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  #1  
Old 09-18-2012, 12:14 AM
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Question to manual tranny owners

Friend of mine owns `92 USDM SVX swapped 6MT with DCCD and he`s got few problems after swap, he`s asking for an advices:

1. When warming up, idle rpm shakes from 1000rpm till dead (400-500rpm). If he dont meddle in idle regulation, the idle rpm too high in comparison with normal conditions

2. Before 1500-1700rpm engine loses traction, but after it kicks and then runs good

MAF is ok, fuel pump is ok, the problem still exists after engine replacement, so all sensors and engine electrical is ok.

3. What exactly to do with electrical after swap? He did a lock on neutral position as i know. But maybe he lost something. Could anyone tell please what to do with electrical exactly?

Thanks!
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Old 09-18-2012, 06:29 AM
dragoontwo dragoontwo is offline
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Re: Question to manual tranny owners

Is he using the stock ECU? Did he remove the TCU? What do you mean by the engine looses traction?
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Old 09-18-2012, 06:38 AM
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Re: Question to manual tranny owners

Quote:
Originally Posted by dragoontwo View Post
Is he using the stock ECU? Did he remove the TCU? What do you mean by the engine looses traction?
He is using stock ECU, about TCU i`ll write later as soon as i get him on phone
I mean it feels like something hold the car on the tail, like engine works only for 50%
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Old 09-18-2012, 06:56 AM
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Re: Question to manual tranny owners

Clutch slipping? Is that what you are saying?

Last edited by Conn SVX; 09-18-2012 at 06:59 AM.
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Old 09-18-2012, 07:29 AM
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Re: Question to manual tranny owners

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Originally Posted by Conn SVX View Post
Clutch slipping? Is that what you are saying?
He said "There is no engine traction before 1500-1700rpm". He means the engine cant deliver 100% of its power

something like that..
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Old 09-18-2012, 12:13 PM
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Re: Question to manual tranny owners

So the motor is breaking down. Once over a certain RPM a motor running on 3 cylinders will smooth out.
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Old 09-18-2012, 02:04 PM
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Re: Question to manual tranny owners

Quote:
Originally Posted by Conn SVX View Post
So the motor is breaking down. Once over a certain RPM a motor running on 3 cylinders will smooth out.
This engine from donor with 56K miles so its unlikely bad engine
I think before 1500-1700rpm happens something like when stock tranny did a shift - it eliminates every second injection, so maybe ECU reads "shift" before these rpm. Is it possible?

I called him, he said he has stock ECU and connected stock TCU
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Old 09-18-2012, 02:12 PM
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Re: Question to manual tranny owners

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Originally Posted by Kiss Me Deadly View Post
This engine from donor with 56K miles so its unlikely bad engine
I think before 1500-1700rpm happens something like when stock tranny did a shift - it eliminates every second injection, so maybe ECU reads "shift" before these rpm. Is it possible?

I called him, he said he has stock ECU and connected stock TCU
He needs to pull the TCU out. There is no reason for it to be in place. It sounds like there is possibly a torque control signal going on.
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Old 09-18-2012, 03:23 PM
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Re: Question to manual tranny owners

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Originally Posted by 1986nate View Post
He needs to pull the TCU out. There is no reason for it to be in place. It sounds like there is possibly a torque control signal going on.
Agreed. Yank the TCU.
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Old 09-18-2012, 05:05 PM
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Re: Question to manual tranny owners

Quote:
Originally Posted by 1986nate View Post
He needs to pull the TCU out. There is no reason for it to be in place. It sounds like there is possibly a torque control signal going on.
Exactly what I was thinking. That's why I asked.
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Old 09-24-2012, 07:53 AM
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Re: Question to manual tranny owners

How did this turn out?
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Old 09-24-2012, 01:37 PM
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Re: Question to manual tranny owners

I`ll let know as soon as i get news
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Old 09-25-2012, 08:29 AM
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Re: Question to manual tranny owners

and why isn't your buddy on this forum
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Old 10-16-2012, 03:51 AM
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Re: Question to manual tranny owners

He has an account here, but its difficult for him to read technical english, and also english)

Latest news:
After disconnecting TCU warming up rpm hesitation is gone and engine runs much better before 1500-1700rpm, the problem solved
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