help...runing super lean!

dTas95GT

Member

Jan 6, 2004

762

0

16

Woodinville, WA

Jun 28, 2004

#1

• Jun 28, 2004

• #1

took the mustang in for the first time for a dyno this weekend... what a dissapointment (205 hp, 260 tq). they could only run it once because the car was running super lean (not enough fuel for some reason).

so... put the car up on the lift, checked the fuel filter (new and working fine), checked the fuel pressure (40lbs, checked out fine). took a look at the MAS, clean and working well.

what's wrong!!! anyone have any suggestions. i haven't changed anything on the fuel system yet and i only run super. figure the injectors are clean (don't know for sure). the car runs well (aside for the 40hp loss due to running lean), no mis-fire or back-fire, no starting or shutting down problems. as far as i knew the car was running great. now this

suggestions!?!?

 

9

95cobra50

New Member

Feb 19, 2004

167

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0

Jun 28, 2004

#2

• Jun 28, 2004

• #2

my air temp sensor dropped me from 20/1 a/f to 13/1. I went from 180/235 to 235/279

 

dTas95GT

Member

Jan 6, 2004

762

0

16

Woodinville, WA

Jun 28, 2004

#3

• Jun 28, 2004

• #3

Air temp sensor? where/what's that?

20/1 !! whoa! i was only at 15/1.

 

9

95cobra50

New Member

Feb 19, 2004

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Jun 28, 2004

#4

• Jun 28, 2004

• #4

its next to your distributor on the left side. Unplug it and run your car. It made mine run better like that but its just a mini fix till you can replace it. btw not a pic of my engine. My digi cameria pics are too big to post but it will give you the idea

 

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GTPhreak

Founding Member

Mar 16, 2000

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Rowlett, TEXAS

Jun 28, 2004

#5

• Jun 28, 2004

• #5

I dont see 40 more hp from your list, where are you figuring that from?

 

9

95cobra50

New Member

Feb 19, 2004

167

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Jun 28, 2004

#6

• Jun 28, 2004

• #6

i got 55hp from 20/1 to 13/1 so i dont think you dropping a few a/f is going to boost you up 40hp. Id say 10-15 though.

 

dTas95GT

Member

Jan 6, 2004

762

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16

Woodinville, WA

Jun 28, 2004

#7

• Jun 28, 2004

• #7

there was another 95 GT there with the same mods as mine minus TB. he was pulling 232 hp so i figured the TB would give me a bit more than that. so at least a gain of 30 hp going from 15/1 to 13/1. i'm being optimistic and shooting for 40hp.

 

mytight95

Active Member

Apr 11, 2003

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Dothan,Al

Jun 28, 2004

#8

• Jun 28, 2004

• #8

teh pictures you guys are posting and describing is the engine coolant temp sensor, the Intake air temperature sensor is in the air intake tube


jason

 

dTas95GT

Member

Jan 6, 2004

762

0

16

Woodinville, WA

Jun 30, 2004

#9

• Jun 30, 2004

• #9

the sensors in the air intake tube were checked they looked clean.

any other suggestions? right now the only solution i have is a fuel pressure regulator.

 

G

greg@berkeley

Founding Member

Aug 30, 2002

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minnesota / university of california, berkeley

Jun 30, 2004

#10

• Jun 30, 2004

• #10

mytight95 said:

teh pictures you guys are posting and describing is the engine coolant temp sensor, the Intake air temperature sensor is in the air intake tube


jason

Click to expand...

the circled item in that pic is a coolant line.