96 Bronco 5.8 L PCM replacement

[51504broncos]

I have a 96 Bronco with a 5.8L I have had several check engine codes come in and looks like I have a bad PCM. My question is.....is this something easy enough for a do it yourself guy to do or is is something requiring a pro to do?

Thanks,

Bryan

 

[miesk5]

yo Bryan,

Hopefully, you were able to do the tests I gave you and it is the PCM;

Removal & Installation in a 96

Removal pics in a 96 - Steve was swapping PCMs,

Source: by bossind (boss, Steve) at http://www.supermotors.net/registry/15991/71501

The best way to do this is through the drivers side wheel well by loosing off the plastic inner fender as shown

Pulling back the plastic inner fender you will have access to the computer harness, this requires a 10mm socket to remove. Next you remove 2-11mm nuts on ECU rubber gourmet, remove the grommet and pullout the ECU.

 

[51504broncos]

yo Bryan,

Hopefully, you were able to do the tests I gave you and it is the PCM;

Removal & Installation in a 96

Removal pics in a 96 - Steve was swapping PCMs,

Source: by bossind (boss, Steve) at http://www.supermotors.net/registry/15991/71501

The best way to do this is through the drivers side wheel well by loosing off the plastic inner fender as shown

Pulling back the plastic inner fender you will have access to the computer harness, this requires a 10mm socket to remove. Next you remove 2-11mm nuts on ECU rubber gourmet, remove the grommet and pullout the ECU.

Thanks for the info....my Haynes Manual says the PCM is located in the cab behind the kick panel. Looking at your instructions it doesn't appear that you need to remove the kick panel. My manual also says to remove the 60 pin connector inside the engine compartment first. Thoughts??

 

[miesk5]

yo Bryan Yes, no need to remove kick panel

Remove from eng bay as Steve shows and as does Ford

 

[51504broncos]

yo Bryan Yes, no need to remove kick panel

Remove from eng bay as Steve shows and as does Ford

Yo Miesk5....Thanks a milliion. And do I understand correctly that it should just be a plug in and go swap with no reprogramming required?

Bryan

 

[miesk5]

yo

Yes, plug and run

Get PCM from yard queen for dame year and engine and trans w/$ back guarnatee;

can buy Cardone and from other sources; see my site under Parts section and use browser seach for PCM

and then for EEC

 

[miesk5]

Get Ford part number from PCM

or VECI

Vehicle Emission Control Information (VECI) Decal; Contains Vacuum Diagram & Calibration Parts List for 88 & UP. On-Line for Free at Ford. Click "Quick Guides" in left panel; Scroll to & CLICK VECI Labels "Provides Vehicle Emission Control Information (VECI) and a related calibration parts list." Enter applicable info (need to know your Calibration number from your B-pillar sticker). Vacuum Diagram is the same as the one on the core support or hood or air filter cover. Suggest Right Clicking this Hot Link & Open in New Window

http://www.motorcraftservice.com/

 

[51504broncos]

Get Ford part number from PCM

or VECI

Vehicle Emission Control Information (VECI) Decal; Contains Vacuum Diagram & Calibration Parts List for 88 & UP. On-Line for Free at Ford. Click "Quick Guides" in left panel; Scroll to & CLICK VECI Labels "Provides Vehicle Emission Control Information (VECI) and a related calibration parts list." Enter applicable info (need to know your Calibration number from your B-pillar sticker). Vacuum Diagram is the same as the one on the core support or hood or air filter cover. Suggest Right Clicking this Hot Link & Open in New Window

http://www.motorcraftservice.com/

Hello Meisk5,

Well, I am still having issues with my Bronco. I have done the following things since our first discussion. I have replaced the O2 Sensors, replaced the PCM, replaced the Fuel Filter and removed and cleaned the Mass Air Flow Sensor. I have also ran 2 cans of Seafoam thru the system. The most recent change is the fuel filter. I cleared the code after replacing the filter and the check engine light has come back on giving me the following 2 codes.

PO171 Bank 1 lean

PO174 Bank 2 lean

I have looked for a vacuum leak and cannot find one to the best of my knowledge. I am leaning towards replacing the Mass Air Flow Sensor as my next step but quite frankly I am kind of stumped. Can you offer any suggestions or assistance. I can tell you that the Bronco is running lean for sure and down on power. I especially notice it when on the freeway and I go to put my foot into it....it is just bogging down and feels restricted. I also notice that there are times when I start the truck that it acts like it wants to stall out. I shut it off, turn the AC switch to off and restart it and it usually starts and smoothes out. Do you have a diagram of the Vacuum line layout in the 96 just so I can make sure I am checking all possible areas? If so could you include it with your reply? Thank you for your help.

Regards,

Bryan