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Bronco II Ford Bronco II

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Old Mar 23, 2005 | 10:28 AM
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Question trans problem

I just got my 86 bronco2 back from the trans shop and its still got problems.I took it back and the guy says its not locking out,he replaced the lockout solenoid but that didn't work,he says its electrical..either the computer needs to be replaced or a wiring harness has a short..I paid $1842.00 for the work and now I'm tapped out...any ideas how I might fix this myself?? all help appreciated thanx
 
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Old Mar 23, 2005 | 01:24 PM
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Do you have any idea what diagnosis has been done? TCC override circuit (that's usually the official name on wiring diagrams) is a pretty simple circuit. Get a wiring diagram, see if the solenoid is getting 12V with the key on, then check to see if the computer can ground/is grounding the TCC solenoid (Output state test is useful for this, see Ken00's tech info post on pulling EEC-IV codes or "output state test" at www.dalidesign.com/hbook/eectest.html).
 
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Old Mar 23, 2005 | 03:21 PM
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thanx Mr.Shorty...but that may as well be written in chinese and the drawings hieroglyphics.....I'm somewhat of a retard when it comes to that computer code stuff..is there a simple course for dummies available anywhere? I would like to learn it if possible...especially when the auto-electric place is tellin me $75 an hour just to look at it..min $100
 
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Old Mar 23, 2005 | 03:53 PM
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How hard..or is it even possible... to maybe get a computer from a junker and replace the faulty one??
 
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Old Mar 23, 2005 | 04:52 PM
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You could conceivably get a computer from a junkyard truck. Of course, if the computer isn't at fault, then you've wasted $30, $50, or whatever they charge you. The correct way to do it is to diagnose the circuit and replace what has failed.
I'm somewhat of a retard when it comes to that computer code stuff..is there a simple course for dummies available anywhere?
Have you tried to read codes? I won't consider you a "retard when it comes to computer code stuff" unless you refuse to try. I'll admit that it seems intimidating. I was intimidated when I first tried. But I found that by following the instructions and giving it a try, it isn't that difficult.

If you don't want to try, then you may be farther ahead to pay somebody $75 an hour to diagnose it properly. Along those lines, why can't the transmission shop (to whom you have already shelled out $1800+ presumably for a rebuild) diagnose this? It should be well within their capability.
 
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Old Mar 23, 2005 | 07:31 PM
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the trans shop thought it was the cut out solenoid which they replaced..that wasn't it they are saying its the computer or a wiring harness...they said they scanned it to find that out.....you are right about the code thing,I'm gonna have to learn how if I'm going to keep this bronco going (its got either 190 or 291k miles but I really like it) by the way ...where is this computer located on an 86 bronco2 2.9?
 
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Old Mar 23, 2005 | 10:46 PM
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Originally Posted by dogg16
the trans shop thought it was the cut out solenoid which they replaced..that wasn't it they are saying its the computer or a wiring harness...they said they scanned it to find that out
They scanned it and... they couldn't interpret the results?? They were too lazy to put a voltmeter on the CCO circuit?? It really isn't that difficult.
.....you are right about the code thing,I'm gonna have to learn how if I'm going to keep this bronco going (its got either 190 or 291k miles but I really like it) by the way ...where is this computer located on an 86 bronco2 2.9?
The computer is located behind the passenger kick panel to the right of the passenger's feet, in front of the door, below the glove box. The self-test connector is under the hood, between the air filter housing and the heater fan housing. If it hasn't been used in a while, it could be tucked down in there. If you want to really do any diagnosis on these engines, you almost have to be able to perform the self-tests.
 
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Old Mar 24, 2005 | 07:10 AM
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what do I need to buy..what plugs into the self test outlet?a scanner?
 
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Old Mar 24, 2005 | 10:16 AM
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I prefer to use a jumper wire/paper clip/piece of bailing wire and a $3 analog voltmeter. You can buy more expensive code readers/scanners, but they can't give any more information. Jumper wire connects between STI and SIG RET or ground. Voltmeter hooks up to positive battery cable and STO. Diagrams are available in the above references.
 
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