Hello all,

Just wondering if the driver's seat has to be removed to get the ECM out?
I'm getting that high idle intermittently now.  Some days it is just fine. 
I have observed the failure with the air cleaner off and the linkage is not binding and I'm not really buying the leaking bushings on the Throttle bodies. There is free movement and when sprayed with starter spray no change in idle.  I know it is a common problem with 82s but, do not think it is my main problem.  I am happy with the vacuum system.  I have checked the wiring to the O2 sensor and tried several with the same code 13.  So, I want to look into the ECM for connections and wiring.  It is intermittent.  A vacuum leak would not be.  A crack or solder joint failure on the PC board could do this kind of thing.  I think anyway.  Since it cooled off from the summer temps, I have had a string of days that it runs correctly.  Starts at 1200 rpm then slowly (a couple of minutes) drops to 700-800 rpm. Past few days the start is up to 1500-2000 rpm and stays there.  I'm thinking the ECM is worth a look. 
Thanks
Keith


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Nobody ever waves when I'm driving the Explorer.
K Woody

Wow, Chip, Keith i thought the ECM was behind the glove box? I ordered a new performance chip is that the same unit?

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Hey Chip and Kenton,

The performance chip is most likely an EPROM IC. It would go in the ECM replacing the original IC.  I can see the ECM.  It does look a bit like a contortion to get it out. I'll try with the seat in first.   Thanks Chip.

I've been working too much on the garage and not enough on my baby. Ha


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Nobody ever waves when I'm driving the Explorer.
K Woody

Yep, the chip is in the ECM under a removable metal plate.  It should be recessed in a plastic cradle and plugged into the chip socket on the circuit board.  When you install the performance chip you will use the "cradle" to help pull the original chip out of the circuit board.  The new chip is then placed in the cradle and pushed back very carefully into the chip socket, the cradle acts as a guide to reinserting the chip.
Crossfire19822011-02-10 16:48:49

Hope this info helps Found Somewhere

Robert, thanks for the pic.! It sure will come in handy when I finally get the chip!

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When you replace the chip be certain that you do not put in in the wrong way.  The entire ECM will be damaged if you do.

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(click to see a larger image)

You CFI and ECM guys take a look at this info I found surfing

That's a really spot-on page, Bob! Thanks for the link. Too bad the link to the larger pics of the wiring diagrams is no longer working...
Good stuff!


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Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Excellemt pictures Bob!!  You da Man!!!

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(click to see a larger image)

Thanks Chip for the guidance.  I think it is really worth the effort to clean the connectors and sockets.  In a round a bout way, I've learned a lot about how the CFI works.  

[QUOTE=rraider1]You CFI and ECM guys take a look at this info I found surfing [/QUOTE]

Thanks Bob R for the info...  I have found all that information in different places but, this is a great all in one source.  If I can get to the dump, shop and do a dozen more things first, maybe I can get to use the new garage to work on my baby....  I have to put up the C3VR calendar first!

Keith


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Nobody ever waves when I'm driving the Explorer.
K Woody