my car is acting crazy

SPC LV · 07-02-2007, 10:39 PM

Ok, I've got 6mt, PROcede.

I was cruising in fourth gear and decided to hit the gas about half way. The car started to pull for a split second, but when the boost was supposed to kick in the car started stuttering and shaking and making a weird sound like frfffrrrrrrr. I let go of the gas and hit it again and it pulled just fine. This has happened to me twice over the last week, both times in fourth gear going about 45mph. I'm not throwing any codes and have had the PROcede in for about a month.

Another thing I've noticed is that under normal driving conditions when I give the car a little gas just for fun the turbos spool pretty quick, but at wot I'm not getting boost until about 4500rpm's.

Any input is greatly appreciated.

OpenFlash · 07-03-2007, 12:53 AM

You have a boost leak by the sounds of it. Did you or anyone else ever mess around with your IC piping for any reason? Either that or it could be a faulty fuel pump. Just about any other cause would induce a code of some sort.

shiv

thealbert · 07-03-2007, 02:56 AM

Quote:

Originally Posted by shiv@vishnu

You have a boost leak by the sounds of it. Did you or anyone else ever mess around with your IC piping for any reason? Either that or it could be a faulty fuel pump. Just about any other cause would induce a code of some sort.

shiv

+1. Sounds like a leak too. I had a fuel pump problem before already and your issue doesn't immediately sound like a fuel pump problem, so I wouldn't worry about that. Check your hoses and make sure you don't have any leaks. Best of all, better to bring it to your dealer and have them check it out.

SPC LV · 07-03-2007, 05:29 PM

Quote:

Originally Posted by shiv@vishnu

You have a boost leak by the sounds of it. Did you or anyone else ever mess around with your IC piping for any reason? Either that or it could be a faulty fuel pump. Just about any other cause would induce a code of some sort.

shiv

Nobody ever messed with the IC. It happened to me again today, this time in third gear while I was trying to pass somebody. I gave it a moderate amount of gas and the car made the crazy sound again and didnt move. The sound defanately sounds like the turbos are messing up in some way. Still not throwing any codes.

Shiv, do you think that if the two hoses that I connected to each other from the boost solenoid could be leaking if they aren't connected tight enough? Would that even be a concern with the problem that I'm having?

Thanks.

e.n335 · 07-03-2007, 05:36 PM

Quote:

Originally Posted by SPC LV

Nobody ever messed with the IC. It happened to me again today, this time in third gear while I was trying to pass somebody. I gave it a moderate amount of gas and the car made the crazy sound again and didnt move. The sound defanately sounds like the turbos are messing up in some way. Still not throwing any codes.

Shiv, do you think that if the two hoses that I connected to each other from the boost solenoid could be leaking if they aren't connected tight enough? Would that even be a concern with the problem that I'm having?

Thanks.

Connect the long hose directly to the T connector to verify. This will be the most easy way to find out. BTW, this method is from Terry335 and I like it

.

SPC LV · 07-03-2007, 05:50 PM

Quote:

Originally Posted by eugen.niederreiter

Connect the long hose directly to the T connector to verify. This will be the most easy way to find out. BTW, this method is from Terry335 and I like it

.

Ok I see what youre saying. So if that was leaking and I connect it straight to the t fitting the problem should go away? Do you think a leak there would cause the problem I'm having?

e.n335 · 07-03-2007, 05:58 PM

Quote:

Originally Posted by SPC LV

Ok I see what youre saying. So if that was leaking and I connect it straight to the t fitting the problem should go away? Do you think a leak there would cause the problem I'm having?

You have an unusual proplem, I think it's worth a try. Load the v1.47LBT map as well and reset the ECU ( Comms - reset ECU ) after that. BTW, do you have other mod's ?

jon@themshop · 07-03-2007, 06:02 PM

I think you should disconnect the PROcede, install the supplied bypass plugs, put the vacuum hoses back to stock and see if the problem is still there.

Carlito12 · 07-03-2007, 06:06 PM

Quote:

Originally Posted by jon@themshop

I think you should remove the PROcede, install the supplied bypass plugs, put the vacuum hoses back to stock and see if the problem is still there.

and if the problem persists, take it to the dealership. good luck.

SPC LV · 07-03-2007, 07:13 PM

Quote:

Originally Posted by shiv@vishnu

You have a boost leak by the sounds of it. Did you or anyone else ever mess around with your IC piping for any reason? Either that or it could be a faulty fuel pump. Just about any other cause would induce a code of some sort.

shiv

Shiv I think you are right about the boost leak. I took the car out and tried to replicate the problem but was only able to replicate it once. What I did notice is that even when it's not shuttering it's not pulling smoothly. It kind of hiccups a little here and there when i give it a good amount of gas. This happens from low rpms about 2000rpm in third or fourth gear and once it's under boost i can feel the car slightly shutter at intermitent interval all the way up to redline.

Do you think the solenoid hoses have something to do with the leak? Thanks

07-02-2007, 10:39 PM	#1
SPC LV Private First Class 11 Rep 133 Posts Drives: 335i coupe Join Date: Jul 2006 Location: Wilm DE iTrader: (0)	my car is acting crazy Ok, I've got 6mt, PROcede. I was cruising in fourth gear and decided to hit the gas about half way. The car started to pull for a split second, but when the boost was supposed to kick in the car started stuttering and shaking and making a weird sound like frfffrrrrrrr. I let go of the gas and hit it again and it pulled just fine. This has happened to me twice over the last week, both times in fourth gear going about 45mph. I'm not throwing any codes and have had the PROcede in for about a month. Another thing I've noticed is that under normal driving conditions when I give the car a little gas just for fun the turbos spool pretty quick, but at wot I'm not getting boost until about 4500rpm's. Any input is greatly appreciated.
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07-03-2007, 12:53 AM	#2
OpenFlash 1737 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	You have a boost leak by the sounds of it. Did you or anyone else ever mess around with your IC piping for any reason? Either that or it could be a faulty fuel pump. Just about any other cause would induce a code of some sort. shiv
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07-03-2007, 06:02 PM	#8
jon@themshop Captain 38 Rep 762 Posts Drives: BMW Join Date: Apr 2007 Location: Los Angeles/Eagle Rock, CA iTrader: (8)	I think you should disconnect the PROcede, install the supplied bypass plugs, put the vacuum hoses back to stock and see if the problem is still there.
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