tester. Refer to the
following Recalibration Cross Reference Chart
ACTION for the correct PCM calibration.
Refer to the following information when diagnosing
these conditions. Understanding the on-board NOTE
diagnostics will help in diagnosing the above PCM REPLACEMENT IS NOT AUTHORIZED BY
concerns. THIS TSB. REFER TO THE POWERTRAIN
CONTROL/EMISSIONS DIAGNOSIS (PC/ED)
SERVICE PROCEDURE SERVICE MANUAL FOR APPROPRIATE
DIAGNOSTIC PROCEDURES IF PCM HARDWARE
1. Perform normal diagnostics found in the 1997 CONCERNS EXIST.
Powertrain Control/Emissions Diagnosis
(PC/ED) On-Board Diagnostics II (OBD-II) RECALIBRATION CROSS REFERENCE
Service Manual and service as required. Old Part New Part
Old Number New Number
Calibration (-12A650-) Calibration (-12A650-)
7-89N-R10 F7TF-PD 7-89N-R11 F7TF-PE
7-90P-R12 F7TF-RE 7-90P-R13 F7TF-RG
8-90Q-R11 F8UF-AKB 8-90Q-R12 F8UF-AKC
8-90N-R11 F8UF-AJB 8-90N-R12 F8UF-AJC
PROOF 10-MAR-00 70-0031 70-0031 PAGE 1
Article No. 98-15-1 Cont’d.
Obtain an Authorized Modifications Decal (FPS Bumper Warranty Coverage
8262 - obtainable through DOES II, 25/pkg) and list And Emissions Warranty
the date, dealer number, and summary of Coverage
modifications performed. Select a prominent place OPERATION DESCRIPTION TIME
adjacent to the Vehicle Emission Control Information 981501A Clean And Tighten 0.7 Hr.
Decal suitable for installing the Authorized Connections - Econoline
Modifications Decal. Clean the area, install the 981501B Clean And Tighten 1.1 Hr.
decal, and cover it with a clear plastic decal shield. Connections And
Reprogram Powertrain
Control Module (PCM) -
Econoline
981501C Clean And Tighten 0.5 Hr.
Connections -
F-250HD/F-350
Reprogrammed Powertrain Control Module 981501D Clean And Tighten 0.9 Hr.
(PCM) per TSB 98-15-1 Connections And
Reprogram Powertrain
Control Module (PCM) -
F-250HD/F-350
DEALER CODING
CONDITION
BASIC PART NO. CODE
RECALEM 42
OASIS CODES: 602300, 603300, 698298
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under The
Provisions Of Bumper To
PAGE 2 70-0031 70-0031 PROOF 10-MAR-00
Figure 1 - Article 98-15-1
PROOF 10-MAR-00 70-0031 70-0031 PAGE 3

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<o> </o>
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DTC Description<o></o>
P0380 = Glow plug circuit malfunction<o></o>
P1391 = 4 Glow plugs open right bank<o></o>
P1392 = Glow plug circuit high input bank No. 1 (right)<o></o>
P1393 = 4 Glow plugs open left bank<o></o>
P1394 = Glow plug circuit high input bank No. 2 (left)<o></o>
P1395 = 1 to 3 Glow plugs open right bank<o></o>
P1396 = 1 to 3 Glow plugs open left bank<o></o>
P1397 = System voltage out of self test range<o></o>

<o> </o>

 

thanks for the info my PCM has been reflashed by DPtuner but I had the check engine light before and still get it. There has to be something I am missing so far I have spent 2500.00 replacing parts at dealer and my self. Putting on new shunt Friday.

 

ZD11 is the Motorcraft part number, the OEM part number is F4TZ12A342BA


Ed

 

I got rid of the 1396 code by replacing gasket under value cover but now I am getting a 1391 and 1393 code HELP

 

does anyone know if I have to change the wiring on my 97 CA deisel GPR if I had it re flashed Federal non CA and if so which wires do I disconnect.

 

Not sure a re-flash to 49S to CA is doable. They have different injectors, GPR (shunt) + other things I don't remember.

CLICK HERE for a TSB on your problem