Intake Backfiring

90mustang · November 12th, 2007, 05:43 PM

I HAVE A 90 MUSTANG WITH A LITTLE MODS DONE AND EVERYTIME I START IT UP IN THE MORNING IT WANTS TO STALL OUT AND WHEN I GO TO TAKE OFF IT STARTS BACKFIRING THOUGH THE INTAKE WONDERING WHAT IT IS. IF YOU CAN HELP PLEASE E-MAIL ME AT RYDENLOW88@AOL.COM

TurboLX · November 12th, 2007, 05:43 PM

modded?

87foxbodylx · November 12th, 2007, 05:48 PM

Is the spark plugs in the correct order? Sounds like a misfire?

the only thing i can think of is the timing may be off or your getting to much fuel.. what are your mods? have someone scan your computer chip for problems. My guess is a malfunctioning sensor

SALIV8 · November 12th, 2007, 05:52 PM

you probly have the firing order wrong

sonicblue · November 12th, 2007, 06:24 PM

it could be a bunch of things. check it for codes and let us know

Speedstang302 · November 12th, 2007, 06:35 PM

could be vaccum leak also..but prob firing order wrong, bad rotor...etc...

lineumup88 · November 12th, 2007, 08:43 PM

i think its the timing. try to bump it up a bit. my car loves 14 degrees. good luck

1slo5.0 · November 12th, 2007, 08:57 PM

Does it just do it when the engine is cold? What is the timing set at?

ridebmxfbm · November 12th, 2007, 09:27 PM

I also have the same problem, but mine only does it when the engine is cold.. is that normal? I gave the car a complete tune up, wires, rotor, cap, plugs, fuel filter, etc.. and it still does it

lineumup88 · November 12th, 2007, 10:01 PM

mine only did it when it was cold but when i set it at 14 degrees, it ironed its self out

ridebmxfbm · November 12th, 2007, 10:17 PM

mine does it when it's cold now and sometimes when its cold the rpm goes down about 4 mins in the warm it goes down likes its about to stall then up its nothing like the idle surge though I had that before...

November 12th, 2007, 05:43 PM	#1
90mustang Regular 1990 mustang gt Join Date: Apr 2007 Posts: 54 iTrader: 0 reviews	Intake Backfiring I HAVE A 90 MUSTANG WITH A LITTLE MODS DONE AND EVERYTIME I START IT UP IN THE MORNING IT WANTS TO STALL OUT AND WHEN I GO TO TAKE OFF IT STARTS BACKFIRING THOUGH THE INTAKE WONDERING WHAT IT IS. IF YOU CAN HELP PLEASE E-MAIL ME AT RYDENLOW88@AOL.COM

November 12th, 2007, 05:43 PM	#2
TurboLX I Post Entirely Way Too Much 1988 Mustang LX Turbo Join Date: Oct 2006 Location: NY Posts: 8,781 Blog Entries: 1 iTrader: 0 reviews	modded? __________________ 1988 LX Coupe 2.5L, GT35R, 44mm WG, 32psi, C16.

November 12th, 2007, 05:48 PM	#3
87foxbodylx Enthusiast 2004 Mustang GT TBD Join Date: Oct 2006 Location: Ephrata PA Posts: 695 iTrader: 0 reviews	Is the spark plugs in the correct order? Sounds like a misfire? the only thing i can think of is the timing may be off or your getting to much fuel.. what are your mods? have someone scan your computer chip for problems. My guess is a malfunctioning sensor __________________ HONDA: Hold on, Not done Accelerating A girl's legs are her best friends, but the best of friends must part. LIVE Tag- foxbody87 Last edited by 87foxbodylx; November 12th, 2007 at 05:50 PM.

November 12th, 2007, 06:24 PM	#5
sonicblue Hardcore Enthusiast 2013 Mustang GT 12.34@113.20 Join Date: Aug 2006 Location: San Antonio, TX / Dalzell, SC Posts: 1,635 iTrader: 2 reviews	it could be a bunch of things. check it for codes and let us know __________________ 2013 Mustang GT- 6sp, 3.31 Gears Recaro Seats, Brembo Brakes-Mods in garage 2004 Chevy Silverado 2500HD Duramax- DD with the usual go fast parts 1990 5.0 sold 2004 mustang gt 520rwhp, 491 trq sold

November 12th, 2007, 06:35 PM	#6
Speedstang302 I Post Entirely Way Too Much 1996 Mustang GT 13.64@101mph Join Date: Apr 2007 Location: Massachusetss Posts: 5,981 iTrader: 1 reviews	could be vaccum leak also..but prob firing order wrong, bad rotor...etc... __________________ 1990 GT- GT40p Heads\| Anderson N41 cam\| Crane 1.6 RR's\| Trickflow Intake\|Mac 1 3/4 Longtubes\| VRS O/R X-Pipe\| SLP LM1 Catback\|MGW Short Throw\| Aluminum d/s\| 3.73's.....still slow....

November 12th, 2007, 05:52 PM	#4
SALIV8 all motor 92 coupe 9.94@136.40 Join Date: Dec 2006 Location: Chicago Posts: 576 iTrader: 0 reviews	you probly have the firing order wrong

November 12th, 2007, 08:43 PM	#7
lineumup88 Ask All My Baby's Mommas Join Date: Jan 2007 Location: hampton va Posts: 276 iTrader: 3 reviews	i think its the timing. try to bump it up a bit. my car loves 14 degrees. good luck __________________ hey chevy boy.....i got something for you to POWERSTROKE! Warning: surgeon general says its ok to smoke ricers!

November 12th, 2007, 08:57 PM	#8
1slo5.0 I Post Entirely Way Too Much 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,367 iTrader: 1 reviews	Does it just do it when the engine is cold? What is the timing set at? __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

November 12th, 2007, 09:27 PM	#9
ridebmxfbm Regular 1988 Mustang GT Vert Join Date: Feb 2007 Location: Colonia, NJ Posts: 401 iTrader: 0 reviews	I also have the same problem, but mine only does it when the engine is cold.. is that normal? I gave the car a complete tune up, wires, rotor, cap, plugs, fuel filter, etc.. and it still does it

November 12th, 2007, 10:01 PM	#10
lineumup88 Ask All My Baby's Mommas Join Date: Jan 2007 Location: hampton va Posts: 276 iTrader: 3 reviews	mine only did it when it was cold but when i set it at 14 degrees, it ironed its self out __________________ hey chevy boy.....i got something for you to POWERSTROKE! Warning: surgeon general says its ok to smoke ricers!

November 12th, 2007, 10:17 PM	#11
ridebmxfbm Regular 1988 Mustang GT Vert Join Date: Feb 2007 Location: Colonia, NJ Posts: 401 iTrader: 0 reviews	mine does it when it's cold now and sometimes when its cold the rpm goes down about 4 mins in the warm it goes down likes its about to stall then up its nothing like the idle surge though I had that before...

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