Surging and poor Throttle Response after mod

Aviatrix · June 14th, 2007, 04:08 PM

I'm looking for suggestions on what might be causing a problem I'm seeing after I recently installed a BBK Cold Air intake and Throttle body on my 2001 V6. I installed these parts along with a new set of NGK iridium plugs and new plug wires.

Now, after putting it all together I am getting a terrible pause/surge when accelerating under load (up hills or trying to pass someone), and the throttle response just stinks. I am seeing a good half second or more delay in any acceleration when I kick it at all.

I'm thinking the Mass Air sensor is the problem, but I'm not sure.

Any ideas on what this might be?

HMUSN · June 14th, 2007, 04:10 PM

maf or a vaccum leak.

check your fittings

ByPopularDemand · June 14th, 2007, 06:04 PM

A bigger tb without a ported upper intake manifold can hurt performance

Aviatrix · June 14th, 2007, 06:39 PM

So does the MAF need to be replaced? or??? I have no idea where to start wit this problem. It is not a minor problem at all, the surge is really like tapping the break HARD all the way up the hill.

HMUSN · June 14th, 2007, 06:48 PM

if your maf was bad you would be throwing a code by now.

I personally think that you might have missed something when installing it or something came loose.

it happened to me when I had my v6.

car was sputtering hard out of no-where and eventually died.
I couldn't get it to start back up...

once I popped the hood I saw that the intake popped off at the elbow a little bit after the maf so it threw a false cel.
i put it back together and reset the battery and the car ran fine.

ByPopularDemand · June 14th, 2007, 07:51 PM

Check for vaccuum leaks, and if that doesn't help take off the tb

JASonic · June 14th, 2007, 11:01 PM

just wondering, what exhaust setup do you have? Is it still stock? Your pulling alot of air in now compared to before. Someone here once told me that the "speed" of the air coming in is just as important as volume. To increase both is ideal. Maybe dual exhausts will help balance things out. IDK...

I know that I lost power when I put in my first mod (exhaust). Then I put in a better intake and it made everything great. Inhale well, exhale better and you'll be safe.

cpork · June 15th, 2007, 01:34 AM

just because he installed a CAI doesnt make his exhaust too small. basically with the aftermarket CAI's they just move where the air is being brought in and give you the ability to draw more air (forced induction when you get it) a stock intake can still draw in alot of air. on a stock engine a CAI isnt gonna give you so much airflow that you need a bigger exhaust. personally i would check all of the sensor fittings and make sure that a sensor plug wasent sealed.

sbland26 · June 15th, 2007, 02:00 AM

I had many problems with mine when i installed it. I had to take it to the Ford Dealership and they found a piece broke where the throttle body connects to the wiring and then they tuned it. Now it works amazing...you might have to do the same

Onemanzu · June 15th, 2007, 04:17 AM

yea sounds like a bad connection between the sensors and computer

JASonic · June 15th, 2007, 07:41 AM

What about the aftermarket throttle body? Im just thinking out loud... does that let more air through????

Ole Yeller · June 15th, 2007, 07:47 AM

when it does kick in, does it kick in with full power??

plug wire in the wrong spot...

cpork · June 15th, 2007, 11:12 AM

Originally Posted by ja002gl

What about the aftermarket throttle body? Im just thinking out loud... does that let more air through????

it does but doesnt allow significantly more. not so much that it would be a problem. hell, check the gasket on the tb.

Juggalo_X · June 15th, 2007, 11:33 AM

BBK with a TB should have a tune your getting more air and ur car don't know what to do with it. Ive read a few times where people get weird things with the BBk intakes and TB a tune fixed there issues.

Aviatrix · June 15th, 2007, 12:36 PM

I've double and triple checked all the plug wires (it isn't missing all the time, just on load with a surge too), all the gaskets and seals seem to be in place. One thing that does bother me is the seal in the extra hole that existed in the top tube on the cold air kit. There was nothing in the instructions about what to do with that - so I plugged it with what seemed like the right piece.

I have to say it... the instructions with that cold air kit just sucked. So, I really have marginal confidence that this is installed perfectly correct.

I may just take it to Ford and just drop the dime to get them to tune it. I am getting an occasional code from something, but it has not dropped anything on me in the last couple of days.

Juggalo_X · June 15th, 2007, 12:59 PM

Originally Posted by Aviatrix

I've double and triple checked all the plug wires (it isn't missing all the time, just on load with a surge too), all the gaskets and seals seem to be in place. One thing that does bother me is the seal in the extra hole that existed in the top tube on the cold air kit. There was nothing in the instructions about what to do with that - so I plugged it with what seemed like the right piece.

I have to say it... the instructions with that cold air kit just sucked. So, I really have marginal confidence that this is installed perfectly correct.

I may just take it to Ford and just drop the dime to get them to tune it. I am getting an occasional code from something, but it has not dropped anything on me in the last couple of days.

Ford wont tune your car. Ford Motor Company Strictly Prohibits any ford dealership From modifying Ford PCM's. You will have to take it to a performance shop for a tune. and also make sure that Hole is plugged thats the spot for the IAT some cars don't have it. On the air box any more. Ur probably getting un maff'd air through that hole.

botlfed1 · June 15th, 2007, 01:27 PM

this may sound really dumb, but make sure the filter/maf is still connected to your pipe. I had a similar problem after my vortech was installed. One day I started driving and the thing kept surging and I would stomp the gas and maybe a sec or 2 later it would catch up. So I pull over and turns out the filter with the maf connected to it had separated itself from the rest of the pipe down in the fender, and it was just hanging there by the plug going into the maf. So the engine wasnt breathing good. Stuck it back on there and tightened the hose clamp and it was good to go.

Aviatrix · June 15th, 2007, 02:41 PM

well that fender installation is a pain - took me a couple of hours to get it up there and on the pipe since it goes in through the bottom of the fender and not through the hole on top. It is a completely blind installation of that thing - so good point. I'll check it on that side again to make sure I am getting a good seal everywhere.

botlfed1 · June 15th, 2007, 05:22 PM

yeah it's especially hard if you dont have anyone to help you hold it still while you are under the car with your arm in the air.

El_Cangri · June 15th, 2007, 06:31 PM

Originally Posted by cpork

Originally Posted by ja002gl

What about the aftermarket throttle body? Im just thinking out loud... does that let more air through????

it does but doesnt allow significantly more. not so much that it would be a problem. hell, check the gasket on the tb.

It doesn't anymore air if ur not ported... is like having a 4 ft door with a 4 ft ceiling.. then u change the door to a 7 ft one but dont adjust the ceiling... it would be the same as having the 4ft door cause the ceiling is restricting....

besides that check all connection maybe u got a sensor mixed. Vacuum leak or w/e.... after that get a port and polish to really see performance gains

June 14th, 2007, 04:08 PM	#1
Aviatrix Newbie Join Date: Feb 2007 Posts: 12	Surging and poor Throttle Response after mod I'm looking for suggestions on what might be causing a problem I'm seeing after I recently installed a BBK Cold Air intake and Throttle body on my 2001 V6. I installed these parts along with a new set of NGK iridium plugs and new plug wires. Now, after putting it all together I am getting a terrible pause/surge when accelerating under load (up hills or trying to pass someone), and the throttle response just stinks. I am seeing a good half second or more delay in any acceleration when I kick it at all. I'm thinking the Mass Air sensor is the problem, but I'm not sure. Any ideas on what this might be?

June 14th, 2007, 06:04 PM	#3
ByPopularDemand Hardcore Enthusiast 2000 V6 Join Date: Jan 2007 Location: Albuquerque Posts: 2,559	A bigger tb without a ported upper intake manifold can hurt performance __________________ 2000 V6 vert Mac LT headers, Mac O/R H-pipe, Mac CAI, ASP 25% underdrive pulley(r.i.p), SCT tune, 8.8 rear and 4.10 gears.

June 14th, 2007, 07:51 PM	#6
ByPopularDemand Hardcore Enthusiast 2000 V6 Join Date: Jan 2007 Location: Albuquerque Posts: 2,559	Check for vaccuum leaks, and if that doesn't help take off the tb __________________ 2000 V6 vert Mac LT headers, Mac O/R H-pipe, Mac CAI, ASP 25% underdrive pulley(r.i.p), SCT tune, 8.8 rear and 4.10 gears.

June 14th, 2007, 11:01 PM	#7
JASonic The George Forman of Keepers Join Date: Feb 2007 Posts: 2,243	just wondering, what exhaust setup do you have? Is it still stock? Your pulling alot of air in now compared to before. Someone here once told me that the "speed" of the air coming in is just as important as volume. To increase both is ideal. Maybe dual exhausts will help balance things out. IDK... I know that I lost power when I put in my first mod (exhaust). Then I put in a better intake and it made everything great. Inhale well, exhale better and you'll be safe. __________________ GHOSTANG 2230

June 15th, 2007, 07:41 AM	#11
JASonic The George Forman of Keepers Join Date: Feb 2007 Posts: 2,243	What about the aftermarket throttle body? Im just thinking out loud... does that let more air through???? __________________ GHOSTANG 2230

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June 14th, 2007, 06:39 PM	#4
Aviatrix Newbie Join Date: Feb 2007 Posts: 12	So does the MAF need to be replaced? or??? I have no idea where to start wit this problem. It is not a minor problem at all, the surge is really like tapping the break HARD all the way up the hill.

June 15th, 2007, 01:34 AM	#8
cpork Newbie 1997 Mustang GT Join Date: Jan 2007 Location: Fort Hood, TX Posts: 22	just because he installed a CAI doesnt make his exhaust too small. basically with the aftermarket CAI's they just move where the air is being brought in and give you the ability to draw more air (forced induction when you get it) a stock intake can still draw in alot of air. on a stock engine a CAI isnt gonna give you so much airflow that you need a bigger exhaust. personally i would check all of the sensor fittings and make sure that a sensor plug wasent sealed.

June 15th, 2007, 02:00 AM	#9
sbland26 Regular 2004 Mustang Mach 1 Join Date: Mar 2007 Location: Maryville, Illinois Posts: 200	I had many problems with mine when i installed it. I had to take it to the Ford Dealership and they found a piece broke where the throttle body connects to the wiring and then they tuned it. Now it works amazing...you might have to do the same

June 15th, 2007, 07:47 AM	#12
Ole Yeller Regular Join Date: Jun 2007 Location: Naples, FL - God's waiting room Posts: 358	when it does kick in, does it kick in with full power?? plug wire in the wrong spot... __________________ So this guy and his friend were like wanna race? i was like :stupid- the light turned and we and I went and his friend was like you got and I was like and went home and his wife. The End

June 15th, 2007, 11:33 AM	#14
Juggalo_X MM Ninja / Site Moderator 2001 Mustang 232/CBR600 14+@Slow Join Date: Jan 2007 Location: South Western Ontario Posts: 6,697	BBK with a TB should have a tune your getting more air and ur car don't know what to do with it. Ive read a few times where people get weird things with the BBk intakes and TB a tune fixed there issues.

June 15th, 2007, 12:36 PM	#15
Aviatrix Newbie Join Date: Feb 2007 Posts: 12	I've double and triple checked all the plug wires (it isn't missing all the time, just on load with a surge too), all the gaskets and seals seem to be in place. One thing that does bother me is the seal in the extra hole that existed in the top tube on the cold air kit. There was nothing in the instructions about what to do with that - so I plugged it with what seemed like the right piece. I have to say it... the instructions with that cold air kit just sucked. So, I really have marginal confidence that this is installed perfectly correct. I may just take it to Ford and just drop the dime to get them to tune it. I am getting an occasional code from something, but it has not dropped anything on me in the last couple of days.

June 15th, 2007, 01:27 PM	#17
botlfed1 Newbie Join Date: Jun 2007 Posts: 20	this may sound really dumb, but make sure the filter/maf is still connected to your pipe. I had a similar problem after my vortech was installed. One day I started driving and the thing kept surging and I would stomp the gas and maybe a sec or 2 later it would catch up. So I pull over and turns out the filter with the maf connected to it had separated itself from the rest of the pipe down in the fender, and it was just hanging there by the plug going into the maf. So the engine wasnt breathing good. Stuck it back on there and tightened the hose clamp and it was good to go. __________________ 431rwhp 391rwtq Fayetteville, NC

June 15th, 2007, 02:41 PM	#18
Aviatrix Newbie Join Date: Feb 2007 Posts: 12	well that fender installation is a pain - took me a couple of hours to get it up there and on the pipe since it goes in through the bottom of the fender and not through the hole on top. It is a completely blind installation of that thing - so good point. I'll check it on that side again to make sure I am getting a good seal everywhere.

June 15th, 2007, 05:22 PM	#19
botlfed1 Newbie Join Date: Jun 2007 Posts: 20	yeah it's especially hard if you dont have anyone to help you hold it still while you are under the car with your arm in the air. __________________ 431rwhp 391rwtq Fayetteville, NC

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