If my truck does not have a carburetor, does it still need a throttle position sensor?

VANESSA GRIFFITH

MEMBER
1989 NISSAN HARDBODY
4WD
MANUAL
245,000 MILES

Also, the truck sometimes spits and sputters really badly like it’s going to run out of gas or something. I was kind of thinking maybe there was air getting in the fuel line. But I replaced the fuel filter but that didn’t help so that’s when I started thinking maybe it was air? But I’m probably incorrect.

Sunday, January 21st, 2024 AT 11:25 AM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
54,142 POSTS

Yes, your truck has and needs a throttle position sensor. Have you installed new spark plugs, wires and cap and rotor? I would start there and let's run the codes to see if any are stored. Here is a guide to help you with it:

https://www.2carpros.com/articles/nissan-obd1-diagnostic-trouble-codes-and-retrieval-procedure-1984-to-1994

If the TPS is bad it will cause the problem, you are describing

Spark plug Gap .................... 0.8 - 0.9 mm (0.031 - 0.035 in)

This guide can help walk you through the repair:

https://www.2carpros.com/articles/how-to-change-spark-plugs

Check out the images (below). Please upload pictures or videos in your response of the problem so we can see what's going on.

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