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How can we find the trouble codes on this it does not have a port to plug the scanner into.

Tiny
KSCOX54
  • MEMBER
  • 1995 LEXUS SC 300
  • 235,000 MILES
Car runs great for about 5 minutes then it starts running horribly no power.
Sunday, January 1st, 2012 AT 8:21 PM

3 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Did your check engine light come on while its running?Is it a lack of power or is missfiring real bad?
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Sunday, January 1st, 2012 AT 8:23 PM
Tiny
KSCOX54
  • MEMBER
  • 2 POSTS
Yes the engine light is on. It is lack of power. This is what we have for a code 25 26 71 78 on the motor side and 62 on transmission side.
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Sunday, January 1st, 2012 AT 9:24 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I would start with the code 78 fuel pump control circuit. Get a fuel pressure gauge lets see what the fuel pressure is with the engine running and shut off. Code 25 is lean air fuel mixture code 26 is rich air fuel mixture code 78 fuel pump control circuit.
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Sunday, January 1st, 2012 AT 10:58 PM

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