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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Jun-16-2018, 01:52:36 AM   #11
mrgizmo04
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Default Re: Random light throttle hiccup/stutter

Yeah a lot of bad gas around and it causes random issues!
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Originally Posted by cmenard View Post
Had the exact symptoms and they would disappear for some time and come back again. Finally traced it to getting gas at a local BP. Now I just avoid that station, and use a Shell down the road. No more hiccups.
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'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.
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Old Mon, Jun-18-2018, 04:27:48 PM   #12
cozmo kraemer
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Default Re: Random light throttle hiccup/stutter

I chased a stutter/light throttle hesitation for a really long time with my car. I replaced the actuator, both TPS sensors (with sensors sent to me by TTFS), replaced the VANOS, cleaned the throttle bodies, replace the plugs, etc etc.

It started to get really bad just recently so I bought two new BMW OE TPS sensors, I installed the front one right away and ... night and day ... completely fixed the issue.

So my money is on the throttle position sensor(s).
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2004 E46M3 - BBS RGR - RE11, BMW Motorsport 3.91, Eibach Pro Street S Coilovers (500/600), GC plates, SSV1 Headers/CPI slip fit catted/resonated section 1, Karbonious CSL intake, Shrick 280/272 cams, CSL DME Conversion, TTFS tune, OEM CSL front and rear seats

2010 - X5 4.8 Msport - the boring daily driver

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Old Mon, Jun-18-2018, 05:25:15 PM   #13
mrgizmo04
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Default Re: Random light throttle hiccup/stutter

Quote:
Originally Posted by cozmo kraemer View Post
I chased a stutter/light throttle hesitation for a really long time with my car. I replaced the actuator, both TPS sensors (with sensors sent to me by TTFS), replaced the VANOS, cleaned the throttle bodies, replace the plugs, etc etc.

It started to get really bad just recently so I bought two new BMW OE TPS sensors, I installed the front one right away and ... night and day ... completely fixed the issue.

So my money is on the throttle position sensor(s).
With these cars all sensors should be bought OE. I know they are sometimes 2x expensive vs alternatives but they really pay for themselves when you don't have to chase random issues sometimes literally few days after installing the cheaper ones.

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'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.
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Old Mon, Jun-18-2018, 07:12:04 PM   #14
cozmo kraemer
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Default Re: Random light throttle hiccup/stutter

Quote:
Originally Posted by mrgizmo04 View Post
With these cars all sensors should be bought OE. I know they are sometimes 2x expensive vs alternatives but they really pay for themselves when you don't have to chase random issues sometimes literally few days after installing the cheaper ones.

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Yeah, it is really odd. The sensors sent to me by TTFS appeared to be OE BMW. I guess I just don't know their age. Replacing the sensor completely fixed the issue though, immediately. I will say that the CSL tune seems to be much, MUCH, more sensitive to throttle issues. With the MAF setup, it would have driven fine, but with the CSL you get the issues. The sensors really have to be top notch to make the setup work.

Now driving it, it is pretty incredible how much I was actually driving around the issue. You only really notice that once it is fixed.
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2004 E46M3 - BBS RGR - RE11, BMW Motorsport 3.91, Eibach Pro Street S Coilovers (500/600), GC plates, SSV1 Headers/CPI slip fit catted/resonated section 1, Karbonious CSL intake, Shrick 280/272 cams, CSL DME Conversion, TTFS tune, OEM CSL front and rear seats

2010 - X5 4.8 Msport - the boring daily driver

My Journal

Previous - '95 M3, '94 FD RX7 (single turbo and LS6 swapped), '98 Integra Type R, '89 325i, '91 318, etc
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Old Mon, Jun-18-2018, 08:52:59 PM   #15
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Default Re: Random light throttle hiccup/stutter

Completely off topic, but before this post I'm writing, you and I had the same number of posts .
Quote:
Originally Posted by cozmo kraemer View Post
Yeah, it is really odd. The sensors sent to me by TTFS appeared to be OE BMW. I guess I just don't know their age. Replacing the sensor completely fixed the issue though, immediately. I will say that the CSL tune seems to be much, MUCH, more sensitive to throttle issues. With the MAF setup, it would have driven fine, but with the CSL you get the issues. The sensors really have to be top notch to make the setup work.

Now driving it, it is pretty incredible how much I was actually driving around the issue. You only really notice that once it is fixed.
Sent from my SM-G950U using Tapatalk
__________________
'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.
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Old Mon, Jun-18-2018, 09:56:04 PM   #16
cozmo kraemer
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Default Re: Random light throttle hiccup/stutter

Quote:
Originally Posted by mrgizmo04 View Post
Completely off topic, but before this post I'm writing, you and I had the same number of posts .

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Ironic.... Only took me 8 years longer to get there! (looking at our join dates)
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2004 E46M3 - BBS RGR - RE11, BMW Motorsport 3.91, Eibach Pro Street S Coilovers (500/600), GC plates, SSV1 Headers/CPI slip fit catted/resonated section 1, Karbonious CSL intake, Shrick 280/272 cams, CSL DME Conversion, TTFS tune, OEM CSL front and rear seats

2010 - X5 4.8 Msport - the boring daily driver

My Journal

Previous - '95 M3, '94 FD RX7 (single turbo and LS6 swapped), '98 Integra Type R, '89 325i, '91 318, etc
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Old Mon, Jun-18-2018, 09:59:35 PM   #17
mrgizmo04
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Default Re: Random light throttle hiccup/stutter

Quote:
Originally Posted by cozmo kraemer View Post
Ironic.... Only took me 8 years longer to get there! (looking at our join dates)
You are wise, you don't post as much nonsense as I do .

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__________________
'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.
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Old Mon, Jun-18-2018, 10:59:08 PM   #18
silvergray545
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Default Re: Random light throttle hiccup/stutter

Quote:
Originally Posted by cozmo kraemer View Post
I chased a stutter/light throttle hesitation for a really long time with my car. I replaced the actuator, both TPS sensors (with sensors sent to me by TTFS), replaced the VANOS, cleaned the throttle bodies, replace the plugs, etc etc.

It started to get really bad just recently so I bought two new BMW OE TPS sensors, I installed the front one right away and ... night and day ... completely fixed the issue.

So my money is on the throttle position sensor(s).
This is interesting. I replaced my top TPS with an OEM one. You could see where everything was ground off. I wonder if it's still subpar. Maybe I'll pick up a BMW sensor and give it a shot.
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Discussing Random light throttle hiccup/stutter in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)