E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > 3 stage intake manifold swap car can't idle



Reply
 
Thread Tools Search this Thread
      01-15-2017, 11:43 PM   #1
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

3 stage intake manifold swap car can't idle

Hey, i did a 3 stage intake manifold swap on my 328i and it wont idle. If i pat the gas itll sputter for a second or so until it gives up. Im running a bpc tune, and I'm waiting on it to load the stock tune but what should i check for when that isn't it?
__________________
Appreciate 0
      01-15-2017, 11:46 PM   #2
E82IsTheWay!
First Lieutenant
E82IsTheWay!'s Avatar
6
Rep
306
Posts

Drives: Awaiting new car
Join Date: Sep 2013
Location: Florida

iTrader: (8)

did you plug the hose in thats located next to the throttle body.
Appreciate 0
      01-15-2017, 11:52 PM   #3
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

Quote:
Originally Posted by e90dum View Post
Hey, i did a 3 stage intake manifold swap on my 328i and it wont idle. If i pat the gas itll sputter for a second or so until it gives up. Im running a bpc tune, and I'm waiting on it to load the stock tune but what should i check for when that isn't it?
Stock tune doesnt work. Which one? Ill double check everything with the pelicon parts guide
Appreciate 0
      01-15-2017, 11:59 PM   #4
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

Okay, so if i disconnect my maf it idles. Any ideas? -_-
Appreciate 0
      01-16-2017, 12:10 AM   #5
TheAxiom
Banned
TheAxiom's Avatar
Japan
1594
Rep
7,263
Posts

Drives: E92 6 Speed
Join Date: Nov 2013
Location: Florida

iTrader: (5)

Pull the codes and clean the MAF.
Appreciate 0
      01-16-2017, 12:21 AM   #6
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

Quote:
Originally Posted by TheAxiom View Post
Pull the codes and clean the MAF.
Cleaned the maf (what i could do) and no change. Im gonna go drive 15 miles and get some codes
Appreciate 0
      01-16-2017, 12:27 AM   #7
W37V
Major
No_Country
215
Rep
1,310
Posts

Drives: Car
Join Date: Aug 2014
Location: Location

iTrader: (0)

Quote:
Originally Posted by e90dum View Post
Cleaned the maf (what i could do) and no change. Im gonna go drive 15 miles and get some codes
Re-check everything. It's possible you could have a vacuum leak.

Did you connect all hoses? Did you connect your throttle body connections?
Appreciate 0
      01-16-2017, 12:44 AM   #8
dstrickland
Banned
223
Rep
325
Posts

Drives: BMW 06 325I
Join Date: Mar 2016
Location: Atlanta, Ga, USA

iTrader: (0)

Quote:
Originally Posted by W37V View Post
Quote:
Originally Posted by e90dum View Post
Cleaned the maf (what i could do) and no change. Im gonna go drive 15 miles and get some codes
Re-check everything. It's possible you could have a vacuum leak.

Did you connect all hoses? Did you connect your throttle body connections?
+1. Make sure your throttle body connector is seated all the way.
Appreciate 0
      01-16-2017, 12:45 AM   #9
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

Quote:
Originally Posted by W37V View Post
Re-check everything. It's possible you could have a vacuum leak.

Did you connect all hoses? Did you connect your throttle body connections?
Right now im convinced its the maf. Idk how that broke. Im driving around with it unplugged with no problems. Unrelated, but now the car now wont apply any gas while i press the brake. In gear or not. Ugh.....
Appreciate 0
      01-16-2017, 12:49 AM   #10
dstrickland
Banned
223
Rep
325
Posts

Drives: BMW 06 325I
Join Date: Mar 2016
Location: Atlanta, Ga, USA

iTrader: (0)

Quote:
Originally Posted by e90dum View Post
Quote:
Originally Posted by W37V View Post
Re-check everything. It's possible you could have a vacuum leak.

Did you connect all hoses? Did you connect your throttle body connections?
Right now im convinced its the maf. Idk how that broke. Im driving around with it unplugged with no problems. Unrelated, but now the car now wont apply any gas while i press the brake. In gear or not. Ugh.....
Did you pull the codes? If something's unplugged that will pinpoint the issue.

Did you actually remove the maf out of the air box when you did the swap? There shouldn't have been a need to...

What your describing really does sound like your throttle body connector is unplugged or not seated all the way(sometimes you have to push them on pretty hard).
Appreciate 0
      01-16-2017, 12:56 AM   #11
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

I didnít swap the airbox, put the stock one back in. Codes are p116e and p0113. The car does not work with the maf plugged in so assume it isnt plugged in until further notice
Appreciate 0
      01-16-2017, 01:03 AM   #12
dstrickland
Banned
223
Rep
325
Posts

Drives: BMW 06 325I
Join Date: Mar 2016
Location: Atlanta, Ga, USA

iTrader: (0)

Quote:
Originally Posted by e90dum View Post
I didnít swap the airbox, put the stock one back in. Codes are p116e and p0113. The car does not work with the maf plugged in so assume it isnt plugged in until further notice
I get you put the stock air box in, my question is when you pulled the airbox out for the swap, did you actually remove the maf from the airbox.
Appreciate 0
      01-16-2017, 01:13 AM   #13
dstrickland
Banned
223
Rep
325
Posts

Drives: BMW 06 325I
Join Date: Mar 2016
Location: Atlanta, Ga, USA

iTrader: (0)

Well those 2 codes are definitely maf related. It's yet odd that it took a dump when you did the swap. You didn't pinch any wires at the junction box under the manifold did you?
Appreciate 0
      01-16-2017, 01:15 AM   #14
justpete
Brigadier General
United_States
693
Rep
3,559
Posts

Drives: '11 328i '16 550i
Join Date: Jan 2012
Location: DFW

iTrader: (0)

Garage List
2011 BMW 328i  [4.33]
2016 BMW 550i  [4.12]
Dumb question but is it possible to force the connector upside down? Or force a pin to come loose and not connect? Or the cable got cut and shorted, grounded, or opened during the installation?
__________________
2011 E90 328i ZSP 6MT, 2960#, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+Burns, AKG eng, UUC trans, Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, all Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 8pt cage+FIA, Braille, RT DL1Mk3
Appreciate 0
      01-16-2017, 01:19 AM   #15
dstrickland
Banned
223
Rep
325
Posts

Drives: BMW 06 325I
Join Date: Mar 2016
Location: Atlanta, Ga, USA

iTrader: (0)

Quote:
Originally Posted by justpete View Post
Dumb question but is it possible to force the connector upside down? Or force a pin to come loose and not connect? Or the cable got cut and shorted, grounded, or opened during the installation?
I guess you could technically put it in upside down, you'd have to really force it. The clip connector kinda clues you in that it's going in right though.

He could check the pins on the maf. The Maf harness goes to a junction box that he would have to take off the manifold, its extremely possible it got pinched or linked in between something.
Appreciate 0
      01-16-2017, 01:26 AM   #16
justpete
Brigadier General
United_States
693
Rep
3,559
Posts

Drives: '11 328i '16 550i
Join Date: Jan 2012
Location: DFW

iTrader: (0)

Garage List
2011 BMW 328i  [4.33]
2016 BMW 550i  [4.12]
Quote:
Originally Posted by dstrickland View Post
I guess you could technically put it in upside down, you'd have to really force it. The clip connector kinda clues you in that it's going in right though.

He could check the pins on the maf. The Maf harness goes to a junction box that he would have to take off the manifold, its extremely possible it got pinched or linked in between something.
Yeah, I know it's keyed but I've not tried to force it so not sure if it's even physically possible but if it's old and the plastic's brittle, you're tired, not paying attention, etc. maybe it's possible. Seems like a huge stretch though. Mucking up the wires or pinching them under something else near the junction box or at it seems more likely.

It does sound like the DME can read the MAF but is getting unusable info so maybe the heater isn't connected somehow, three pins right? Just thinking out loud.
__________________
2011 E90 328i ZSP 6MT, 2960#, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+Burns, AKG eng, UUC trans, Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, all Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 8pt cage+FIA, Braille, RT DL1Mk3
Appreciate 0
      01-16-2017, 01:30 AM   #17
dstrickland
Banned
223
Rep
325
Posts

Drives: BMW 06 325I
Join Date: Mar 2016
Location: Atlanta, Ga, USA

iTrader: (0)

Quote:
Originally Posted by justpete View Post
Quote:
Originally Posted by dstrickland View Post
I guess you could technically put it in upside down, you'd have to really force it. The clip connector kinda clues you in that it's going in right though.

He could check the pins on the maf. The Maf harness goes to a junction box that he would have to take off the manifold, its extremely possible it got pinched or linked in between something.
Yeah, I know it's keyed but I've not tried to force it so not sure if it's even physically possible but if it's old and the plastic's brittle, you're tired, not paying attention, etc. maybe it's possible. Seems like a huge stretch though. Mucking up the wires or pinching them under something else near the junction box or at it seems more likely.

It does sound like the DME can read the MAF but is getting unusable info so maybe the heater isn't connected somehow, three pins right? Just thinking out loud.
Right. His 2nd code is AIT sensor circuit high. Most circuit high codes or from faulty wiring altering resistance.

OP take your airbox off & trace the maf wire, while your at it, double check everything connected to that junction box. You may save yourself $200 on a maf spending an extra 20min digging in there.
Appreciate 0
      01-16-2017, 01:34 AM   #18
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

Quote:
Originally Posted by dstrickland View Post
Right. His 2nd code is AIT sensor circuit high. Most circuit high codes or from faulty wiring altering resistance.

OP take your airbox off & trace the maf wire, while your at it, double check everything connected to that junction box. You may save yourself $200 on a maf spending an extra 20min digging in there.
Okay, give me a minute on the airbox. I'm not going to check the other wires until tomorrow though I'm exhausted and i also know i probably did it right
Appreciate 0
      01-16-2017, 01:38 AM   #19
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

The maf wire goes to the junction box y'all are talking about so im not sure if it would be possible to pinch it.

I am also now freeking at the possibility of a $200 part. Maybe it is a cable unplugged... because when i try to apply gas while there is any brake nothing happens.
Appreciate 0
      01-16-2017, 01:45 AM   #20
dstrickland
Banned
223
Rep
325
Posts

Drives: BMW 06 325I
Join Date: Mar 2016
Location: Atlanta, Ga, USA

iTrader: (0)

Quote:
Originally Posted by e90dum View Post
The maf wire goes to the junction box y'all are talking about so im not sure if it would be possible to pinch it.

I am also now freeking at the possibility of a $200 part. Maybe it is a cable unplugged... because when i try to apply gas while there is any brake nothing happens.
That why I said trace all the cable from that junction box. Just about every cable you would have had to unplug for the install leads there.

Mafs usually gives symptoms their dying, they don't normally go from 100% to 0%. Also make sure everything intake wise(airbox, throttle body, manifold) are seated right. Finally check the crankcase hose to the valve cover to intake manifold.
Appreciate 0
      01-16-2017, 02:04 AM   #21
e90dum
Second Lieutenant
25
Rep
237
Posts

Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

iTrader: (0)

Quote:
Originally Posted by dstrickland View Post
That why I said trace all the cable from that junction box. Just about every cable you would have had to unplug for the install leads there.

Mafs usually gives symptoms their dying, they don't normally go from 100% to 0%. Also make sure everything intake wise(airbox, throttle body, manifold) are seated right. Finally check the crankcase hose to the valve cover to intake manifold.
Ugh... so sorry to waste everyone's time but i see a wire unplugged from the throttle body. Will check back in a minute
Appreciate 0
      01-16-2017, 02:23 AM   #22
dstrickland
Banned
223
Rep
325
Posts

Drives: BMW 06 325I
Join Date: Mar 2016
Location: Atlanta, Ga, USA

iTrader: (0)

Quote:
Originally Posted by e90dum View Post
Quote:
Originally Posted by dstrickland View Post
That why I said trace all the cable from that junction box. Just about every cable you would have had to unplug for the install leads there.

Mafs usually gives symptoms their dying, they don't normally go from 100% to 0%. Also make sure everything intake wise(airbox, throttle body, manifold) are seated right. Finally check the crankcase hose to the valve cover to intake manifold.
Ugh... so sorry to waste everyone's time but i see a wire unplugged from the throttle body. Will check back in a minute
Haha let us know, your symptoms sounded like a throttle body ordeal.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -4. The time now is 12:13 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST