Author Topic: 5.0 runs rich...  (Read 5406 times)

93LXCONV

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  • Mustang: 1993 LX CONVERTIBLE
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5.0 runs rich...
« on: July 23, 2009, 07:34:03 AM »
my 93 mustang 5.0 is failing emissions it is running on the rich side. motor is stock some bolt ons headers ..cold air ..stock mass air..motor is in great running condition runs great..but runs rich.. injectors are new ...19lb any help?

zebo87

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  • Daily driver: 87 gt
  • Location: virginia
Re: 5.0 runs rich...
« Reply #1 on: July 23, 2009, 12:49:54 PM »
do you have cats. if not then thats your prob. also have you ran any codes and if so what codes if any do you get. could be bad o2 sensors.

Soaring

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  • 1965 Mustang coupe 289, '03 Mach1, 03 Lariat
  • Mustang: 1965 coupe 289, and 2003 Mach1
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Re: 5.0 runs rich...
« Reply #2 on: July 23, 2009, 03:33:00 PM »
Bad 02 sensors would be my guess too.  Run the codes...If it's not the sensors, clean your MAF. 

93LXCONV

  • Jr. Member
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  • Posts: 15
  • Mustang: 1993 LX CONVERTIBLE
  • Location: BALTIMORE MD
Re: 5.0 runs rich...
« Reply #3 on: July 23, 2009, 07:17:42 PM »
thanks ...cats are on the car....I will check the O2 sensors..at this time I do not have a code reader..who sells these... most stores sell readers starting at 1996 year...

Soaring

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  • Mustang: 1965 coupe 289, and 2003 Mach1
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Re: 5.0 runs rich...
« Reply #4 on: July 23, 2009, 07:41:09 PM »
Research the Equus readers, but possibly the 3145 will suit your needs.
http://www.amazon.com/Equus-3145-Ford-Digital-Reader/dp/B000EW0KHW

93LXCONV

  • Jr. Member
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  • Posts: 15
  • Mustang: 1993 LX CONVERTIBLE
  • Location: BALTIMORE MD
Re: 5.0 runs rich...
« Reply #5 on: July 24, 2009, 07:12:14 AM »
thanks again for your help..that is an affordable reader..

Jaime_302

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Re: 5.0 runs rich...
« Reply #6 on: July 26, 2009, 12:59:51 PM »
if the car hasnt been driven in a long time then that may be your problem.. and i agree it might be your o2 or no cats

 

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