slow rev

M

mnstanggt

New Member

Dec 7, 2009

31

0

0

mn

Jun 15, 2010

#1

• Jun 15, 2010

• #1

my car revs normal in park but lately in gear my rpms climb really slow even at wot, big power loss
fuel pressure good
no codes present
maf checked out good, cleaned also
cars not misfiring actually running really smooth
i dont have cats so isnt that
plz help moving soon have to have car ready for thousand mile trip

 

ronstang94

Member

May 10, 2007

204

1

18

Phx, AZ

Jun 15, 2010

#2

• Jun 15, 2010

• #2

check timing

 

M

mnstanggt

New Member

Dec 7, 2009

31

0

0

mn

Jun 15, 2010

#3

• Jun 15, 2010

• #3

ok ill check timing

forgot to add in my first post, mpg way down, i set my trip the other day when i filled up im at half tank, trip says 72 miles thats city and highway driving and not aggressively driving

 

ProKiller

Founding Member

Apr 26, 2002

3,064

15

78

PA

Jun 15, 2010

#4

• Jun 15, 2010

• #4

how old are the o2 sensors? check your engine grounds.

 

final5-0

Mustang Master

Apr 6, 2003

6,817

12

79

DFW Texas

Jun 15, 2010

#5

• Jun 15, 2010

• #5

Got an extra coil you could quickly swap out to test?

Grady

 

M

mnstanggt

New Member

Dec 7, 2009

31

0

0

mn

Jun 15, 2010

#6

• Jun 15, 2010

• #6

i checked timing dead on at 12 degrees
i tried another coil same symptoms
engine grounds brand new and all tight i double checked it anyways
o2 sensors not sure will probably order some anyways, unsure how old they are

this couldnt be tps taking a crap or something small like my pcv screen plugged could it?

when driving car feels like its really heavy like im pulling a trailer
had me thinking brakes were draggin but they checked out fine

 

9

94gt5.o

New Member

Dec 27, 2009

177

0

0

ferndale WA

Jun 18, 2010

#7

• Jun 18, 2010

• #7

Just thrown this out there but when i first bought my mustang it had the same problem i replaced the IAT sensor and then all my performence came back. Just a thought