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1994 Buick Lesabre Repair Question


Topics covered: Terminal, Body, Engine.
Mileage: 140,000 miles.

Asked on February 7, 2013

Buick Lesabre Terminal Problem

Jump 5 to 6 on diagnostic connector no flashes any suggestions
Avatar Asked by steve @44

Answer

Replied on February 7, 2013

If that is a 16 pin datalink connector, a jumper wire won't work. At the least, you need an obd2 code reader, plugs into the datalink connector. Your local autostore should sell an obd2 code reader. Some national brand autostores will check codes for free.

Tiny Answered by JDL (expert)
14,401 answers provided
Replied on February 7, 2013

it is a 16 pin Ben to autozone and 2 other auto parts stores all scans come up no data connection

Tiny Response from steve @44
2 questions asked
Replied on February 7, 2013

Pin 16 should be voltage, any voltage on that pin? If no voltage, the datalink connector wont work.

Are you having any driveability issues with vehicle?

Tiny Answered by JDL (expert)
14,401 answers provided

Replied on February 7, 2013

yes the idols is up to 2500 rpm does at start up if I pull connectionconnection to IAc Idol drops down

Tiny Response from steve @44
2 questions asked
Replied on February 8, 2013

Did you clean the throttle-body and idle air control? What about pin 16 on the datalink connector, use a testlite, any voltage?

Tiny Answered by JDL (expert)
14,401 answers provided
Replied on February 8, 2013

Just to add, You can check resistance across A & B terminals, then C & D terminals, 40--80 ohms. If not as specified replace iac.

Check resistance between B & C, then A & D terminals, infinite resistance, If not replace iac.

It sounds to me like the iac is working correctly. With engine idling, block off the mouth of throttle-body, does it kill the engine?

Tiny Answered by JDL (expert)
14,401 answers provided

Replied on February 10, 2013

These take a unique scanner/software to read. They are partially OBD1 & OBD2, oddballs.

What problem are you having?

Tiny Answered by jesse777
1 question asked