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Car starts then dies, then won't start.


dougmacho
Junior Member


Galant VR-4 org Post #: 1234811 posted 01/13/17 08:11 PM     Remind Me!  Send Private Message   Edit Post      
Have some issues, hoping I can pick your brains a bit.

Has a new coolant temp sensor also rewired it because it was brittle. Car starts fine when cold, then dies when I put it into gear. Revs start to die when shifter is in gear, does not dies when clutch is depressed. Doesn't startup after that. Checked out ECU, doesn't seem to be leaking. Spark plugs are black but not doused with fuel, as in failed CTS conditions. I have a walboro in a jhm fuel cell, should I be able to hear the pump when key is in "on" position? Have a few pressure guage that reads right. I have DSM link with full bolt ones, wideband and speed density.Please help with any suggestions! Thanks.

How do I rule out the CAS, ISC and MPI relay?


Edited by dougmacho (01/13/17 08:40 PM)

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iceman69510
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Galant VR-4 org Post #: 1234812 posted 01/13/17 09:01 PM     Remind Me!  Send Private Message   Edit Post      
First off, fuel pump does not run until cranking.

Next I would check all your electrical connections.

Others will need to chime in further.



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MoeJz
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Galant VR-4 org Post #: 1234873 posted 01/24/17 01:58 AM     Remind Me!  Send Private Message   Edit Post      
I have a same issue or maybe similar.
- I start the car and let it idle for 15 minutes or so, then car starts to slowly die and shuts off.
Then the start up is hard and revving it doesn't do anything.
After reading through multiple threads and diagnostics it appears to be the CAS is done on mine.
CAS is also refereed to synchronizer from what i found. I have yet to order one and replace.

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mitsuturbo
Banthony
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Galant VR-4 org Post #: 1235018 posted 01/31/17 09:18 AM     Remind Me!  Send Private Message   Edit Post      
Quoting dougmacho:



How do I rule out the CAS, ISC and MPI relay?




CAS is almost always Go/No-go. ISC shouldn't cause the car to not start. MPI relay could be flaky, but you'd hear it click, most likely. Do your TPS values range from .6ish to 5v? What MAF are you running?



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Nabeel
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Galant VR-4 org Post #: 1236654 posted 04/18/17 03:19 AM     Remind Me!  Send Private Message   Edit Post      
It seems SD setup not correct. You might recheck the assigned pin and captured values.



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transparentdsm
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Galant VR-4 org Post #: 1236657 posted 04/18/17 09:00 AM     Remind Me!  Send Private Message   Edit Post   
Quoting mitsuturbo:

Quoting dougmacho:



How do I rule out the CAS, ISC and MPI relay?




CAS is almost always Go/No-go. ISC shouldn't cause the car to not start. MPI relay could be flaky, but you'd hear it click, most likely. Do your TPS values range from .6ish to 5v? What MAF are you running?





could a burnt ISC driver in the ECU cause this?



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