computer ECM pcm capacitors.
 

I have a 92 f150 and wanting to change the capacitors before they give me problems.

From what I gather I need one 10uf and two 47uf capacitors, but what voltage do you all recommend I use?
And when you use mouser website they ask several questions and I don't know much about these things, so what's the technical name for these capacitors?

Thanks.

Here is what I use in my PCM Computers:
http://i54.photobucket.com/albums/g9...psbicvenk0.jpg

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Thanks, I will order them tonight.

Note on mine it takes 2 of the #1 and 1 of the #2.
The order was for 2 PCM Computer + extras.

that image should be a sticky ... along with a lot of your other images, subford.
thanks for all you do !

Making it a sticky would save a lot of time and questions.
Just ordered enough to do two computers.
Thanks subford.

Alright well I posted in the wrong thread, but I'll post pics here too.https://cimg0.ibsrv.net/gimg/www.for...c3ff6497fa.jpgECM # out of a 92 f150.
https://cimg5.ibsrv.net/gimg/www.for...32cac58826.jpgOnly two capacitors. I already removed the one lower right.
https://cimg2.ibsrv.net/gimg/www.for...7ff7827e61.jpgGoing to clean the board as you can see it has a lot of dirt in it.
https://cimg8.ibsrv.net/gimg/www.for...d0081eb2f0.jpgOld vs new
https://cimg8.ibsrv.net/gimg/www.for...9be5a3d247.jpgThe negative leg has a yellowish discoloration on it.
https://cimg9.ibsrv.net/gimg/www.for...ae69fce8d6.jpg
https://cimg6.ibsrv.net/gimg/www.for...4af06d00e9.jpgNew cap installed.
I ordered a different cap for the other one, it's a 3.3uf cap and I ordered what most order for these ecms, so have to wait a few days for that one.

Hmm, looks like a 1990 date on the circuit board. I didn't think the 2-capacitor boards arrived on the scene that early. Also looks like a cast AL case along with a 1992 part# on the calibration sticker. There too, I didn't think those appeared until later in the 90's.

Things that make you go Hmmmmmmm.....

Do you think it's not the original ECM?

I suspect that's exactly what it is. Just looked through some of my spare PCM's, and 1994 seems to be about when the switch-over to the cast AL case with a simple lid that comes off with six hex-head (6mm?)bolts.

I have a replacement PCM that came out of a 1991 F-150 and it looks just like yours.

Interesting that the casting date is indeed 1992. Maybe they didn't feed these things into production in an orderly way.

I was just guessing at the size being 6mm. It's actually 5.5mm if a 7/32" socket works.

Not sure what you're saying regarding finding the ALuminum. It's what the later cases are made of rather than the stamped galvanized steel of the earlier ones.

OK now I see what your saying, aluminum casing.
I didn't read close enough.

I'm just assuming this is the OEM ECM to my truck.
The PO put in a roller 5.0 motor when I first bought it.
Didn't know that till I pulled it because the #6 piston cracked.
So not sure if they used a different ECM too.

Photobucket link is toast. Car to post up the order again? Newbie with an ECM needing capacitors asking.

Sure, here it is:
Attachment 286311

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