Whistling intake HELP

joe 5.0 · April 8th, 2007, 09:54 PM

Hey just got my new 89 lx with a 351 from a ford lightning in her. she runs nice and strong but one problem i have is the idle. 76 mm maf 70 mm bbk tb gt 40 intake and heads 24 lbs injectors.

First the idle goes up and down

second there is a whistle coming from the intake that changes pitch with the idle

Idle runs about 800 rpm in drive

when in park or neutral it goes from 800 - 1300 rpm up and down

also i only hear the wisle when its in park or nuetral.

im thinking intake leak anyone have this problem before?

john0315 · April 8th, 2007, 10:18 PM

mm got a cold air intake?

sb2f5marine69 · April 8th, 2007, 10:30 PM

Same problem here, I called edelbrock and asked them what it was and they said if i can figure it out let them know so they can pass it on.

Tony_90fox · April 8th, 2007, 10:31 PM

I will almost bet money it is the BBk throttle body that is whistling.

sb2f5marine69 · April 8th, 2007, 10:38 PM

I have a professional products though and it does the same thing.

joe 5.0 · April 8th, 2007, 10:40 PM

yes cold air intake

but sounds like its between runners and intake

Tony_90fox · April 8th, 2007, 10:44 PM

Originally Posted by sb2f5marine69

I have a professional products though and it does the same thing.

Alot of aftermarket tb's whistle. I have a few buds with accufab and they make no noise though.

joe 5.0 · April 8th, 2007, 10:44 PM

Same problem here, I called edelbrock and asked them what it was and they said if i can figure it out let them know so they can pass it on.

have you tried the gasket between runners and intake.

joe 5.0 · April 8th, 2007, 10:46 PM

maybe it is the throttle body

than what would cause the idle to change

sb2f5marine69 · April 8th, 2007, 10:47 PM

yes but mine are wet with fuel, ive put 3 sets on it and tried it with black silicon and still get it. Ive torqued it to 20 ftlbs. in sequence everytime but the whistle is still there.

flamestang · April 8th, 2007, 11:30 PM

HI I have a Holley systemax intake C&L 76mm with Holley 75mm throttle body and trickflow egr delete it does not wisltes.I had a Holley 70mm and a 70mm egr spacer and it wistled at idle and three grand.I think the egr spacer hole was making the wistle.

89LX347 · April 8th, 2007, 11:34 PM

i have the same problem and mine is freakin loud..i have had people tell me its a vacum leak tho

5.0 · April 9th, 2007, 12:13 AM

I have the Professional Products TB also, it whistles but only when Im gettting on it, never at idle or even less than 3k for that matter. It doesnt bother me, I kinda like it!

B.A.M302 · April 9th, 2007, 02:54 AM

Yeah mine whistles too, but not at idle I have a 75mm TB and it only happens when i get on it.

Gen1sve · April 9th, 2007, 12:39 PM

I have a 70mm BBK throttle body and it whistles just off idle while driving.

89LX347 · April 9th, 2007, 01:25 PM

everyone thinks i have a huge supercharger

john0315 · April 9th, 2007, 01:47 PM

My dodge neon does it everytime the cai slips off the throttle body. My hyundai accent did it because of the cheap air filter it came with. Check those to see if it helps any.

cali 5.0 · April 9th, 2007, 02:56 PM

sounds like its not hooked up right.. double check ur vacuum lines at the back of the intake manifold... they might not be on good enough

sb2f5marine69 · April 9th, 2007, 09:35 PM

Everything is hooked up right.

bottlefed5.0 · April 9th, 2007, 10:11 PM

its the egr spacer

April 8th, 2007, 09:54 PM	#1
joe 5.0 Regular 1993 notch Join Date: Mar 2007 Location: Stamford CT Posts: 105 iTrader: 0 reviews	Whistling intake HELP Hey just got my new 89 lx with a 351 from a ford lightning in her. she runs nice and strong but one problem i have is the idle. 76 mm maf 70 mm bbk tb gt 40 intake and heads 24 lbs injectors. First the idle goes up and down second there is a whistle coming from the intake that changes pitch with the idle Idle runs about 800 rpm in drive when in park or neutral it goes from 800 - 1300 rpm up and down also i only hear the wisle when its in park or nuetral. im thinking intake leak anyone have this problem before?

April 8th, 2007, 10:18 PM	#2
john0315 Newbie Join Date: Mar 2007 Location: Dadeville,Alabama Posts: 35 iTrader: 0 reviews	mm got a cold air intake? __________________ American Muscle Against Ricers. Member #6920.

April 8th, 2007, 10:31 PM	#4
Tony_90fox Banned Join Date: Jun 2006 Location: Bowling Green, KY Posts: 3,831 iTrader: 0 reviews	I will almost bet money it is the BBk throttle body that is whistling. __________________ [SIGPIC][/SIGPIC] [B][U]MM Sapper Squad[/U][/B] [QUOTE=Regency 2007;1676187]MSO's stupidity has never stopped amazing me since the day he joined this forum.[/QUOTE]

April 9th, 2007, 12:13 AM	#13
5.0 Newbie Join Date: Mar 2007 Location: Bay City, MI Posts: 33 iTrader: 0 reviews	I have the Professional Products TB also, it whistles but only when Im gettting on it, never at idle or even less than 3k for that matter. It doesnt bother me, I kinda like it! __________________ 1988 Ford Mustang GT MySpace

April 9th, 2007, 02:54 AM	#14
B.A.M302 Regular Join Date: Jan 2007 Location: maryland Posts: 89 iTrader: 0 reviews	Yeah mine whistles too, but not at idle I have a 75mm TB and it only happens when i get on it. __________________ Crate 302, Trick Flow Intake R, 75mm MAF, bbk 75mm throttle body, bbk 76mm EGR spacer, 351 Winsor heads ported and polished by Bennet Racing, Lunati cam, 30 pd. Injectors, TKO 500, aluminum drive shaft, bbk mid length headers, bbk off road H pipe, 3:55,

April 8th, 2007, 10:30 PM	#3
sb2f5marine69 Regular Join Date: Feb 2007 Location: Jville,NC Posts: 197 iTrader: 0 reviews	Same problem here, I called edelbrock and asked them what it was and they said if i can figure it out let them know so they can pass it on.

April 8th, 2007, 10:38 PM	#5
sb2f5marine69 Regular Join Date: Feb 2007 Location: Jville,NC Posts: 197 iTrader: 0 reviews	I have a professional products though and it does the same thing.

April 8th, 2007, 10:40 PM	#6
joe 5.0 Regular 1993 notch Join Date: Mar 2007 Location: Stamford CT Posts: 105 iTrader: 0 reviews	yes cold air intake but sounds like its between runners and intake

April 8th, 2007, 10:44 PM	#8
joe 5.0 Regular 1993 notch Join Date: Mar 2007 Location: Stamford CT Posts: 105 iTrader: 0 reviews	Same problem here, I called edelbrock and asked them what it was and they said if i can figure it out let them know so they can pass it on. have you tried the gasket between runners and intake.

April 8th, 2007, 10:46 PM	#9
joe 5.0 Regular 1993 notch Join Date: Mar 2007 Location: Stamford CT Posts: 105 iTrader: 0 reviews	maybe it is the throttle body than what would cause the idle to change

April 8th, 2007, 10:47 PM	#10
sb2f5marine69 Regular Join Date: Feb 2007 Location: Jville,NC Posts: 197 iTrader: 0 reviews	yes but mine are wet with fuel, ive put 3 sets on it and tried it with black silicon and still get it. Ive torqued it to 20 ftlbs. in sequence everytime but the whistle is still there.

April 8th, 2007, 11:30 PM	#11
flamestang Regular Join Date: Apr 2007 Posts: 338 iTrader: 0 reviews	HI I have a Holley systemax intake C&L 76mm with Holley 75mm throttle body and trickflow egr delete it does not wisltes.I had a Holley 70mm and a 70mm egr spacer and it wistled at idle and three grand.I think the egr spacer hole was making the wistle.

April 8th, 2007, 11:34 PM	#12
89LX347 Hardcore Enthusiast Join Date: Apr 2007 Posts: 1,304 iTrader: 0 reviews	i have the same problem and mine is freakin loud..i have had people tell me its a vacum leak tho

April 9th, 2007, 12:39 PM	#15
Gen1sve Newbie Join Date: Feb 2007 Location: Wilmington, De. Posts: 11 iTrader: 0 reviews	I have a 70mm BBK throttle body and it whistles just off idle while driving.

April 9th, 2007, 01:25 PM	#16
89LX347 Hardcore Enthusiast Join Date: Apr 2007 Posts: 1,304 iTrader: 0 reviews	everyone thinks i have a huge supercharger

April 9th, 2007, 01:47 PM	#17
john0315 Newbie Join Date: Mar 2007 Location: Dadeville,Alabama Posts: 35 iTrader: 0 reviews	My dodge neon does it everytime the cai slips off the throttle body. My hyundai accent did it because of the cheap air filter it came with. Check those to see if it helps any. __________________ American Muscle Against Ricers. Member #6920.

April 9th, 2007, 02:56 PM	#18
cali 5.0 Regular Join Date: May 2006 Location: grand prairie tx Posts: 383 iTrader: 0 reviews	sounds like its not hooked up right.. double check ur vacuum lines at the back of the intake manifold... they might not be on good enough __________________ 89 gt 3.73 gears, full exhaust, holley system max2 intake manifold, 70mm throttle body, jet chip

April 9th, 2007, 09:35 PM	#19
sb2f5marine69 Regular Join Date: Feb 2007 Location: Jville,NC Posts: 197 iTrader: 0 reviews	Everything is hooked up right.

April 9th, 2007, 10:11 PM	#20
bottlefed5.0 Newbie 2008 mustang gt Join Date: Apr 2007 Location: GEORGIA Posts: 2 iTrader: 0 reviews	its the egr spacer

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