1995 k1500 350 very rough idle

Lt1roady445 · May 27, 2020

My truck has a TB spacer, shorty headers. Should I get an adjustable fuel regulator if that happens to be it? Getting another gauge today.

PlayingWithTBI · May 27, 2020

Lt1roady445 said:
Getting another gauge today.

Good start, then get a scanner.

Schurkey · May 27, 2020

Lt1roady445 said:
No scanner available.

That needs to change.

Lt1roady445 said:
Does the paper clip and reference to book work? Accurate info? Somewhat at least?

It "works". It does not give you access to the data stream. It gives you access to "codes"; and it gives you access to open/closed loop status, and rich/lean status. (I haven't tried that in decades; and I only half-remember the process.)

Which is to say that you're MISSING access to a huge amount of information. The "paper clip" is better than nothing, but not a lot better.

Get a real scan tool.

Greasemagnet · May 27, 2020

Gramps said:
With the exception that your truck is a vortec 96+ WITH the spider injectors, and the op is NOT. He has a 95 - tbi injected. Very different animal.

Op 18 psi is very high for a stock tbi engine - first step get a different guage and retest I suspect your guage is reading incorrectly.

Second if the fuel pressure proves to be 11-13psi and there are no “codes” then a scan tool is going to be your friend, you need to see what the ecm is seeing/doing.

Gramps,
Thank you, I did not know that.

1995 k1500 350 very rough idle

Lt1roady445

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PlayingWithTBI

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Schurkey

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Greasemagnet

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