Engine Light Turned On @ High RPMs

ozone · Sun, Oct-05-2008, 04:54:40 PM

It was a beautiful Sunday morning and I was chasing my dad's M5 uphill. I think I was in 4th gear and had my eye glued on the tach and at around 7500RPMs a yellow Service Engine Soon light turned on. It almost felt like I hit the rev limiter although I'm pretty sure I didn't as I was watching the RPMs closely.

I eased off the accelerator and the car lost alot of power and I heard a creaking noise. I slowed down to pull over and the car stalled. I restarted the engine and everything turned on fine. The SES light turned off. I drove slowly and had about 15 miles more before I got home. The car drove fine the rest of the way, with normal acceleration at all ranges. I did not push it hard of course and did not go into the high RPM range.

2-3 months ago I had Inspection II, fluids changed and topped off, replacement of oil pan, fuel tank sensors, and a couple of other items. I'm very finicky about keeping it in perfect maintenace. I don't beat on my car but I do like to drive it hard on occasion in the open road. Any idea what happened? It seems to be driving fine but should I be concerned?

My only peformance mods are SE Panel filter and DA Street software.

**PKumarM3** · Sun, Oct-05-2008, 04:57:43 PM

could be a faulty catalytic converter

you should get the car read at autozone and see if anything pops up.

also could be a busted MAF sensor.

SES lights could be....anything.

JerseyShoreM3 · Sun, Oct-05-2008, 05:18:13 PM

Quote:

Originally Posted by ozone

It was a beautiful Sunday morning and I was chasing my dad's M5 uphill. I think I was in 4th gear and had my eye glued on the tach and at around 7500RPMs a yellow Service Engine Soon light turned on. It almost felt like I hit the rev limiter although I'm pretty sure I didn't as I was watching the RPMs closely.

I eased off the accelerator and the car lost alot of power and I heard a creaking noise. I slowed down to pull over and the car stalled. I restarted the engine and everything turned on fine. The SES light turned off. I drove slowly and had about 15 miles more before I got home. The car drove fine the rest of the way, with normal acceleration at all ranges. I did not push it hard of course and did not go into the high RPM range.

2-3 months ago I had Inspection II, fluids changed and topped off, replacement of oil pan, fuel tank sensors, and a couple of other items. I'm very finicky about keeping it in perfect maintenace. I don't beat on my car but I do like to drive it hard on occasion in the open road. Any idea what happened? It seems to be driving fine but should I be concerned?

My only peformance mods are SE Panel filter and DA Street software.

SES light means something is wrong. Maybe not drastically, but something happened and the code would be stored. You'll never know what's up until you get the codes read, until then it's just speculation. I'd get it checked out just to be on the safe side.

babydevilj · Sun, Oct-05-2008, 05:49:53 PM

last time this happened to me i think it was my alternator that was going. very cheap to get that checked out. it was very wierd because i didnt get a battery light. 1 or 2 weeks later that light came on. for some reasons at high rpms it was drawing current from the battery and not the alternator.

ozone · Sun, Oct-05-2008, 06:45:12 PM

I've never taken my car to Autozone type place. Do I ask them to have error codes read? Is this OBDII? How much should that cost? Sorry for the ignorance, I am not very mechanically inclined.

**PKumarM3** · Sun, Oct-05-2008, 06:53:40 PM

not mechanically inclined but on top of all maintenance. lol

yeah its an OBD 2 port thats located under the steering column. def check it out there since its free and not like a $100 fee at the stealership. good luck and please do keep us posted

slyx620 · Mon, Oct-06-2008, 11:49:45 PM

I'm not sure about elsewhere in the country, but the Autozone's in California don't rent out OBDII scanners anymore.

ZeroG · Mon, Oct-06-2008, 11:56:53 PM

Considering that you have aftermarket software it's possible the MAF voltage limit may have been reached or the 1 of the O2 Sensors was fouled. Like everyone says get the code read, regardless the error will be logged and you'll know exactly what happened.

HartM3 · Mon, Oct-06-2008, 11:58:09 PM

sick looks good

lucky_doggg7 · Tue, Oct-07-2008, 06:13:50 AM

Find a Indy Shop with a GT1 (Group Test) diagnostic scanner, or an Autologic GT2 device. Using this scanner/diagnostic device is the only reliable way of reading the DTC (Diagnostic Trouble Code) stored in the ECU. Obviously the ECU detected **something** and shut down the fun to preserve the engine. Spend the $ and do this right, but then again, it is your car to gamble with any way you see fit...

Sun, Oct-05-2008, 04:54:40 PM	#1
ozone Unregistered User Join Date: Jan 2007 Posts: 597 Reputation: 0 Location: Conesus Lake NY	Engine Light Turned On @ High RPMs It was a beautiful Sunday morning and I was chasing my dad's M5 uphill. I think I was in 4th gear and had my eye glued on the tach and at around 7500RPMs a yellow Service Engine Soon light turned on. It almost felt like I hit the rev limiter although I'm pretty sure I didn't as I was watching the RPMs closely. I eased off the accelerator and the car lost alot of power and I heard a creaking noise. I slowed down to pull over and the car stalled. I restarted the engine and everything turned on fine. The SES light turned off. I drove slowly and had about 15 miles more before I got home. The car drove fine the rest of the way, with normal acceleration at all ranges. I did not push it hard of course and did not go into the high RPM range. 2-3 months ago I had Inspection II, fluids changed and topped off, replacement of oil pan, fuel tank sensors, and a couple of other items. I'm very finicky about keeping it in perfect maintenace. I don't beat on my car but I do like to drive it hard on occasion in the open road. Any idea what happened? It seems to be driving fine but should I be concerned? My only peformance mods are SE Panel filter and DA Street software. __________________ 2001 M3\|2004 NSX\|2005 RR HSE WM

Sun, Oct-05-2008, 05:49:53 PM	#4
babydevilj Sperm Dispenser Join Date: Jul 2006 Posts: 2,129 Reputation: 0	last time this happened to me i think it was my alternator that was going. very cheap to get that checked out. it was very wierd because i didnt get a battery light. 1 or 2 weeks later that light came on. for some reasons at high rpms it was drawing current from the battery and not the alternator. __________________

Sun, Oct-05-2008, 06:45:12 PM	#5
ozone Unregistered User Join Date: Jan 2007 Posts: 597 Reputation: 0 Location: Conesus Lake NY	I've never taken my car to Autozone type place. Do I ask them to have error codes read? Is this OBDII? How much should that cost? Sorry for the ignorance, I am not very mechanically inclined. __________________ 2001 M3\|2004 NSX\|2005 RR HSE WM

Mon, Oct-06-2008, 11:56:53 PM	#8
ZeroG Registered User Join Date: Jul 2005 Age: 32 Posts: 2,642 Reputation: 0 Location: Teh Valley, CA	Considering that you have aftermarket software it's possible the MAF voltage limit may have been reached or the 1 of the O2 Sensors was fouled. Like everyone says get the code read, regardless the error will be logged and you'll know exactly what happened. __________________ INDIVIDUAL BMW: '04 LEMANS BLUE VERT, LT ECRU INTERIOR, FULLY LOADED, EURO FOLDING MIRRORS, 6000K XENON FOGS, BBS CHs, RPI SCOOPS, and K&N PANEL. BMW Special Tools: RTAB, FCAB, Shim Kit & Tool, Cam Holder, and Flywheel Lock

Mon, Oct-06-2008, 11:58:09 PM	#9
HartM3 Registered User Join Date: Jul 2008 Posts: 22 In the garage: '07 JEEP GRAND CHEROKEE Reputation: 0	sick looks good __________________ 2004 M3/Silver/AP Exhaust

Sun, Oct-05-2008, 04:57:43 PM	#2
PKumarM3 Banned Join Date: Dec 2006 Posts: 7,508 Reputation: 0 Location: NJ	could be a faulty catalytic converter you should get the car read at autozone and see if anything pops up. also could be a busted MAF sensor. SES lights could be....anything.

Sun, Oct-05-2008, 06:53:40 PM	#6
PKumarM3 Banned Join Date: Dec 2006 Posts: 7,508 Reputation: 0 Location: NJ	not mechanically inclined but on top of all maintenance. lol yeah its an OBD 2 port thats located under the steering column. def check it out there since its free and not like a $100 fee at the stealership. good luck and please do keep us posted

Mon, Oct-06-2008, 11:49:45 PM	#7
slyx620 Registered User Join Date: Jul 2008 Posts: 4 Reputation: 0	I'm not sure about elsewhere in the country, but the Autozone's in California don't rent out OBDII scanners anymore.

Tue, Oct-07-2008, 06:13:50 AM	#10
lucky_doggg7 lucky_doggg7 Join Date: Apr 2008 Posts: 2,122 Reputation: 11 Location: Lake Forest	Find a Indy Shop with a GT1 (Group Test) diagnostic scanner, or an Autologic GT2 device. Using this scanner/diagnostic device is the only reliable way of reading the DTC (Diagnostic Trouble Code) stored in the ECU. Obviously the ECU detected something and shut down the fun to preserve the engine. Spend the $ and do this right, but then again, it is your car to gamble with any way you see fit...

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