Rough idle, power surge, stall solutions?

3Thirty5i · 07-23-2008, 10:05 AM

Ok, I've read all kinds of threads on rough idling, power surges, and stalling engines, but there doesn't seem to be any solutions mentioned. I've had all these problems since my last service which included a new fuel pump and new progman which was done probably about 4 months ago. The rough idle usually happens when the engine is cold. The stalling has happened when the engine is warm and usually with the AC on in warm weather. The power surges are mostly when I am sitting at a stop or in park and the engine is warm. Although I've felt my car surging on acceleration and cruising as well. The only reason I'm posting this is cause I'm due for another service soon and I want to be able to discuss possible solutions with my SA. Thanks in advance for your reply.

3Thirty5i · 07-23-2008, 09:08 PM

Anyone?

LambOfGod · 07-24-2008, 09:41 PM

I've had this happen twice. Weird Problem. Happened to the wifey today. Car starts back up fine. I had new pump put in a few months ago.

darkphantom · 07-24-2008, 10:21 PM

OP - what MY is your car? also how many miles.

f30er · 07-24-2008, 10:25 PM

I had the same problem, problem was fixed today....it was a bad O2 sensor......I also had a "Service Engine Soon" light on and would on occasion get a 1/2 engine limp code if I was on a really bumpy road.....

new O2 sensor installed today and the car feels great!!

Year's_End · 07-24-2008, 11:23 PM

Damn, that's what I think the problem is with my car.^

I just installed a JB1 piggyback and my car has rough idles (drops to 500rpm at times), limp mode issues (solved easily by restarting the car, and doesn't occur too often), and unusual power deliveries when accelerating right after slowing down (not too frequent).

f30er · 07-25-2008, 06:37 AM

Quote:

Originally Posted by Bimmer Loyalist

Damn, that's what I think the problem is with my car.^

I just installed a JB1 piggyback and my car has rough idles (drops to 500rpm at times), limp mode issues (solved easily by restarting the car, and doesn't occur too often), and unusual power deliveries when accelerating right after slowing down (not too frequent).

O2 sensor! Take out the JB1 and take it in to the dealer! Have you noticed your mileage also drop recently?

E92ML · 07-26-2012, 01:15 AM

Quote:

Originally Posted by e92er

I had the same problem, problem was fixed today....it was a bad O2 sensor......I also had a "Service Engine Soon" light on and would on occasion get a 1/2 engine limp code if I was on a really bumpy road.....

new O2 sensor installed today and the car feels great!!

I have the exact same symptoms! I'll be taking it in car in this weekend to check my O2 sensor, I hope this fixes the problems. Thanks for the help.

f30er · 07-26-2012, 05:20 AM

Quote:

Originally Posted by E92ML

I have the exact same symptoms! I'll be taking it in car in this weekend to check my O2 sensor, I hope this fixes the problems. Thanks for the help.

Lol, 4 years....still remember like it was just yesterday....

Billy335 · 07-26-2012, 11:04 AM

Quote:

Originally Posted by 3Thirty5i

Ok, I've read all kinds of threads on rough idling, power surges, and stalling engines, but there doesn't seem to be any solutions mentioned. I've had all these problems since my last service which included a new fuel pump and new progman which was done probably about 4 months ago. The rough idle usually happens when the engine is cold. The stalling has happened when the engine is warm and usually with the AC on in warm weather. The power surges are mostly when I am sitting at a stop or in park and the engine is warm. Although I've felt my car surging on acceleration and cruising as well. The only reason I'm posting this is cause I'm due for another service soon and I want to be able to discuss possible solutions with my SA. Thanks in advance for your reply.

Same problem just got mine 2 weeks ago. It's bone stock and cpo with 55000 miles on it going to the dealer today to get it resolved they don't wanna clean the intake manifold that's for sure.

Billy335 · 07-28-2012, 06:49 AM

So it's been a few day since I have been to the dealer they checked over the computer and they came up with this solution. Go buy two bottles of chevron techron. Put one in at a half tank and run it low. Then fill up and put in the other. Believe it or not it has helped still a little rough when cold but other than that it's not bad. My car is also bone stock at the moment.

07-23-2008, 10:05 AM	#1
3Thirty5i Private 7 Rep 50 Posts Drives: E90 Black Sapphire Join Date: Nov 2006 Location: East Bay, NorCAL iTrader: (0)	Rough idle, power surge, stall solutions? Ok, I've read all kinds of threads on rough idling, power surges, and stalling engines, but there doesn't seem to be any solutions mentioned. I've had all these problems since my last service which included a new fuel pump and new progman which was done probably about 4 months ago. The rough idle usually happens when the engine is cold. The stalling has happened when the engine is warm and usually with the AC on in warm weather. The power surges are mostly when I am sitting at a stop or in park and the engine is warm. Although I've felt my car surging on acceleration and cruising as well. The only reason I'm posting this is cause I'm due for another service soon and I want to be able to discuss possible solutions with my SA. Thanks in advance for your reply.
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07-23-2008, 09:08 PM	#2
3Thirty5i Private 7 Rep 50 Posts Drives: E90 Black Sapphire Join Date: Nov 2006 Location: East Bay, NorCAL iTrader: (0)	Anyone?
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07-24-2008, 09:41 PM	#3
LambOfGod Lieutenant 14 Rep 571 Posts Drives: 335 Red Sedan Join Date: May 2007 Location: Michigan iTrader: (0)	I've had this happen twice. Weird Problem. Happened to the wifey today. Car starts back up fine. I had new pump put in a few months ago.
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07-24-2008, 10:21 PM	#4
darkphantom Banned 595 Rep 5,946 Posts Drives: E93 335i Join Date: Aug 2007 Location: The place for Bimmers iTrader: (4)	OP - what MY is your car? also how many miles.
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07-24-2008, 10:25 PM	#5
f30er Captain 126 Rep 993 Posts Drives: F85 Join Date: Jan 2007 Location: OTP iTrader: (6) Garage List 2014 Jaguar F-Type R [0.00] 2016 GMC Yukon XL [0.00] 2018 BMW X5M [0.00]	I had the same problem, problem was fixed today....it was a bad O2 sensor......I also had a "Service Engine Soon" light on and would on occasion get a 1/2 engine limp code if I was on a really bumpy road..... new O2 sensor installed today and the car feels great!!
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07-24-2008, 11:23 PM	#6
Year's_End Lieutenant General 1138 Rep 12,444 Posts Drives: 2020 Shelby GT350 Join Date: Feb 2007 Location: FL iTrader: (0)	Damn, that's what I think the problem is with my car.^ I just installed a JB1 piggyback and my car has rough idles (drops to 500rpm at times), limp mode issues (solved easily by restarting the car, and doesn't occur too often), and unusual power deliveries when accelerating right after slowing down (not too frequent). __________________ Past: '08 E92 335i\|ZPP\|ZSP\|6AT Past: '15 Mustang GT\|401A\|PP\|6MT Current: '20 Shelby GT350\|6MT
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07-28-2012, 06:49 AM	#11
Billy335 Registered 0 Rep 2 Posts Drives: 2008 335xi Join Date: Jul 2012 Location: Utica ny iTrader: (0)	So it's been a few day since I have been to the dealer they checked over the computer and they came up with this solution. Go buy two bottles of chevron techron. Put one in at a half tank and run it low. Then fill up and put in the other. Believe it or not it has helped still a little rough when cold but other than that it's not bad. My car is also bone stock at the moment.
	Appreciate 0 Quote