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3-4 shift Solenoid?
- Thread starter KJMac
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MrShorty
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- 92 XLT and '87 Bronco II
Assuming this is on your '93 listed in your profile.
It depends on the nature of the fault. The EEC-IV computer isn't very sensitive to faults in the shift solenoids. From what I've seen, there are two cases that will trigger a shift solenoid code on your A4LD: 1) A full open in the circuit or 2) a short to ground. No code means that, as far as the computer is concerned, the electrical circuit is intact. It will be up to you to determine to your own satisfaction if that is sufficient. It's a fairly simple DC circuit where the computer acts as a ground side switch, so it shouldn't take much to verify the circuit with a voltmeter and a wiring diagram.
It depends on the nature of the fault. The EEC-IV computer isn't very sensitive to faults in the shift solenoids. From what I've seen, there are two cases that will trigger a shift solenoid code on your A4LD: 1) A full open in the circuit or 2) a short to ground. No code means that, as far as the computer is concerned, the electrical circuit is intact. It will be up to you to determine to your own satisfaction if that is sufficient. It's a fairly simple DC circuit where the computer acts as a ground side switch, so it shouldn't take much to verify the circuit with a voltmeter and a wiring diagram.
KJMac
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- `93 EB
sorry about that! yes it is on my `93 EB.
The TC is locking up...45-50 in 3rd gear. I've
read on here it could be a stuck valve? should I
run something through the trans.? I saw something
about a plugged screen.....filter?
thanks!
The TC is locking up...45-50 in 3rd gear. I've
read on here it could be a stuck valve? should I
run something through the trans.? I saw something
about a plugged screen.....filter?
thanks!
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- 88 89 93 95 96 Aerostars
It could be a misadjusted or broken band, dried out servo, blown 3-4 shift solenoid, bad TPS or VSS.
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The TPS could have dead spots which cause an intermittent glitch.
KJMac
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I checked it and I will double check it, is it a common problem?
Will it show on a digital meter or do I need to throw another part at it?
thanks
kevin
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The dead spot or spots could be only a fraction of an inch, so it's pissible to miss it if you turn it too fast while the meter is connected.
KJMac
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I see, It is a very sensitive part! I may just put one in it, It has 180,000 on it!
I would imagine it is Due for a new one! do you know what is a good brand?
there is a lot of crap out there.
Thanks
I would imagine it is Due for a new one! do you know what is a good brand?
there is a lot of crap out there.
Thanks
- Joined
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- 88 89 93 95 96 Aerostars
I know that Wells, and Kem sell them. You could get a Motorcraft if you don't mind spending the extra money. Check WWW.RockAuto.Com.
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