1994 Ford F350 5 8L EEC IV Repair 

Thank you. I hope that it helps to resolve your issues.

I am glad that it was helpful.

Hey, sorry for the delay. I don’t have experience with that engine, but I would imagine that the EEC would be in the same location and removed in the same way.

Same location no matter what engine you have

Hi Chris, Thanks for watching. I removed the conformal coating manually. I used a micro spatula and carefully scraped it back. There is most likely a better way, but this is what I did. The capacitors I purchased were: 2 ea., A9341, 47uf, 16V, electrolytic, 105 degrees 1 ea., A9332, 10uf, 43V, electrolytic, 105 degrees Please note that another viewer commented that I left the legs too long and they will be more prone to break. If I have to do this again I will take his advice and solder in the capacitors closer to the board. Good luck. Kirk

@@actionj2k6 thank you sir!

@@actionj2k6 una pregunta en que parte esta uvicada Esa parte tengo una 97 Ford f350 5.8 XLT y ocupo Saber donde esta uvicada Esa parte alomejor me puedes ayudar Gracias

@@wilfredomaldonado1779 Hello Wilfredo, if I understand correctly you are asking where the computer is on a 97 F350. This I do not know. I believe that 97 is a newer generation.

@Kirk Jackson it's drivers side firewall remove inner fender to pull ecu out engine compartment

Hi Rudy, thanks for your question. To be honest I do not know. I researched my issue and found multiple forum threads that indicated the leaky capacitors as the cause. I finally jumped in and took you all for the ride. I suggest a Google search might result in others that have had similar issues and their solutions. Good luck!

Ecu has nothing to do with temperature or other warning gauges. The temperature sending unit operates the gauge . Similarly the oil pressure sending unit operates the oil pressure gauge. The coolant temperature sensor tells computer what temperature coolant is . Air charge temperature sensor tells computer the intake air temperature . The map sensor for intake for intake vacuum . And maf sensor for air flow on maf systems. Remember sensors work with computer, sending units work with gauges

Most of these trucks read just into normal range ,unless outside temp is really hot and humid and ac is on

Rudy, You may have a failed open thermostat. I had that happen on my f250hd 5.8L, you can order thermostats as a failed open, failed closed or Std. make sure you get a gasket and sealant, scrape the surfaces clean and remember which end was in the motor side of the housing when reinstalling or just take a picture while taking it apart.

could be a fan clutch stuck running.

Access through the drivers side wheel well. The ECU is in the cab, but is removed through the firewall, from the wheel well.

Thank you Nathaniel. I was not aware of this. Next time I take the ECM out I’ll look for evidence of cracking.