P0320 code

[MedicMoe]

I've noticed that the truck will have a miss now and then, maybe about a dozen in the past 3 days. Today it threw a code of P0320. I cleared it, but what should I check for

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[Bedrck47]

DTC
P0320 - Ignition Engine Speed Input Circuit Malfunction

Description
The ignition engine speed sensor input signal to PCM is continuously monitored. The test fails when the signal indicates that two successive erratic profile ignition pickup (PIP) pulses have occurred.

Possible Causes
Loose wires/connectors.
Arcing secondary ignition components (coil, wires and plugs)
On board transmitter (2-way radio)

Diagnostic Aides
The DTC indicates that two successive erratic PIP pulses occurred

 

[MedicMoe]

thank you very much for the quick reply Bedrck! I'll check for loose wires, and take out the 2-way radio to see if that changes anything. I did see a video on youtube but it was for a 04 expy, but engine bays looked a little similar. i'll start looking at the wire he found to be bad.

 

[Bedrck47]

When was the last time Plugs, coils and boots were replaced?

 

[MedicMoe]

I bought the truck 6 years ago with 110K miles. It has almost 180K. So I want to say never. Most of it's life with me has been just daily in town driving. Just recently I started driving it long distances 200 miles one way. I've replaced suspension parts, and regular oil changes.

 

[DUNE RCR]

Sounds like it's very well time for a tune up. Get yourself some new plugs and boots and don't forget to use dielectric grease on the connections.

 

[MedicMoe]

Yeah. I'm thinking that too. It's on the list to do, I think it just got bumped up towards the top now.

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[k9education]

I would do the plugs, but I would only do the boots if they show visible signs of wear. The boots don't necessarily ever need to be replaced.

 

[MedicMoe]

Sounds good, time to get the plugs and a 12 pack, maybe a buddy. And a ton of extensions and wobbles!

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[MedicMoe]

Anyone in Vegas, who wants to come by, turn some wrenches and drink a few beers?

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