CAR NOT READING ON DIAGNOSTIC

1993 Lexus SC 400

Tiny

johnsikorski

October, 1, 2012 AT 7:16 PM

I Have a 1993 Lexus SC400. I bought a diagnostic tester Innova 1203 CANOBDI and I cannot get this car to read. It just comes back no data. I bought a test light and it has power going to the connections. The car runs for awhile then when it heats up it just goes blog. The RPMS go with my foot off the gas when it is idiling. The car runs rough, like it wants to die. I have to keep my foot on the gas peddle to keep it running. I changed out my fuel filter 2 times and the fuel pump. I just do not understand why the computer won't read on the diagnostic? Can you help?

FOUND 25383 RELATED QUESTIONS

Cj Stalling When Idling

33 ANSWERS
44 IMAGES

Stalling Out

43 ANSWERS
48 IMAGES

8 Answers

Tiny

saturntech9

October, 1, 2012 AT 7:32 PM

Those aftermarket scan tools dont always work on the cars they say they will especially the diyer ones been there done that. The earlier imports reading codes with scan tools gets dicey.I posted how to retrive the codes by flashing the codes out let me know how that works. Also what codes you have.

Tiny

johnsikorski

October, 1, 2012 AT 7:44 PM

Thank you will let you know!

Tiny

saturntech9

October, 1, 2012 AT 8:27 PM

Let me know what codes you come up with.

Tiny

johnsikorski

October, 1, 2012 AT 8:33 PM

Can you tell me how do I know when the throttle valve is closed? Also can you send me a diagram of where the trottle body is located on this car 1993 Lexus SC400?

Tiny

saturntech9

October, 1, 2012 AT 8:37 PM

With your foot off the gas pedal the throttle body should be at the opposite end of your air box.

Tiny

johnsikorski

October, 1, 2012 AT 8:55 PM

So what does that mean? How do I know if it is closed?

Tiny

KHLow2008

October, 1, 2012 AT 9:27 PM

Remove the air cleaner hose to check.

Tiny

johnsikorski

October, 1, 2012 AT 9:28 PM

Thank you. I will let you know what I find.

Please login or register to post a reply.

 Step by Step video GMC Yukon XL 2000-2006
Code Read Retrieval/Clear - Dodge Stratus
Code Read Retrieval/Clear Mercedes-Benz C230
Code Read Retrieval/Clear Scion XD
Code Read Retrieval/Clear Chevrolet Camaro
Code Read Retrieval/Clear Honda Civic