Engine '91 5.0 dies when turning on Innova code reader in Key on Engine Running mode

Y

YVR_FOX5.0VERT

Member

Apr 26, 2023

5

8

13

Apr 26, 2023

#1

• Apr 26, 2023

• #1

So i just picked up the innova OBD1 code reader.

When I try to scan in Key on Engine Off mode, it will cycle the fuel pump and then start reading codes.

With the car running, when I attempt to start the scan, it kills the motor.

Am I missing something here?

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,231

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Massachusetts

Apr 27, 2023

#2

• Apr 27, 2023

• #2

Can you try it with a simple jumper wire in the test port to initiate the code reading process just to see if it does the same thing?

 

Y

YVR_FOX5.0VERT

Member

Apr 26, 2023

5

8

13

Apr 27, 2023

#3

• Apr 27, 2023

• #3

Mustang5L5 said:

Can you try it with a simple jumper wire in the test port to initiate the code reading process just to see if it does the same thing?

Click to expand...

I just read a write up on LMR. When using the jumper method it needs to be installed first prior to starting the engine. With the scan tool i attempted to run the scan with it already running. Maybe I need to initiate test first then start the car.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,231

17,918

224

Massachusetts

Apr 28, 2023

#4

• Apr 28, 2023

• #4

YVR_FOX5.0VERT said:

I just read a write up on LMR. When using the jumper method it needs to be installed first prior to starting the engine. With the scan tool i attempted to run the scan with it already running. Maybe I need to initiate test first then start the car.

Click to expand...

I use an Innova 3145 to pull my codes. I can initiate the test with the car running and it pulls the codes fine.