I need some help

Royc2348 · 06-10-2009, 04:18 PM

I"m new to the forum. I have a 01 2 door blazer 4.3 G80 3.42 rear. I have a K&N FIPK usually run a hypertech power programmer. I have Flowmaster muffler and 2.5" pipe. I have underdrive pulleys also. Lowered 3" front and back. I replaced the plugs, wires, cap, rotor button, serviced the tranny, and the intake gasket were all replaced very recently. My problem is it is missing during acceleration and at highway speed. My exhaust does pop when I rev it a little possibly the cat? My air filter is clean just cleaned it. Oh its got 89xxx miles on the ticker. The strangest thing of all is there is no service engine light on.

AWD V8 · 06-10-2009, 04:29 PM

Hi

It could be the cat, had lots of those go on me.

Remove the O2 sensor from in front of the cat and take it for a short drive. If it has more power then the cats plugged.

Royc2348 · 06-10-2009, 04:30 PM

I ll try that but there isnt a noticeable loss of power. It still runs strong.

Royc2348 · 06-10-2009, 06:51 PM

That didn't work. I also need to mention that it is kind of hard to start it. If I bump the key and let the engine turn over, let off then start it it fires right up.

06-10-2009, 04:18 PM	#1
Royc2348 Registered User Age: 29 Join Date: Jun 2009 Posts: 12 Location: User is: OffLine	I need some help I"m new to the forum. I have a 01 2 door blazer 4.3 G80 3.42 rear. I have a K&N FIPK usually run a hypertech power programmer. I have Flowmaster muffler and 2.5" pipe. I have underdrive pulleys also. Lowered 3" front and back. I replaced the plugs, wires, cap, rotor button, serviced the tranny, and the intake gasket were all replaced very recently. My problem is it is missing during acceleration and at highway speed. My exhaust does pop when I rev it a little possibly the cat? My air filter is clean just cleaned it. Oh its got 89xxx miles on the ticker. The strangest thing of all is there is no service engine light on.
	[Reply w/Quote]

06-10-2009, 04:29 PM	#2
AWD V8 Registered User Age: 56 Join Date: Jan 2009 Posts: 384 Location: Vancouver, BC User is: OffLine	Re: I need some help Hi It could be the cat, had lots of those go on me. Remove the O2 sensor from in front of the cat and take it for a short drive. If it has more power then the cats plugged.
	[Reply w/Quote]

06-10-2009, 04:30 PM	#3
Royc2348 Registered User Age: 29 Join Date: Jun 2009 Posts: 12 Location: User is: OffLine	Re: I need some help I ll try that but there isnt a noticeable loss of power. It still runs strong.
	[Reply w/Quote]

06-10-2009, 06:51 PM	#4
Royc2348 Registered User Age: 29 Join Date: Jun 2009 Posts: 12 Location: User is: OffLine	Re: I need some help That didn't work. I also need to mention that it is kind of hard to start it. If I bump the key and let the engine turn over, let off then start it it fires right up.
	[Reply w/Quote]