Drivetrain Getting pinging with your pulley and ECU?
1st Gear
Joined: Nov 2002
Posts: 49
Likes: 0
From: west palm beach
Just got a little more information for you from Germany.
If you can hear audible knocking, your check engine light should also be on, this will also be on if your knock sensors are not working correctly.
If your check engine light is not on, you are probably hearing something else.
If you can hear audible knocking, your check engine light should also be on, this will also be on if your knock sensors are not working correctly.
If your check engine light is not on, you are probably hearing something else.
Thread Starter
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1st Gear
Joined: Dec 2002
Posts: 40
Likes: 0
From: Palo Alto, CA
>>Just got a little more information for you from Germany.
>>
>>If you can hear audible knocking, your check engine light should also be on, this will also be on if your knock sensors are not working correctly.
>>
>>If your check engine light is not on, you are probably hearing something else.
Thanks wrbrady for insight on this.
My check engine light does not come on, but the pinging goes away with 100 octane race gas. If it's anything besides pinging, why would it go away with 100 octane fuel? Randy, who's been in contact with EVOTech, has my ECU right now, and he is getting the timing retarded somewhat, since he's convinced that it's detonation.
I'll ask him about what you said.
Thanks again.
_________________
'03 MCS, EB/B, pkgs#1,2,3, Nav, H/K, PDC, Anthracite w/blk leather, Alta pulley, Evotech ECU, Anthracite SSR Comps
>>
>>If you can hear audible knocking, your check engine light should also be on, this will also be on if your knock sensors are not working correctly.
>>
>>If your check engine light is not on, you are probably hearing something else.
Thanks wrbrady for insight on this.
My check engine light does not come on, but the pinging goes away with 100 octane race gas. If it's anything besides pinging, why would it go away with 100 octane fuel? Randy, who's been in contact with EVOTech, has my ECU right now, and he is getting the timing retarded somewhat, since he's convinced that it's detonation.
I'll ask him about what you said.
Thanks again.
_________________
'03 MCS, EB/B, pkgs#1,2,3, Nav, H/K, PDC, Anthracite w/blk leather, Alta pulley, Evotech ECU, Anthracite SSR Comps
1st Gear
Joined: Nov 2002
Posts: 49
Likes: 0
From: west palm beach
What concerns me is that you did not have the problem for over a month with the new ECU program. It is very doubtful the program changed, so something is is happening here. THe fact that 100 fuel does not cause the ping is only treating the symtoms, and why is the check engine light not coming on?
6th Gear
Joined: Oct 2002
Posts: 3,652
Likes: 6
From: Lansdale, PA
Straight from the horse's mouth:
So, where exactly does it say anything about the MIL? 
Knock Sensors
Knock Sensors are required to prevent detonation (pinging) from damaging the engine.
The EMS2000 will retard the ignition timing (cylinder selective) based on the input of this
sensor. Detonation occurs due to:
• High Compression Ratio • Maximum Timing Advance Curve
• Poor Quality Fuel • High Intake and Engine Temperatures
• High Level of Cylinder Filling • Combustion Chamber Carbon Build-up
The knock sensor is a "Piezo-electric accelerometer" producing an output voltage proportional
to mechanical vibration (knock) produced by the engine. Knock is caused by highpressure
waves of uncontrolled spontaneous combustion of gasses in the cylinder.
The EMS2000 receives a signal from the knock sensor, filters out any noise and calculates
if the engine is knocking. During knock the crystal oscillation increases, the EMS2000 compares
the signal received to known signal profiles in the memory.
From the camshaft and crankshaft signals supplying information regarding the position of
the engine in it’s cycle, the EMS2000 is able to determine which cylinder is knocking and
will retard the ignition, on that particular cylinder until the knock is eliminated. It then gradually
advances the ignition again towards the original setting until knock occurs again.
Knock Sensor Fault Symptoms
• The EMS2000 will not be able to detect and correct for engine knock resulting in a
"pinging" sound within the engine.
• The engine will lack power and fuel consumption will be affected.
• The knock strategy ensures that the engine defaults to a safe ignition value.
Knock Sensors are required to prevent detonation (pinging) from damaging the engine.
The EMS2000 will retard the ignition timing (cylinder selective) based on the input of this
sensor. Detonation occurs due to:
• High Compression Ratio • Maximum Timing Advance Curve
• Poor Quality Fuel • High Intake and Engine Temperatures
• High Level of Cylinder Filling • Combustion Chamber Carbon Build-up
The knock sensor is a "Piezo-electric accelerometer" producing an output voltage proportional
to mechanical vibration (knock) produced by the engine. Knock is caused by highpressure
waves of uncontrolled spontaneous combustion of gasses in the cylinder.
The EMS2000 receives a signal from the knock sensor, filters out any noise and calculates
if the engine is knocking. During knock the crystal oscillation increases, the EMS2000 compares
the signal received to known signal profiles in the memory.
From the camshaft and crankshaft signals supplying information regarding the position of
the engine in it’s cycle, the EMS2000 is able to determine which cylinder is knocking and
will retard the ignition, on that particular cylinder until the knock is eliminated. It then gradually
advances the ignition again towards the original setting until knock occurs again.
Knock Sensor Fault Symptoms
• The EMS2000 will not be able to detect and correct for engine knock resulting in a
"pinging" sound within the engine.
• The engine will lack power and fuel consumption will be affected.
• The knock strategy ensures that the engine defaults to a safe ignition value.
1st Gear
Joined: Nov 2002
Posts: 49
Likes: 0
From: west palm beach
Hartmut, spoke to Evotech in Germany, they did tests and spoke to Mini over there, if the detonation is as severe as mentioned, it would be out of the range of the knock sensors. The fault should be stored and the CEL should come on. And if it is serious enough, a limp home mode could be activated. If you want to further discuss this, please feel free to call Hartmut Feyhl at 561-845-7888.
Thread Starter
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1st Gear
Joined: Dec 2002
Posts: 40
Likes: 0
From: Palo Alto, CA
>>What concerns me is that you did not have the problem for over a month with the new ECU program. It is very doubtful the program changed, so something is is happening here. THe fact that 100 fuel does not cause the ping is only treating the symtoms, and why is the check engine light not coming on?>>
(Sorry, I haven't responded for a while, but I've forgotten to check back onto this thread. Does anyone know if the "Subscribe" feature works yet? The one that sends you an e-mail if someone posts on the thread? I'm pretty sure I saw a "subscribe" option somewhere on MCO, but I can't find it now. If "Subscribe" is now working, I have AOL, so maybe their spam filters are kicking in, and I'm not getting notifications. Any suggestions?)
Anyway, many thanks for all the good info, guys.
The Check Engine Light does not come on; it doesn't even flicker, but the knock was not ever what I'd call "real severe". Randy can't figure out why it ran fine at the beginning as well. Since my last post, Randy contacted Evotech, and the ECU was remapped again, but with less advance. The pinging is very mild now, but is still there during wide open or near wide open throttle. We are going try the stock ECU file again, which never gave me pinging (with the stock pulley at least). I hope the Alta pulley plus the stock ECU file takes care of the pinging!
Do you guys think that the knock sensor is faulty? Incidentally, Randy told me to stick with the colder range plugs.
_________________
'03 MCS, EB/B, pkgs#1,2,3, Nav, H/K, PDC, Anthracite w/blk leather, Alta pulley, Evotech ECU, Anthracite SSR Comps w/Goodyear F1 GS-D3s
(Sorry, I haven't responded for a while, but I've forgotten to check back onto this thread. Does anyone know if the "Subscribe" feature works yet? The one that sends you an e-mail if someone posts on the thread? I'm pretty sure I saw a "subscribe" option somewhere on MCO, but I can't find it now. If "Subscribe" is now working, I have AOL, so maybe their spam filters are kicking in, and I'm not getting notifications. Any suggestions?)
Anyway, many thanks for all the good info, guys.
The Check Engine Light does not come on; it doesn't even flicker, but the knock was not ever what I'd call "real severe". Randy can't figure out why it ran fine at the beginning as well. Since my last post, Randy contacted Evotech, and the ECU was remapped again, but with less advance. The pinging is very mild now, but is still there during wide open or near wide open throttle. We are going try the stock ECU file again, which never gave me pinging (with the stock pulley at least). I hope the Alta pulley plus the stock ECU file takes care of the pinging!
Do you guys think that the knock sensor is faulty? Incidentally, Randy told me to stick with the colder range plugs.
_________________
'03 MCS, EB/B, pkgs#1,2,3, Nav, H/K, PDC, Anthracite w/blk leather, Alta pulley, Evotech ECU, Anthracite SSR Comps w/Goodyear F1 GS-D3s
1st Gear
Joined: Apr 2003
Posts: 19
Likes: 0
well, I believe i got the same problem with you. anyway, i did change my fuel from sHell to Mobil1, the pinging only came under full throttle. then I add 4 points octane booster around 5 dollar and can be used for 2/3 times usage and the pinging now is gone. and I did change my nOLOGY wires to stock wires. for now, I guess I have to stick with this thing for a while..
RANDYYYY please help me....,
have a good day
RANDYYYY please help me....,
have a good day
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