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Swapped to T5, engine wants to stall when I push the clutch in.

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Old Aug 19, 2009 | 05:15 PM
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From: Sacramento
Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Swapped to T5, engine wants to stall when I push the clutch in.

I just swapped to a T5 and have been learning how to drive it on the fly. Once thing I notice is when I push in the clutch the RPMS drop so quickly that the needle dips well below idle and sometimes even stalls. I'm thinking throttle follower?

Also, what else, if anything, do I need to futz around with in the PROM when swapping to manual?
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Old Aug 19, 2009 | 07:32 PM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Swapped to T5, engine wants to stall when I push the clutch in.

First make sure that the ECM isn't going into DFCO. If so then raise the RPM and/or MPH limits.

Other then that the throttle follower would need to be changed. Slow down the rate that the IAC closes down on a throttle lift. And add some TF minimum steps.

Be sure there is enough maximum TF steps to be effective.

RBob.
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Old Aug 19, 2009 | 08:20 PM
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: Swapped to T5, engine wants to stall when I push the clutch in.

There may be an "automatic/manual" flag to set, depending on the mask you are using.
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Old Aug 22, 2009 | 01:10 AM
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: Swapped to T5, engine wants to stall when I push the clutch in.

From what I've seen, there are more things in the chip between a stick and automatic chip than what we can change. The stalling when you push in the clutch is one of them.

Ideally you'll want to start with a 305 5-speed chip and modify it from there. The AXXD is the 90-92 305 TPI 5-speed chip I started with.
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Old Aug 22, 2009 | 01:13 AM
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From: Sacramento
Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Re: Swapped to T5, engine wants to stall when I push the clutch in.

I forgot to mention i'm running the EBL.
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