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Old 27th September 2016, 03:49 PM Thread Starter
Elie Malak
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Quote:
Originally Posted by jcolley View Post
What are you using to check error codes?
i usually go to my mechanic to check for codes but its a weird issue no errors on the idrive or dashboard...

it seems to happen infrequently

cold start normal nothing starts at first attempt

drive around for half and hour or so park , then go have lunch for example , come back half an hour later

turn it on cranks turns on rpm goes up to 800 then a second later, the two follwoing cases happen

1-it dies down and turns off and i turn it on second time, it turns on normally as if nothing is wrong

2-it dies down to 300 then pulls back up to 800 and stays on and everything is normal running

i dont knw why this is happening and it started about a month ago

car is driven twice a week since i have a daily toyota corolla :P

2008 Alpine White ///M6
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-FAMS Tune
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-RTD Short Shifter Kit


Previous Cars:
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Last edited by Elie Malak; 27th September 2016 at 03:51 PM.
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Old 27th September 2016, 04:14 PM
jcolley
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Quote:
Originally Posted by Elie Malak View Post
i usually go to my mechanic to check for codes but its a weird issue no errors on the idrive or dashboard...

it seems to happen infrequently

cold start normal nothing starts at first attempt

drive around for half and hour or so park , then go have lunch for example , come back half an hour later

turn it on cranks turns on rpm goes up to 800 then a second later, the two follwoing cases happen

1-it dies down and turns off and i turn it on second time, it turns on normally as if nothing is wrong

2-it dies down to 300 then pulls back up to 800 and stays on and everything is normal running

i dont knw why this is happening and it started about a month ago

car is driven twice a week since i have a daily toyota corolla :P
What software is your mechanic using?
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Old 27th September 2016, 05:02 PM Thread Starter
Elie Malak
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Quote:
Originally Posted by jcolley View Post
What software is your mechanic using?
Rheingold but i sitill didnt take it. To him for him to diagnose
Will go in these couple of days

2008 Alpine White ///M6
Driven Twice A Week
A Sheer Driving Pleasure
Instagram: @elie_malak
Facebook: Elie Malak

Mods: (List Will Grow with time)
-Matt Black Grills
-Matt Back Side Grills
-CF VRS Front Lip
-CF VRS Diffuser
-VF VRS Trunk Lip
-Eisenmann Race Exhaust
-Charcoal Filter Delete
-K&N Drop In Air Filters
-Agency Power Pulley
-Eibach Lowering Springs
-VRSF Spacers 10mm Front / 12mm Rear
-FAMS Tune
-Supersprint Primary Cat Delete Bypass
-RTD Short Shifter Kit


Previous Cars:
-E60 2006 530i :'( SOLD
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Old 27th September 2016, 06:00 PM
aljordan
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Sounds like "vapor lock".

Old Toyotas they will raise fuel pressure to atmospheric conditions in order to quickly purge the vaporized fuel out of the lines. The cars will stumble upon a warm start due to this condition if there is an issue with the system to combat this.
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Old 7th October 2016, 01:50 AM
gmak
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+1 on JColley. He's your go-to guy on this. I'm about 3 - 4 years behind him, and I doubt I'll ever be where he is in detailed knowledge.

If weird stuff is happening and there are no error codes, then that is very bizarre. This car hits you, but always gives a reason.

Generally,
1. The car is either shutting off in spite of itself, or shutting down deliberately.
2. If it's deliberately, then you need to understand the startup test routine and the order, and go through that bit by bit to logically isolate the problem.
3. If it's in spite of itself - air, fuel, spark. It becomes a mechanical exercise to determine which of the three is letting down the side.

If you can get a copy of ISTA/D it will hi-light the module that is getting hit and you can dive in and see the errors, and the be walked through a test procedure. Some of the error modules are secondary. Such as the DSC error when Throttle Actuators are failing.

If you're using ISTA/D or INPA (or any of the BMW-specific software) and not getting any codes then I would say that your DME is insane.
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Old 7th October 2016, 01:57 AM
gmak
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Quote:
Originally Posted by aljordan View Post
Sounds like "vapor lock".

Old Toyotas they will raise fuel pressure to atmospheric conditions in order to quickly purge the vaporized fuel out of the lines. The cars will stumble upon a warm start due to this condition if there is an issue with the system to combat this.
But OP says that he doesn't get the whoosh from the gas cap after the car has been running, which would indicate the vapour canister (? Am I getting the terminology right) and a form of vapour lock (no?) , according to RT7085.

Last edited by gmak; 7th October 2016 at 02:02 AM.
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Old 7th October 2016, 03:37 AM
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Your CAS Module is going out. It should sit just above your right knee and has a Simmons relay soldered to the circuit board a connection in the relay is going out or the circuit board is going out due to age. It will set a code, I forget the actual code but it will refer to CAS terminal 50 the ground side of your stater. this code can only be read with ISTA/D I have an Icarley and only ISTA/D works.

That relay completes the circuit to engage the starter between ground of starter and actual ground.

Maybe its this? bad news CAS modules are 1,600 UDA and you'll need a $1,000.00 laptop to program it

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Last edited by TJM5; 7th October 2016 at 03:37 AM.
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Old 7th October 2016, 03:39 AM
m5 deamon
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Sounds like an idle air actuator failing I had a customers car acting up start stall starts stall until you applied the gas pedal and kept her idleing then she would be fine, to eliminate the mafs unplug them and try see if she acts up

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Old 7th October 2016, 03:40 AM
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Quote:
Originally Posted by TJM5 View Post
Your CAS Module is going out. It should sit just above your right knee and has a Simmons relay soldered to the circuit board a connection in the relay is going out or the circuit board is going out due to age. It will set a code, I forget the actual code but it will refer to CAS terminal 50 the ground side of your stater. this code can only be read with ISTA/D I have an Icarley and only ISTA/D works.

That relay completes the circuit to engage the starter between ground of starter and actual ground.

Maybe its this? bad news CAS modules are 1,600 UDA and you'll need a $1,000.00 laptop to program it
I wish that were the case. I figured out how to clone a CAS into another CAS retaining all data. I have 25 of them I'd like to sell. Not a single one I've opened yet has had high resistance across the load side of the terminal 50 relay.

The codes A0C1 and A0C5 are usually relating to terminal 50 current though and not an indication of the relay itself.
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Old 7th October 2016, 06:20 AM Thread Starter
Elie Malak
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Quote:
Originally Posted by TJM5 View Post
Your CAS Module is going out. It should sit just above your right knee and has a Simmons relay soldered to the circuit board a connection in the relay is going out or the circuit board is going out due to age. It will set a code, I forget the actual code but it will refer to CAS terminal 50 the ground side of your stater. this code can only be read with ISTA/D I have an Icarley and only ISTA/D works.

That relay completes the circuit to engage the starter between ground of starter and actual ground.

Maybe its this? bad news CAS modules are 1,600 UDA and you'll need a $1,000.00 laptop to program it
i dont think its the cas since y does it only do it after 30min+ of being parked and not constantly after 4 min or 10min of being parked and y is the second attempt flawless... something mechanical looks like to be the culprit .. mafs or fuel pressure regulator or relay maybe gas canister... anyways saturday i will scan it with ista and find out i still didnt scan it since i drive it twice a week and only time i can do it is saturday so no worries

Quote:
Originally Posted by gmak View Post
But OP says that he doesn't get the whoosh from the gas cap after the car has been running, which would indicate the vapour canister (? Am I getting the terminology right) and a form of vapour lock (no?) , according to RT7085.
gmak saturday i will find out i still didnt scan and when i said no errors i meant no errors on the dash :P

Quote:
Originally Posted by m5 deamon View Post
Sounds like an idle air actuator failing I had a customers car acting up start stall starts stall until you applied the gas pedal and kept her idleing then she would be fine, to eliminate the mafs unplug them and try see if she acts up
i changed both with their hoses but i forgot to change the breather valve directly sitting above them thats MIGHT be causing the idle fluctuation even after changing both.. the idle still fluctuates for 1-2min after i start it up during warm start but its something ive learned to live with to be honest.. :P

Quote:
Originally Posted by jcolley View Post
I wish that were the case. I figured out how to clone a CAS into another CAS retaining all data. I have 25 of them I'd like to sell. Not a single one I've opened yet has had high resistance across the load side of the terminal 50 relay.

The codes A0C1 and A0C5 are usually relating to terminal 50 current though and not an indication of the relay itself.
i want to finish with these issues so i can get ur tune already and those headers (inifinty design) since i was waiting for ages for headers that DONT make it sound like a v8 at low rpm.. <3

2008 Alpine White ///M6
Driven Twice A Week
A Sheer Driving Pleasure
Instagram: @elie_malak
Facebook: Elie Malak

Mods: (List Will Grow with time)
-Matt Black Grills
-Matt Back Side Grills
-CF VRS Front Lip
-CF VRS Diffuser
-VF VRS Trunk Lip
-Eisenmann Race Exhaust
-Charcoal Filter Delete
-K&N Drop In Air Filters
-Agency Power Pulley
-Eibach Lowering Springs
-VRSF Spacers 10mm Front / 12mm Rear
-FAMS Tune
-Supersprint Primary Cat Delete Bypass
-RTD Short Shifter Kit


Previous Cars:
-E60 2006 530i :'( SOLD

Last edited by Elie Malak; 7th October 2016 at 06:21 AM.
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