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installing a new PCM

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Old Mar 22, 2004 | 11:14 AM
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Default installing a new PCM

how hard is it to install a new computer into the car? any suggestions?
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Old Mar 22, 2004 | 02:43 PM
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It takes all of 10 minutes. 2-10mm bolts and the 4 bolts for the wiring harness connectors.

My local chevy dealership charged me 360 dollars labor for this very difficult task after they charged me 375 for a new pcm
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Old Mar 22, 2004 | 03:14 PM
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let me be more specific....not the pcm, but alllll teh wires that run into the pcm. i need those changed
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Old Mar 22, 2004 | 03:29 PM
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so you need a new wiring harness....

Sorry, if you can't do it your self, your going to get into $500+ labor charges.

Ryan
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Old Mar 22, 2004 | 03:32 PM
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ok..well not about to kik 500+ anywhere. what is the professional way of binding two wires together that were cut?? sualdering i think? how would i go about doing this
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Old Mar 22, 2004 | 03:37 PM
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what exactly is wrong with yours now?

solder, heatshrink, is the best/easiest repair

the best repair would be to replace the whole harness with a replacement one. But that is simply not cost effective for a simple broken wire. But if somebody cut the connectors off the computer, i would consider that, before soldering 100 wires together.

you could replace the actual wire that is broke , but that requires special crimpers, special pins for the computer, and sensor end, and taking the old harness apart, and retaping it back together when your done.

Ryan
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Old Mar 22, 2004 | 03:43 PM
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ok here it goes. i had guages put in my air vents. the tach wire runs thru the vent, thru the firewall, over the intake, and over to the PCM where it is spliced in to the factory wire for the guage cluster tach. well i was havin problems and took teh splice apart. this now leaves the wire for my guage cluster tach not-working. i pulled some of the insulation off of both ends of the wire and wrapped tehm together with my fingers....
and covered it with electrical tape for now. i want to connect these two wires the right way without having to twist them together....and then put some form of insulation (electrical tape) over it to keep it safe.
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Old Mar 22, 2004 | 03:52 PM
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oh, thats easy to fix right. I just did that on a friends formy the other day.

since the wire is cut, slide some heatshrink on the wire, make a good mechanical connection by twisting the wire, heat the wire with a solder gun, and let the solder flow through the wire.

Once it cools slide the heatshring over the connection, and apply heat.

if you don't have enough room to slide the heatshring over, and solder, the pin comes out of the computer harness easily. just take the gray cover off, and pull back on the retainer, slide the pin out, slide heatshring over the connection, and put the pin back.

But since yours is cut, you should be able to just slide the heatshrink over, and solder, and slide it back on.

the car i worked on, the wire was not cut, so i did it that method, it was just stripped, and tried to attach a tach wire to it

Ryan
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Old Mar 22, 2004 | 03:54 PM
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where can i get the supplies. i dont have a soldering gun, or heatshring? do you mean heatshrink?
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Old Mar 22, 2004 | 03:55 PM
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yes, i edited my post.

radio shack should have everything you need, and cost about $10 $7 for the soldering iron, and like $3 for the heat shrink.

Ryan
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Old Mar 22, 2004 | 03:56 PM
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thanks a bunch
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