I dig the lettering for 5.0 on ur intake. Looks good. If i knew how to add a picture
... i can send you one of my 95 that has a whole lotta nothin there. Lol

 

Wild idea here.. Try checking for 5volt reference from either the TPS or EVP. I'm unsure what other sensors have 5 volt. If your voltage is below spec, I would suspect bad caps inside the ECM. Also, a faulty alternator will present the same problems. I would have it checked to ensure there are no bad diodes. The alt could be running just enough to charge the battery. A bad 5 volt reference signal to various sensors can also trigger symptoms you're describing. Any of these scenarios can complicate resolutions.

 

I have gotten codes for low reference voltage in the past. Voltage not what expected. Etc. Every day that goes by i think more and more its a bad puter. Been actin messed up for 2 years. No one has been able to figure out why. But no one has ever checked the puter. I found an obd1 diag port inside the truck cab... i found that odd.

 

I just hit autozone's web page... I cannot tell the difference between the ECC's aside from fed or cali emissions. Will I find a tag on my puter to correspond to a part number ?
How do you guys feel about Cardone reman puters ?

 

yea you bet, once you pull it out

 

Pulling it out is a b!tch isn't it? Lol

 

depends, its easy to disconnect, its fighting to get it out, but if you remove your inner wheel well arch halfway, its a piece of cake.

 

I think the inner fender will be the biggest pain... almost tempted to just cut an access panel. Lol

 

water on the backside is never a good idea, unless you can properly seal it up.

 

At some point they eliminated the external BAP sensor (with air meter trucks, MAP with speed density trucks). They must have moved it into the engine computer itself because I'm pretty sure it is an important part of the overall EFI controls...

 

Sometimes due to the location of the engine computer on these trucks, water can run down the fire wall and seep into the computer compartment. Especially if the cowl/hood seal at the top is bad or gone. Depending on the amount it will start rusting and corroding things. Not good and visible when you get the PCM removed. But just because you see some crud on the case it does not mean it is bad. Just maybe..

 

Most of the crud drippage happens on passenger side. Truck started life in kentucky went to michigan for 2 years. And has been in florida for last 2 years. I'm honestly afraid of what i will find down there

 

Picture?

In the early speed-density trucks, the MAP served as the BAP as well. It'd simply survey the atmospheric pressure right before start up.

In Mass-Air, knowing the barometric pressure is not important. As MAFs physically measure the mass of the air going into the engine. The barometric pressure is mainly used to adjust spark tables and change shift points in MAF vehicles. Ford later figured out how to derive the atmospheric pressure from the MAF, and ditched the BAP completely.

 

Yeah, mine does not have map or the bap i checked wiring. Vac routing all that.
Even though i think it may very well be the engine puter. I am still changing upper plenum gasket
Just so i can pull off smog pump easier. And i bought 11' of vac line to replace old factory hard lines.
Its just a bit chilly today and tomorrow cause of the storm front. So i am going to see about pulling access panel off sunday or monday to check the puter.
Should i be looking for blown caps on the board or certain resistances?


P.s i don't know how to add a picture or else i would put several up of the engine compartment as well. Lol

 

New ground lines are great, but, you still have to have a damned near perfect ground going back to the negative battery post.
That is where most folks (including me) don't get it. !!!!!

And,
No, I was fighting a "lean condition" with my truck.
Cleaning ALL of my body, frame, block grounds made my truck "wake up" and run like as it was designed.........ie. no band-aid fixes to stop the lean bucking.

Good on you for considering the EEC as a possible culprit.
A "bad" internal ground in the computer or the leaking capacitor thing happening could very well be the answer you've been searching for.
Bad EEC's seem to have symptoms that are all over the board.

You'll get there........

Bob