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94 GT Lean Condition CEL's

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Old 06-24-2008, 09:08 AM
  #1  
davidgt97
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Default 94 GT Lean Condition CEL's

I just bought a 94 Gt which is now getting a CEL. I had it checked at a local parts store and got three codes. I don't remember the codes for the first 2 (I think they were 181 and 189), but I do know they were lean condition on fuel banks 1 and 2. The other was 556 which is some type of intermittent fuel pump issue. I'm guessing it's the pump but am not sure. I hooked a fuel pressure guage up and at idle w/ the vac line on it read 32psi. W/ the line off it read 40. The haynes manual say 30 - 45 line on and 40 - 50 line off but this seems like a wide spectrum that I seem to be on the low side of. I also tried pinching the return line like the manual says to see if the prerssure goes up but I'm not sure if I got it closed off good and don't really like doing this and taking a chance on hurting the line. Anyone had this before?
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Old 06-25-2008, 10:36 PM
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davidgt97
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Default RE: 94 GT Lean Condition CEL's

I can't believe no one has had this before. Well I plan on throwing some money under the hood on down the road anyway so I guess I'll pick a high vol. fuel pump and adj. reg. and see if that doesn't take care of it.
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Old 06-25-2008, 10:37 PM
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davidgt97
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Default RE: 94 GT Lean Condition CEL's

I can't believe no one has had this before. Well I plan on throwing some money under the hood on down the road anyway so I guess I'll pick a high vol. fuel pump and adj. reg. and see if that doesn't take care of it.
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