so i went to chip my ecu today...
 

well, i've spent about 4 hrs total and got almost nothing done. i put together my converter so i can plug in my laptop to the ecu. I got all that hooked up and i was trying to unsolder my chip, but no luck there. so i stopped and put everything back together. wanted to see if ECU Control would work. well then i found out that you need to chip the ecu for ECU Control to receive any data. And also i dont think my ZIF socket will fit onto my circuit board. So...it's been an almost worthless day. Any ideas about the ZIF socket? The chip has a cap and something else too close to it and im pretty damn sure than socket wont work. But, i'll probably be off to the store to get a solder sucker...since i had no luck with the wick. what a shitty day.

Re:so i went to chip my ecu today...
 

what ecu.. also i dont suggest sscrewing around with your own ecu get a spare.

Re:so i went to chip my ecu today...
 

Yeah, I got a spare one to mess around with because it would be my luck I short something out and have no other way to get around!!! But so far good luck.

Re:so i went to chip my ecu today...
 

well, now i've gotten a solder sucker and sucked all the solder out and it still wont come out. >:(

PM6 ECU.

Re:so i went to chip my ecu today...
 

is the chip glued down at all, its sitting extreemly close to the circuit board...in comparison with the other chips.

Re:so i went to chip my ecu today...
 

Use the wick and Radio Slack desoldering rion with the built in sucker bulb in tandem.

Put the wick over the pin you need to desolder, press the desoldering iron down so that the pin pokes (thru the wick) into the hole in the desoldering iron, hold heat there for ~5 seconds and suck. Lift the iron and wick off before you are entirely finished sucking, or else you get a little flow-back.

As the board starts warming up from desoldering, and as the wick gets more saturated in solder, you don't have to heat the joints as long.

Before you go to pull the chip, take some really delicate needle nose pliers and wiggle each pin to make sure it's desoldered. It either wiggles or clicks free + then wiggles. Otherwise you end up tearing free a pad/trace which is :(

The transistor that you think is in your way can be gently bent to the side and about 90 degrees... your socket will fit, just be very gentle.

Re:so i went to chip my ecu today...
 

As far as the "glue" that holds the socket down, be careful. There are a few traces towards the top of the chip that will lift if you just go pulling it out. I've found that if you start at the bottom of the chip, and slip a small flat head screwdriver under the chip, and SLOWLY start to pry it up, that it'll break the seal loose and let you wiggle the chip out.

The "bottom" of the chip points AWAY from the ECU harness connectors.

Re:so i went to chip my ecu today...
 

When working on electronics, make sure that you are grounded. If not, the electro static discharge that your body can give off can easily burn or short IC's internally. So just as a precautionary..

Instead of a solder sucker, get solder wick... workds much better..

SlowC

Re:so i went to chip my ecu today...
 

Sucker + wick = better than either alone.

<-- Joseph in cognito

Re:so i went to chip my ecu today...
 

i like to suck and clean my wick

Re:so i went to chip my ecu today...
 

Think we could keep the exploits of your monosexual gymnastics contained in some thread in General Discussion? :P

Re:so i went to chip my ecu today...
 

just got back from vacation. i've worked with electronics before. hell thats what im going to school for. tomorrow the dremell tool comes out and i am going to cafefully cut each post (on the top of the circuit board)...well first im going to try a hotter iron...this is a bitch in a half.

Re:so i went to chip my ecu today...
 

yeah man jason told me a great chip.

jam the wick under the iron and pull the wick TITE!!!

itll pull all the ---- out. then push the pin and itll come loose.

Re:so i went to chip my ecu today...
 

ok, so i hacked it with the dremel and it worked great. now that i've installed it back into the car using the ghettodyne NA BIN file it idles 1000 to 2000 rmp and jumps up and down, then stalls out. any ideas?

Re:so i went to chip my ecu today...
 

When I desoldered my chip, I first cut the old one out with a pair of small electromic dykes. Made everthing go much smoother. Then I either heat up each clipped pin from the back while a buddy pulls with a pair of electronic needle nose from the front, and then desolder. Almost imposible to screw up doing it this way and its pretty fast.

Re:so i went to chip my ecu today...
 

so, it's time to get a new ecu.

Re:so i went to chip my ecu today...
 

I've got this really neat tool that grabs ahold of the chip and you just squeeze and it slowly pulls the chip loose while you just slightly jiggle it.

Re:so i went to chip my ecu today...
 

Look on the resources section of the PGMFI board for ROM images, and get the stock 91si.bin. Load that onto a chip and see if you're still having problems...if you use the stock program, you can eliminate/verify that you've screwed something up during the chipping progress.

Are you throwing any codes? -Z