Shift Problem

  • Thread starter Thread starter McLaren
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CAMAROBOY69
Keep us updated on your decision. Also make sure to get a better clutch like I mentioned in post #24.
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I will. I'm getting a new clutch and lightweight flywheel from 3sxperformance.
 
I've read every post in the thread twice now and I'm not getting a handle on what's happening. Let me make sure I understand the sequence of events.

Car state: Car is moving in 1st gear.

Driver action: You depress the clutch.

Car state: Tach needle falls to idle? (please confirm)

Driver action: You select 2nd gear.

Car state: Tach needle stays at or near idle? (please confirm)

Driver action: You release the clutch while adding some amount of throttle.

Car state: Tach needle stays at or near idle; engine does NOT repond to throttle inputs at all? (please confirm)

Driver action: Have already released clutch, so you continue to work the throttle until the car responds.

Car state: Engine finally responds to throttle input after 3-4 seconds. (please confirm)

I have to agree, it's very odd behavior. If the engine was still reponding to throttle inputs throughout the entire process, then it sounds like the clutch is not engaging at all... which may be any number or parts like release bearing or diaphram spring or even a leaky cylinder. Or it could also be a more serious internal tranny problem like a stripped gear, which would require a complete overhaul or replacement ($$$). Honestly, I'm no transmission guru, so I couldn't say what is wrong for sure.

But it is important to know if the engine is reponding to throttle inputs while the clutch is disengaged (pedal depressed)

If the engine is not responding to the throttle while the clutch is depressed, then that sounds like something weird and completely different. Perhaps a bad sensor on the intake side or maybe a traction control computer glitch --if you car has TCS.

Either way, it sounds like a good excuse to drive the M3 for a while.

(As if you need one. Sheesh.)

Good luck.

BTW... I didn't realise till now you got one. Pics?


M
 
CAMAROBOY69
///M-Spec ,
The problem was answered in post 23 by a mechanic. ;)
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Yeah, I saw that post, but the symptoms McLaren is describing doesn't sound like a typical fried clutch.

Usually, when the clutch disc needs to be replaced, the engine will rev freely in gear, but the car will not accelerate. He's saying the tach drops to idle?

Unless that is, in fact, what he's been trying to describe all along ....

Anyway... it's pretty confusing.

BTW.. I just realised the car is a VR-4. Which complicates things, since there is all this AWD stuff to consider.


M
 
I should have pics up by next month. I want to take 'em to the Speedway and get a little "photo shoot" going with them. :sly: (Even though I'm not the best at photography. :guilty: )

I went to another mechanic today in Fort Worth. Unfornately, he thinks the Mitsubishi dealer isn't telling me everything. After a while of "bad mouthing" the other mechanic, he thinks the car's tranny might need a good look at. He told me nothing appears to be extremely serious, but the clutch will need replacing.

And on the rev needle, he thinks he can solve the problem pretty easily. He thinks some sort of wire is coming "loose" during shifts and then connecting again.

He guarantees he can fix the rev needle problem for about $600. :dunce:
I told him about the parts I ordered from SX3Performance, and his 1st reply was to bring them to him when I got 'em.

He's offered about $1,600 for a whole deal of replacing the clutch and rev needle, so I'll probably go with him.

BTW, ///M, the M3 was never originally mine, I only drive it now due the stupidity of my sister. But I think it'll be good to get its legs stretch for a few days.
 
I'm still very unclear as to what is going on.

It isn't a slipping clutch, because if it was, pressing the accelerator in gear would begin to move the car, for just a moment, before the engine would "let go" of the clutch and start revving like crazy. At that point, the car would stop accelerating/moving forward, and begin to coast.

There might be something wrong with the transmission, but if so, engaging gears with the shifter would likely feel wrong, and/or it would be making noises. Also, it still would not explain the reportedly odd behavior of the engine.

One thing's for certain -- from what I can tell, the only way this situation would make sense is if he had an automatic transmission. Then, it would be simply hesitant to shift and shifting roughly, two problems not uncommon to automatic transmissions, especially those in heavy AWD sporty cars.
 
Yeah it is still confusing, hard to figure out whats really going on unless we were to check it out personally, otherwise not much we can do over the internet.



Wolfe2x7
One thing's for certain -- from what I can tell, the only way this situation would make sense is if he had an automatic transmission. Then, it would be simply hesitant to shift and shifting roughly, two problems not uncommon to automatic transmissions, especially those in heavy AWD sporty cars.
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Yeah thats why I asked what trans it is because it sounded like an automatic trans problem.
 

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