Pos and Neg V spikes in Data what do you think?

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Posted to Technical Discussion Forum on 5/9/2012 2 Replies

Any thoughts on what I am seeing the here? [1996 Ford F-250 XL, ECM/Inputs/Outputs Scan Data]

I have verified this with a scope. The VREF will actually spike up to 21V and TPS has spiked as high as 16.2V.

I am puzzled how the O2 can go negative 5.9V, btw i... Login to read more.

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Vehicle Data

1996 Ford F-250 XL 5.8L

VIN	1FTHF25H4T
Engine	5.8 L
Trans	4-speed Automatic (Electronic)

Vehicle Data

1996 Ford F-250 XL 5.8L

VIN	1FTHF25H4T
Engine	5.8 L
Trans	4-speed Automatic (Electronic)

2 Replies Received (View Replies)

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Vehicle Data

1996 Ford F-250 XL 5.8L

Vehicle Data

1996 Ford F-250 XL 5.8L