92 V-6 4Runner

[drive-ability]

Hey guys and gals my baby sister has a 92 4Runner and it has some trouble codes turning on the check engine light. She needs to get it smogged here in Ca. The shop she took it to can't seem to solve the problem. The codes are # 1, #4, and #7. I guess #1 is a normal condition. The others seem to be straight forward but there must be something else going on with the system. :bash:
Does anyone have a Fuel and Emission wiring diagram I can check out?

 

[Gh0st]

according to my code book

#1 is: System normal

#4 is: ECT sensor circuit

#7 is: TPS circuit

Hope that helps

 

[drive-ability]

according to my code book

#1 is: System normal

#4 is: ECT sensor circuit

#7 is: TPS circuit

Hope that helps

Gh0st,
Yes, I am glad to here you have the same code description as I've found. It looks like there may be a wiring issue, so it would be nice to have the use of a wiring diagram. Colors and computer pin locations are helpful. This is a great truck and has run great for years. John

 

[npostino]

http://www.off-road.com/toyota/tech/codes/index.html

This may be helpful for future reference.