TRUCK PROBLEM...need advice

animal · 05-03-2005, 07:53 PM

Hey guys i have a 2000 gmc Z71 and ive been having a problem that has stumped myself...as well as my mechanic. It recently started to studer a little bit when accelerating in the low end. As soon as a step on the pedal hard though it jumps out of studering and does fine but when it goes down to a low speed it studers again. After this though the check engine light keeps coming up after it does this. It only does that like 3 times a week...the rest of the time it runs super smooth. My mechanic has checked it out and cant figure out whats wrong everything on the engine is good.... he said it might be the catylitic converter cause a oxogen reading on the computer. I do have a high performance chip on this truck... but it has never done this before...maybe i need some more air flow or something ??? ANYONE KNOW WHAT MIGHT BE WRONG ????

thanks for any input

animal

Jackie · 05-04-2005, 10:25 AM

Check the cat. By b/f's camaro did the same thing, and his cat was all clogged up. All he needed was a new one, simple as that. Good luck

bigmudr · 05-04-2005, 10:10 PM

first, its not your cat. a plugged cat will kill the engine when you get to higher rmp's. it will not level out and it will be a consistent problem, not just 3 times a week. a bad cat could cause it to lean out, but that will be consistent also. if the check engine light is coming on, your mechanic should pull the trouble code. if he doesnt have a scanner, find one that does. it will lead you better than any bad cat b.s. you might hear. and apparently not everything is fine on your engine or you wouldnt have a problem.

Ford4x4Chik27 · 05-05-2005, 01:18 AM

I'm gonna recommend checking your fuel filter/lines and injectors. I have had that problem in several of my vehicles and it's been either fuel filter or clogged injectors. Sometimes it will blow through and sometimes it won't. Running the codes is a great idea too. Good luck!!

05-03-2005, 07:53 PM	#1
animal Junior Member Join Date: May 2005 Posts: 1	TRUCK PROBLEM...need advice Hey guys i have a 2000 gmc Z71 and ive been having a problem that has stumped myself...as well as my mechanic. It recently started to studer a little bit when accelerating in the low end. As soon as a step on the pedal hard though it jumps out of studering and does fine but when it goes down to a low speed it studers again. After this though the check engine light keeps coming up after it does this. It only does that like 3 times a week...the rest of the time it runs super smooth. My mechanic has checked it out and cant figure out whats wrong everything on the engine is good.... he said it might be the catylitic converter cause a oxogen reading on the computer. I do have a high performance chip on this truck... but it has never done this before...maybe i need some more air flow or something ??? ANYONE KNOW WHAT MIGHT BE WRONG ???? thanks for any input animal

05-04-2005, 10:25 AM	#2
Jackie Junior Member Join Date: Feb 2005 Location: PA Posts: 8	Check the cat. By b/f's camaro did the same thing, and his cat was all clogged up. All he needed was a new one, simple as that. Good luck __________________ Truck for sale: 1997 F150, 46,000 miles, 6 foot bed, V8, extended cab, 3 door, Dynaflow exhaust, 2000 lb payload suspension added, custom running boards, very sharp looking truck.

05-05-2005, 01:18 AM	#4
Ford4x4Chik27 Senior Member Join Date: Sep 2004 Location: Sac-Town, Cali Posts: 1,585	I'm gonna recommend checking your fuel filter/lines and injectors. I have had that problem in several of my vehicles and it's been either fuel filter or clogged injectors. Sometimes it will blow through and sometimes it won't. Running the codes is a great idea too. Good luck!! __________________ '93 Isuzu Amigo, Toyota Axles/Tcase/Drivelines, 35" MTR's '01 Pathfinder, making a huge effort to keep it stock, since it's my DD

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Help a Student..Take a Truck Survey	ClassSurvey	General Truck Forum	2	12-08-2007 06:51 PM
Gas prices no problem for wood-burning truck (Tuscaloosa News)	trucknews	Truck News (headlines)	0	04-26-2005 05:30 PM
Need Truck Advice	top dun	General Truck Forum	32	03-12-2005 12:07 PM
buying a truck need advice	74chevy34	Chevy Truck Forum	1	01-22-2005 06:04 PM
Committees Set Out to Solve City Truck Problem (Fort Wayne News Channel 15)	trucknews	Truck News (headlines)	0	10-08-2004 09:30 AM

05-04-2005, 10:10 PM	#3
bigmudr Full Member Join Date: Jan 2005 Location: columbus, in Posts: 18	first, its not your cat. a plugged cat will kill the engine when you get to higher rmp's. it will not level out and it will be a consistent problem, not just 3 times a week. a bad cat could cause it to lean out, but that will be consistent also. if the check engine light is coming on, your mechanic should pull the trouble code. if he doesnt have a scanner, find one that does. it will lead you better than any bad cat b.s. you might hear. and apparently not everything is fine on your engine or you wouldnt have a problem.