Mighty Max Help.....

PapaBear · 02-27-2013, 10:18 PM

Well, the ole gal finally gave up the ghost, about 400 miles after she turned 325k miles old......and I need some help.

I drove it to work yesterday, and all was fine. When i left to go to school, it was running a little weird, a little low on power. Got to Moncks Corner, and it was a little more sluggish. When I left school, it was worse. It was super slow, and would bog down if I floored it. It was running fine, other than the sluggishness, no noises or skipping or anything weird other than low on power. I also noticed that it was burning gas WAY more than normal.

Got to 526 and it got really bad, but I had to get home. Wife and baby home sleeping, and I had to work at 5AM so I pressed on thinking it was a bad catalytic converter (seen this before). I made it to Duncan's boat harbor bridge and I had to pull over. It wouldn't go over 50 MPH and didn't want to go up the hill. I unbolted the cat on the side of 526 and it was the same so i got a ride home.

Read on a forum about there being a cat INSIDE the exhaust manifold taht would cause this, so I went back to the truck today and pulled the manifold and gutted it. Put back together and same deal.

It will idle really low, but when given gas it just gets worse, and won't rev up. So I had it towed home. Changed the fuel filter and same deal.

I have changed plugs/wires/cap/rotor, cleaned MAF, fuel filter, air filter, gutted cats, all to no avail.

Any advice? Where to start? Thanks

WWhittle · 02-27-2013, 10:32 PM

Injector

WWhittle · 02-27-2013, 10:36 PM

Or bad gas?

WTFWSAT · 02-27-2013, 10:37 PM

Fuel pump

1997b4c · 02-27-2013, 10:42 PM

does the engine sound normal when spinning over or does it drag. it sounds like you have a fuel problem with the gradual loss of power unless the motor is slowly locking down....

BAD BOB · 02-27-2013, 10:42 PM

FP or MAF bad

PapaBear · 02-27-2013, 10:53 PM

Quote:

Originally Posted by WTFWSAT

Fuel pump

See below

Quote:

Originally Posted by 1997b4c

does the engine sound normal when spinning over or does it drag. it sounds like you have a fuel problem with the gradual loss of power unless the motor is slowly locking down....

Sounds fine, and has since this started

Quote:

Originally Posted by BAD BOB

FP or MAF bad

I'm gonna play devil's advocate and stupid at the same time with the fuel issues. If it was filter or pump, it would be starving for fuel, correct? It has been doing the opposite. I burned 6+ gallons of gas from North Chuck to monkey corner and back, at least twice what it usually does. Can you explain to me how it would use MORE gas if it was a fuel issue? I'm really stumped on this one.

I cleaned the MAF to no avail.
Is there a way I can test it? Unplug it and it doesn't change either.
Not to mention a reman MAF is $169 from rockauto.....wtf?

O2 sensor...would it do this?

Thanks again guys, I'm stumped at this point.....

BigdaddyDupree · 02-27-2013, 11:05 PM

i cant see it being the o2 sensor.

03SVTCOBRA · 02-27-2013, 11:06 PM

Or maybe it has a stuck injector and is flooding the motor so it has no power.

BigdaddyDupree · 02-27-2013, 11:07 PM

id almost bet on there being something wrong.

PapaBear · 02-27-2013, 11:07 PM

Quote:

Originally Posted by 03SVTCOBRA

Or maybe it has a stuck injector and is flooding the motor so it has no power.

Any way to check this??

PapaBear · 02-27-2013, 11:08 PM

Quote:

Originally Posted by BigdaddyDupree

id almost bet on there being something wrong.

Lol ya don't say!!

slowgreen99 · 02-27-2013, 11:09 PM

If it has too much fuel, there is a simple solution. Inductionsolutions.com, and get yourself a dry setup. I bet itd get up that damn bridge...at least once.

BigdaddyDupree · 02-27-2013, 11:10 PM

ive heard boiling injectors will fix them but id try it as a temp fix. if they are easy to pull google how to do it and try it. worse case scenario it dont fix it

Whaler · 02-27-2013, 11:11 PM

Quote:

Originally Posted by BigdaddyDupree

id almost bet on there being something wrong.

Private Gump, you're a freaking genius.

DIGGLER · 02-27-2013, 11:14 PM

siphon some of the gas out so there wont be as much

PapaBear · 02-27-2013, 11:15 PM

Quote:

Originally Posted by BigdaddyDupree

ive heard boiling injectors will fix them but id try it as a temp fix. if they are easy to pull google how to do it and try it. worse case scenario it dont fix it

That's weird, never heard that. Here's a thread

http://m.ls1tech.com/forums/showthread.php?t=1235851

ForceFed4g63 · 02-27-2013, 11:18 PM

Sounds like a maf or maybe even tps issue.

PapaBear · 02-28-2013, 12:14 AM

Quote:

Originally Posted by ForceFed4g63

Sounds like a maf or maybe even tps issue.

It definitely recognizes throttle changes, but something is keeping it from responding to them.

Mr. Camaro · 02-28-2013, 01:18 AM

Check fuel pressure and make sure the fuel doesn't have air or air bubbles like if a fuel rubber fuel line is cut in the tank. It might need a pcm also

02-27-2013, 10:18 PM	#1
PapaBear Senior Member Join Date: Aug 2010 Posts: 2,809	Mighty Max Help..... Well, the ole gal finally gave up the ghost, about 400 miles after she turned 325k miles old......and I need some help. I drove it to work yesterday, and all was fine. When i left to go to school, it was running a little weird, a little low on power. Got to Moncks Corner, and it was a little more sluggish. When I left school, it was worse. It was super slow, and would bog down if I floored it. It was running fine, other than the sluggishness, no noises or skipping or anything weird other than low on power. I also noticed that it was burning gas WAY more than normal. Got to 526 and it got really bad, but I had to get home. Wife and baby home sleeping, and I had to work at 5AM so I pressed on thinking it was a bad catalytic converter (seen this before). I made it to Duncan's boat harbor bridge and I had to pull over. It wouldn't go over 50 MPH and didn't want to go up the hill. I unbolted the cat on the side of 526 and it was the same so i got a ride home. Read on a forum about there being a cat INSIDE the exhaust manifold taht would cause this, so I went back to the truck today and pulled the manifold and gutted it. Put back together and same deal. It will idle really low, but when given gas it just gets worse, and won't rev up. So I had it towed home. Changed the fuel filter and same deal. I have changed plugs/wires/cap/rotor, cleaned MAF, fuel filter, air filter, gutted cats, all to no avail. Any advice? Where to start? Thanks

02-27-2013, 10:37 PM	#4
WTFWSAT Senior Member Join Date: Nov 2007 Location: Summerville Posts: 861	Fuel pump __________________ Fastest stock computer 5.0 on the planet! Looking for cheeep msd 6al! PM me! 88 Coupe (turtle) 03 Cobra (tortoise)

02-27-2013, 10:42 PM	#6
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	FP or MAF bad __________________ IM BAD BOB

02-27-2013, 11:05 PM	#8
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	i cant see it being the o2 sensor. __________________ . What you wanna do?

02-27-2013, 11:06 PM	#9
03SVTCOBRA Senior Member Join Date: Jul 2011 Posts: 2,041	Or maybe it has a stuck injector and is flooding the motor so it has no power. __________________ [SIGPIC][/SIGPIC]

02-27-2013, 10:32 PM	#2
WWhittle Senior Member Join Date: Apr 2008 Location: Mt. Pleasant, SC Posts: 3,899	Injector

02-27-2013, 10:36 PM	#3
WWhittle Senior Member Join Date: Apr 2008 Location: Mt. Pleasant, SC Posts: 3,899	Or bad gas?

02-27-2013, 10:42 PM	#5
1997b4c Senior Member Join Date: Jul 2011 Posts: 343	does the engine sound normal when spinning over or does it drag. it sounds like you have a fuel problem with the gradual loss of power unless the motor is slowly locking down....

02-27-2013, 11:07 PM	#10
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	id almost bet on there being something wrong. __________________ . What you wanna do?

02-27-2013, 11:09 PM	#13
slowgreen99 Senior Member Join Date: Jan 2008 Location: Summerville Posts: 7,740	If it has too much fuel, there is a simple solution. Inductionsolutions.com, and get yourself a dry setup. I bet itd get up that damn bridge...at least once. __________________ M.R.E. Bad Bob Motorsports

02-27-2013, 11:10 PM	#14
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	ive heard boiling injectors will fix them but id try it as a temp fix. if they are easy to pull google how to do it and try it. worse case scenario it dont fix it __________________ . What you wanna do?

02-27-2013, 11:14 PM	#16
DIGGLER Senior Member Join Date: Aug 2012 Posts: 1,458	siphon some of the gas out so there wont be as much

02-27-2013, 11:18 PM	#18
ForceFed4g63 Senior Member Join Date: Oct 2009 Location: Aiken Posts: 7,002	Sounds like a maf or maybe even tps issue. __________________ 2000 WS6 2005 CTS-V 2004 Titan QC 4x4

02-28-2013, 01:18 AM	#20
Mr. Camaro Senior Member Join Date: Aug 2009 Location: James Island Posts: 451	Check fuel pressure and make sure the fuel doesn't have air or air bubbles like if a fuel rubber fuel line is cut in the tank. It might need a pcm also __________________ 91 Camaro RS 05 gmc 2500 diesel 05 Mercedes e55 amg SHAWNBOYMOODY retired my car on Sunday 6-3-12