Hesitation and popping in exhaust

H

huesmann

Founding Member

Jun 21, 2002

332

0

16

Aug 30, 2004

#1

• Aug 30, 2004

• #1

I have a '98 GT, stock aside from a cat-back. I'm getting this engine hesitation and these popping noises in the exhaust under acceleration, mostly when I'm under about 1500 rpm, any gear. It happens less frequently when I'm accelerating gently, and happens often when I floor it. But when it gets over 1500-1700 rpm or so, the problem goes away. The MIL light doesn't come on at all. Any ideas?

 

J

jc315

New Member

Jul 1, 2004

21

0

0

Fayetteville, NC

Aug 30, 2004

#2

• Aug 30, 2004

• #2

I'm wondering the same thing mine does it at the same rpm's. Its fine all the way through until I hit those same ranges as yours. Hopefully someone has had this problem and fixed it.

 

9

98laseredgt

New Member

Jul 16, 2004

122

0

0

indianapolis

Aug 31, 2004

#3

• Aug 31, 2004

• #3

mine does it too. i changed the plugs and the wires are newer, changed the air filter, pcv valve, and started using premium gas, but its still there. i cant figure it out. anyone know what it is?

 

H

huesmann

Founding Member

Jun 21, 2002

332

0

16

Aug 31, 2004

#4

• Aug 31, 2004

• #4

You're not throwing codes either, are you?

Might it be the fuel filter?

 

9

98laseredgt

New Member

Jul 16, 2004

122

0

0

indianapolis

Aug 31, 2004

#5

• Aug 31, 2004

• #5

my car is throwing a code for the mils. i have an O/R H and no eliminators. im going to go to autozone now and see if they can pull it and maybe there is something else that its throwing, but i cant see because the light is already on all the time. im going to change the fuel filter later ill let you guys know if it helps.

 

H

huesmann

Founding Member

Jun 21, 2002

332

0

16

Aug 31, 2004

#6

• Aug 31, 2004

• #6

^

 

G

Grady96GT

New Member

May 30, 2004

45

0

0

Texas

Aug 31, 2004

#7

• Aug 31, 2004

• #7

Fuel Pump
85 bucks at autozone
In tank=PITA

 

J

jc315

New Member

Jul 1, 2004

21

0

0

Fayetteville, NC

Aug 31, 2004

#8

• Aug 31, 2004

• #8

so you guys think its a fuel pump issue? I have an 03 with only 10k on it and just the basic bolt on's headers,plenum,chip,o/r H I shouldn't be pushing the pump that hard should I?

 

J

jc315

New Member

Jul 1, 2004

21

0

0

Fayetteville, NC

Sep 2, 2004

#9

• Sep 2, 2004

• #9

tt

 

9

98laseredgt

New Member

Jul 16, 2004

122

0

0

indianapolis

Sep 2, 2004

#10

• Sep 2, 2004

• #10

my codes were for the downstream O2's. nothing else. havent changed the filter yet. if that doesent help i guess ill have to look into the pump.

 

H

huesmann

Founding Member

Jun 21, 2002

332

0

16

Sep 3, 2004

#11

• Sep 3, 2004

• #11

laser, did you have the MILs on constantly?