since the A9P ECC I have is not working right, I wanted to try to repair it myself. Anyone know how to get that coating off the circuit board or what the coating actually is?
 |
-
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes. -
not sure what the Ford ECMs in particular use, but I've gotten that stuff off of other boards with either isopropyl alcohol or windex.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers -
Most of the time the coating on PC boards is a thin epoxy resin. Nothing will really dissolve it, but you can gently scrape small areas away to replace componants if you know they are bad.Comment
-
that's the problem... to test the components I need to remove the resin.Originally posted by meandad View Post
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
-
oh its epoxy? I've seen some that were more like a silicone spray. It was rubbery but it dissolved when trying to clean it with Windex. That was on a smoke detector at work, and the dissolving coating discovery was more of an accident than anything else. I was mostly trying to get the crap off the photo sensor, but found that the board coating went away almost immediately when hit with the cleaner. The hard epoxy coatings, no idea. Epoxy is pretty tough crap.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
-
this is kinda rubbery... it may be a silicon base. I just don't want to try removing it with stuff I have on hand without trying stuff that won't melt the connector as well (like acetone). It's not epoxy.
resin is the wrong word to use.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
-
after a closer inspection... pin 1 on the MCU on the board is pretty burnt. I'm guessing there's either an overvoltage condition on a regulator, or there's a short in the controller. either way, something has burnt that chip a little. since the ECU works to a point, I'll keep it around just in case. The burnt pin is also connected to pin 5 on the ECU connector (and since fordfuelinjection.com is down due to legal action I can't seem to find a reliable source for ECC pinouts to find out what pin 5 is on an A9P). From what I can find, that seems to be a reverse signal/vss input. Not a dire requirement for running.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
-
why did you change it in the first place? my brothers towncar is doing weird things.
1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
1987 Lincoln Mark VII 5-speed (Errand runner)
1989 Mercury Grand Marquis (Base Runner)
2007 Lincoln Town Car Signature Limited (Hustlyn)
2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)Comment
-
it won't talk... no diag capability and it was idling rather badly. new computer idles much better after finding out the PIP sensor in the dizzy was bad and replacing the dizzy. The old one might idle fine now, but since it won't talk, it's only good as an emergency band-aid.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
-
indeeeed! i cant clear codes from the towncars EEC. after replacing PIP(whole dizzy, thats a new spare) and air charge temp sensor. also runs like poo. gonna get another computer to quickly try and need to check the harness. are you gonna try and patch your old EEC?
1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
1987 Lincoln Mark VII 5-speed (Errand runner)
1989 Mercury Grand Marquis (Base Runner)
2007 Lincoln Town Car Signature Limited (Hustlyn)
2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)Comment
-
nope... looks like the part that's done in is one of the ICs. those are hell changing out, much less getting a hold of a new one. I'll probably get a reman if it comes to it since I have it as a core now.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
-
just swapped ECMs on the towncar. codes gone and runs better. looks like i got my self a spare EEC too lol
1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
1987 Lincoln Mark VII 5-speed (Errand runner)
1989 Mercury Grand Marquis (Base Runner)
2007 Lincoln Town Car Signature Limited (Hustlyn)
2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)Comment
-
Its called a Conformal coating, its used to protect the boards & parts from moisture.
Comment
Comment