Tranny or Torque converter?
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Senior User
Joined: Aug 2003
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From: Webster, TX
Tranny or Torque converter?
First of all I have a 1988 Econoline Clubwagon with a 5.8L 351W and auto. trans. I'm not sure what tranny I have, but if anybody knows that would help alot. The problem is: It seems like the engine is revved up to high when driving around 45mph, it also seems to be shifting hard through all of the gears. Does this sound like the torque converter or a problem with the tranny? Is there a way to definitely tell if the converter is bad before replacing it? How difficult is it to replace? Do I have to remove the tranny? How long does it take? Do I need any special equipment?
THANKS
THANKS
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Joined: Nov 2004
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the od kicks in at 45. you should feel it. what does your gear shift read?. if its
p r n D d 1 it has to be in the first D for the overdrive to kick in.
lets us know your shift markings on the colum and we can answer more of your questions
good luck
rob
p r n D d 1 it has to be in the first D for the overdrive to kick in.
lets us know your shift markings on the colum and we can answer more of your questions
good luck
rob
Cargo Master
Joined: Dec 2003
Posts: 2,182
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From: Saint Augustine, FL
If its shifting hard and turning too much rpm at 45 mph its most likely not shifting to 3rd gear. Did you try shifting it manually to see if it has all 3 gears?
The C6 uses a vacuum modulator. If it looses vacuum then it will do exactly as you describe.
Steve
'95 Clubwagon XLT
The C6 uses a vacuum modulator. If it looses vacuum then it will do exactly as you describe.
Steve
'95 Clubwagon XLT
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Senior User
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From: Webster, TX
No, I have not tried shifting it manually, but I will and report back. It feels like it shifts throught the gears though. How do I test the vaccum modulator? Well it does seem to be running at a higher RPM when driving at all speeds, but it seems worse around 45 mph.
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Senior User
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From: Webster, TX
Well, I have found the procedure for checking a modulator in my repair manual and plan to check it this weekend. I also checked the price and it is only $10.99.
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Cargo Master
Joined: Dec 2003
Posts: 2,182
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From: Saint Augustine, FL
To test the modulator you first need to know if you have vacuum at the modulator. To test that you need to check for vacuum at the modulator. Pull the vacuum line off the modulator at the rear of the transmission and test for vacuum. If you don't have vacuum there that's your problem and you have a leak in the line somewhere. If you have vacuum, then replace the modulator and try driving it again.
If the modulator has failed or there is no vacuum, then it will only shift at very high rpm and that will make it seem like you have too much rpm all the time. Of course it could be slipping all the time. That's a completely different problem.
Steve
'95 Clubwagon XLT
If the modulator has failed or there is no vacuum, then it will only shift at very high rpm and that will make it seem like you have too much rpm all the time. Of course it could be slipping all the time. That's a completely different problem.
Steve
'95 Clubwagon XLT
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