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Jerks in low gear, won't stay in gear.
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maciag
Novice
Jan 28, 2014, 4:53 PM
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Jerks in low gear, won't stay in gear.
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1997 licoln continental, automatic
Around first and second gear, the car hesitates to pull and will 'jerk'. While it's doing this the car can be revved unsynchronized as it will try to 'jerk' it's way past around 1st and 2nd gear. Eventually, it smooths out after it's into 3rd gear and drives normally though after roughly getting through 1st and 2nd. In 1st and 2nd gear, if the gas is let off for a bit before smoothing out.. it will often sometimes completely come out of gear, not pulling from any power given. If it does, after popping out of gear the car will not go back into gear, even from a complete stop from 'park' then trying to put it back into 'drive'..no response to power given. However, it goes back into gear just fine, roughly again, if you turn the car completely off and put it back into 'drive'. Obviously, the car also will hesitate even worse on an incline from a dead stop.
Another note, there is a slight wobble to the crankshaft pulley.. though, i feel this issue is completely unrelated to a harmonic balancer noting that the car just pops out of gear and goes back in gear just fine when it is turned back off then back on.....but, not unless the car is completely turned off?
What would the obvious culprit be...? Torque converter? Please help me get a DD back on the road. Thanks guys!
(This post was edited by maciag on Jan 28, 2014, 5:04 PM)
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Discretesignals
Ultimate Carjunky
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Jan 28, 2014, 7:17 PM
Post #2 of 8
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Re: Jerks in low gear, won't stay in gear.
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That doesn't sound like the symptoms of a failing torque converter. It does sound like you have slippage going on in the transmission. You'll need to take it to a transmission shop for evaluation. They may do some pressure testing and electrical check outs before diving into the transmission.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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maciag
Novice
Jan 28, 2014, 7:42 PM
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Re: Jerks in low gear, won't stay in gear.
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so, i was taking a closer look tonight in the garage and it seems that
the crankshaft pulley isn't wobbling, but the serpentine belt tensioner
may be shot. it is definitely wiggling back and fourth at idle. thinking
about it, i have a feeling when putting this shot tensioner under heavy
load under first and second, it may no longer sometimes be holding the
serpentine belt tensioned down, staying stuck out of position explaining
the sudden failure of power being delivered. leaving the car
unresponsive at sometimes. i think this might explain the jerking, and
complete loss of power under heavy load under first and second until
it's at a higher gear forcing the piece to put more tension onto the
belt. Will give it a try and update.
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Discretesignals
Ultimate Carjunky
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Jan 28, 2014, 8:47 PM
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Re: Jerks in low gear, won't stay in gear.
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Don't really think an accessory belt issue is going to cause the symptoms your describing. It is more than likely a problem that should be addressed, but shouldn't cause the transmission to not engage or the vehicle to stop accelerating.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jan 28, 2014, 8:48 PM)
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maciag
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Jan 28, 2014, 9:26 PM
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Re: Jerks in low gear, won't stay in gear.
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even if the belt isn't making full contact at times to the crank pulley from being so loose because of the shot tensioner? i have my hopes up, i'll be sure to update
i was thinking, in theory..this would also explain why it smoothes out at a higher gear, forcing a lot more tension to the belt
(This post was edited by maciag on Jan 28, 2014, 9:34 PM)
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maciag
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Jan 28, 2014, 11:38 PM
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Re: Jerks in low gear, won't stay in gear.
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so as you said, my bright idea was definitely just ruled out. lol. i had a friend drive my car as i rode in the passenger side until it got to the point that sometimes happens as i explained, where the car acts as if it's neutral while in drive(no response to the wheels at all from any power given). i cautiously looked under the hood while he left it in drive as it acted like that, and there was no visual difference with anything more than usual compared to when it's running in drive properly. im going to try to do some research in attempt to trouble shoot more and try to narrow the actual possible cause down..im really stingy about having someone else fix my car for anything. i'd really like the knowledge for myself.
ill keep this updated for future reference whenever i figure it out.
(This post was edited by maciag on Jan 28, 2014, 11:42 PM)
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maciag
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Jan 29, 2014, 12:17 AM
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Re: Jerks in low gear, won't stay in gear.
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link deleted ............... not allowed
what do you guys think about this? seems likely?
(This post was edited by Hammer Time on Jan 29, 2014, 3:46 AM)
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Discretesignals
Ultimate Carjunky
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Jan 29, 2014, 5:48 AM
Post #8 of 8
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Re: Jerks in low gear, won't stay in gear.
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im really stingy about having someone else fix my car for anything
Why? Do you have the tools, experience, knowledge, and equipment to diagnose and repair transmission problems. You could spend a lot of time and money trying to do that yourself and trying learn as you go. If you take it to a transmission specialist, they can diagnose it for you, give you a repair quote, and then you can decide if you want to perform the repair yourself. That would be the cheapest route, but if you want to do it yourself, more power to you.
You could go all day long searching on the internet about your problem while looking for solutions, but until you do some testing or possibly tear down and inspection you won't know what the actual problem really is.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jan 29, 2014, 5:52 AM)
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