Power-loss Above 3500rpms, Stalling, Backfiring, No Mil

ruger281

New Member

Jul 29, 2012

29

0

1

Raleigh, NC

Aug 7, 2012

#1

• Aug 7, 2012

• #1

I need help here please... powerloss above 3500rpms, idles to low in drive, stalls at stop lights periodically, wandering idle at times. no check engine light (just on because of rear o2 sensors, OR-H)

tried;
cleaning MAF
cleaning IAC
replaced TPS
replaced fuel pump
replaced fuel filter
visually inspected for vacuum leak

 

ruger281

New Member

Jul 29, 2012

29

0

1

Raleigh, NC

Aug 7, 2012

#2

• Aug 7, 2012

• #2

not sure how i posted this twice....please delete

 

trinity_gt

10 Year Member

Jan 31, 2003

3,125

81

99

Canada

Aug 7, 2012

#3

• Aug 7, 2012

• #3

Do a compression check on all 8 cylinders. If one bank is lower than the other you may have a timing chain/guide/tensioner issue.

 

ruger281

New Member

Jul 29, 2012

29

0

1

Raleigh, NC

Aug 7, 2012

#4

• Aug 7, 2012

• #4

ok, that makes sense...ill have to tackle that this weekend

 

ramman999

Member

Jan 3, 2011

52

0

6

Dallas, GA

Aug 9, 2012

#5

• Aug 9, 2012

• #5

how many miles on your car? I just went through hell chasing a problem similar only to find it was a misfire - changed out the coils and problem went away. my car had 72k on original coils - never threw a code for misfire

 

joshjwc9

Active Member

Jun 12, 2006

1,095

17

39

Palm Harbor, FL

Aug 9, 2012

#6

• Aug 9, 2012

• #6

ramman999 said:

how many miles on your car? I just went through hell chasing a problem similar only to find it was a misfire - changed out the coils and problem went away. my car had 72k on original coils - never threw a code for misfire

Click to expand...

Pull the coils and check the boots, there could be a hair crack in the rubber boot causing the spark to arc and a misfire after.

Had a strange p0352 issue in my car and all it was, was a bad boot...

 

ruger281

New Member

Jul 29, 2012

29

0

1

Raleigh, NC

Aug 9, 2012

#7

• Aug 9, 2012

• #7

ramman999 said:

how many miles on your car? I just went through hell chasing a problem similar only to find it was a misfire - changed out the coils and problem went away. my car had 72k on original coils - never threw a code for misfire

Click to expand...

i have 140k on her, just purchased it so i dont know the history....ill look into it. I used torque app tonight to monitor sensors and found out that bank 2 sensor 1 is reading waaaaayyyyyyyyyyyy rich...the higher the rpm the worse it gets...what does this mean?

 

Shiroelex

There's nothing worse than aut

Founding Member

Aug 23, 2001

728

1

27

Westland, MI

Aug 10, 2012

#8

• Aug 10, 2012

• #8

Mine read rich on one bank when I had a failing coil on that side. Try swapping your coils around and see if the richness code changes banks.

 

ruger281

New Member

Jul 29, 2012

29

0

1

Raleigh, NC

Aug 11, 2012

#9

• Aug 11, 2012

• #9

found a manifold to mid-pipe bolt that had backed out....took off mid-pipe, adjusted everything and tightened her up. Problem solved!!!!

 

00GTpony

Member

Mar 10, 2007

162

0

16

Aug 13, 2012

#10

• Aug 13, 2012

• #10

all becaue the manifold to mid pipe was loose u were looking power through exhaust leak?... i am loosing power uptop as well i will check that

 

ruger281

New Member

Jul 29, 2012

29

0

1

Raleigh, NC

Aug 14, 2012

#11

• Aug 14, 2012

• #11

yeah it solved my problems...my leak was pretty bad though, and i knew it was there but never thought it was related. If this is your problem, you would hear it...