mtneerfan
New member
My bronco does not seem to shift into drive. It will run up to 25mph and the tach reads 3000rpm. It will not run any higher than this. Any ideas what the problem may be?
25mph @ 3000rpm
- Thread starter mtneerfan
- Start date
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bigbluebronc
New member
Maybe shift outa four wheel drive , trnsfer case locked, what ya got in the bronco?
BBB
OP
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mtneerfan
New member
Torque converter....
Broncobill78
New member
Is it an automatic ? Last summer I had a very similar problem with my 88'. I was convinced the tranny was smoked but when I pulled it I found that the flywheel was broken. It had started with cracks between all of the flywheel bolts that eventually connected and sheared. This effectively turned my 1-piece flywheel into a 2-piece flywheel with the small inner part being bolted to the crank and the large outer part bolted to the torque converter. It would grab enough to spin the TC a little and I could get up to 10-15mph but I'd be taching out at 3K. It worked pretty well in reverse though. Don't know if that's what you're looking at but it might be worth considering. Unfortunately there's no way to visually inspect it without pulling the tranny. Here's my original post with photos:
http://broncozone.com/forums/index.php?sho...broken+flywheel
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Broncobill78
New member
Might be the vacuum line but typically a blown modulator will produce gray smoke from the tailpipe as the engine sucks up & burns the transmission fluid thru the torn diaphragm and back up the vacuum line to the intake. Also, with a bad/inoperative modulator valve the tranny won't shift out of first on it's own when the gear selector is placed in Drive, but if you manually shift it from Drive down to 2nd the tranny *will* shift up into 2nd but you won't be able to get into 3rd. Based on the brief description given I don't think vacuum or the modulator are issues here but perhaps the original poster will clarify or add more info.
If the modulator valve IS replaced be sure to note the color of the stripe around it and get a matching one from the parts guy.
If the modulator valve IS replaced be sure to note the color of the stripe around it and get a matching one from the parts guy.
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mtneerfan
New member
Thanks guys. I have spoken to numerous people and they also think it is the vacuum line or the modulator. I'll update you when I get it fixed. Thanks again
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mtneerfan
New member
I got the problem fixed. The transfer case was not disengaging. It would not shift all the way into 2H.
DOOOEH...!!!!
The second post had your answer all along..... BIGBLUEBRONCO
He said;
"Maybe shift outa four wheel drive, trnsfer case locked?, what ya got in the bronco?
BBB "
Glad your on the trail again.., thanks for the up-date, that's rare..!
The second post had your answer all along..... BIGBLUEBRONCO
He said;
"Maybe shift outa four wheel drive, trnsfer case locked?, what ya got in the bronco?
BBB "
Glad your on the trail again.., thanks for the up-date, that's rare..!
OP
OP
