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Old 04-20-2018, 11:40 AM   #1 (permalink)
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Default Signs of a shift solenoid problem

My 2008 SX4 has 140k miles on it and about two ago I had the TCM updated and the transmission changed at Suzuki. The reason I had the TCM updated was when I drive 20 minutes in town (stop and go) and the engine has warmed up the engine will hesitate when I slow down to a stop and then when I go from a stop the engine again will hesitate (maybe hesitate is the wrong term but that is the only way I can describe it). This problem haves at coming to a stop and moving from a stop. It wont do it at a stop only when the car is moving. Does this have anything to do with the shift solenoid?
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Old 04-21-2018, 11:56 AM   #2 (permalink)
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ENgine hesitates and they update the Transmission COntrol MOdule.....?....and a transmission change ? OK, TCM may have some relation with engine as it releases electronic throttle a little during acceleration while shifting to save transmission clutches and disks...but other than that....I have problem seeing a connection. ANd no more about a shift solenoid....
Maybe you could make a video of that phenomena to make sure we make a correct interpretation.
Many have complained about throttle lag, but that does not seem to correspond to what you describe...
DId the phenomena exist before the transmission was changed ?
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Old 04-23-2018, 11:16 AM   #3 (permalink)
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Thanks....I will film and upload some video in a few days!
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Old 04-23-2018, 09:38 PM   #4 (permalink)
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Quote:
Originally Posted by lordmonty View Post
My 2008 SX4 has 140k miles on it and about two ago I had the TCM updated and the transmission changed at Suzuki. The reason I had the TCM updated was when I drive 20 minutes in town (stop and go) and the engine has warmed up the engine will hesitate when I slow down to a stop and then when I go from a stop the engine again will hesitate (maybe hesitate is the wrong term but that is the only way I can describe it). This problem haves at coming to a stop and moving from a stop. It wont do it at a stop only when the car is moving. Does this have anything to do with the shift solenoid?
Had a Pontiac that did something like that, turned out the trans was not unlocking the torque converter. Also may be the throttle position sensor, was dropping timing coming off idle and off throttle.
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Old 04-24-2018, 06:28 AM   #5 (permalink)
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Quote:
Originally Posted by USMC5811 View Post
Had a Pontiac that did something like that, turned out the trans was not unlocking the torque converter...
Hey I remember that from the Transport forum....
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Old 04-24-2018, 08:14 AM   #6 (permalink)
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"Hesitates" is probably not the correct term, but it is the only word that comes to mind. Once I film the issue it might better explain what is happening. I hope to film sometime this week and upload an example.
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Old 04-26-2018, 10:01 AM   #7 (permalink)
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I was able to capture video and audio of the sound coming from the engine. This is after 20 to 25 minutes of the engine running. At first start all is good, but as the time goes on the problem shows up when moving from a compete stop. And when coming to a stop the engine makes that same sound so most of the time I pump the gas peddle and it makes the problem stop until I once again move from a stop to go. I hope this video helps me with diagnosing the problem.

https://youtu.be/U1Vu7OfgKD4

Last edited by lordmonty; 04-26-2018 at 10:02 AM. Reason: Wanted to embed the video too
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Old 05-04-2018, 12:28 PM   #8 (permalink)
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That, I believe is the sound that says stop driving me untill you have me diagnosed and repaired.

Is this on your SX4? More information on your ride is needed.
It sounds as if a component in a rotational system is fractured and will be coming apart.
You DO NOT want to be traveling at speed when that happens.
If automatic trans, it could be the flex plate.
If a manual trans, it could be a clutch or pressure plate issue.
All of which could have catastrophic consequences.

Or. it could simply be a loose piece of sheet metal rubbing on a rotational device.
Is anything loose and rattling under the hood when just idling?

Have it checked before someone gets hurt!

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Old 05-04-2018, 01:49 PM   #9 (permalink)
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I will tell my regular mechanic about the rotational system fractured, flex plate, clutch or the pressure plate issue. It is my 2008 SX4 and it has 140k miles on it and about two months ago I took it to my regular mechanic and he sent me to his a transmission (who turns out to be my daughter's Sunday School teacher) and he suggested that I have the TCM updated. After taking it to get updated I returned to the place that did the update right after I drove for 30 minutes because the update didn't fix the problem. While there I demonstrated the issue to the mechanic that works on the Suzuki's and he thought it could be a shift solenoid. So I was wondering if this could be related to the shift solenoid... Also the check engine light is not on.
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Old 05-04-2018, 04:15 PM   #10 (permalink)
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OK, so an automatic transmission.
That rules out the clutch/pressure plate and leaves the flexplate as a possible cause.

Your regular mechanic sending you to see the transmission specialist seems to exclude anything being
loose in the engine compartment and points it to being non-engine related.

If a shift solenoid was going out, it most likely would not bring a light, nor would a
cracked flexplate or loose torque converter.
It seems as if when you are giving it gas and the noise goes away, it is the
centripetal force acting to straighten the plate, which quiets the sound.

I do not perceive it to be related to the shifting or nonshifting between the gears, but this is only my opinion.

Your mechanic could possibly remove an inspection plate and look inside to check whether or not that is your problem.

Don
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1994 Geo Tracker 1.6L 8V TBI, 3-spd auto 4WD 152K timing belt/wp power windows Camo seat covers carpet Dashcam & backup cam
1999 Chevy Tracker removable hardtop 1.6L 16 valve 5-speed 4WD 104K timing belt/wp aluminum radiator electric fan Bartact seat covers Vixen airhorn onboard compressor Dashcam rear locker winch
2002 Grand Vitara 2.5L 4WD 123K Valves lifters rings/bearings timing chain gears tensioners WP coils ECU
1991 GMC K2500 4WD 454 Xcab
1997 Trans Am LT1 auto
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