2000 GT idle

Bigbehr7

New Member
Apr 25, 2025
6
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1
Texas
Ok so, this thing has been through it, motor has been replaced recently, but had other issues after being left to sit for over a year to so the gas went bad and gummed up the new injectors has had a new fuel pump (twice) new filter, injectors have them treatment run through the just to be on the safe side. Will be watching this as closely as I can to update and give any answers some people might have.
It is throwing P0172 now and I smoked it to make sure no leaks.

The throttle is sticky ONLY initially, meaning, everytime i completely let go of throttle and reengage. Everything (but I'm pretty sure that's just from it sitting)

One of the exhaust pipes isn't properly fitted (post cat) dont think it has any correlation.

Cats, O2 sensors, and exhaust manifold are new (pre sitting)

MAF is brand new (post sitting)

When getting it running after it sat it needed a LOT of encouraging (starter spray) and would die repeatedly until new fuel went through all the lines and (obviously) cleaned out the crap gas

It has had multiple tanks of premium run through the system...

Is this potentially just a pull the injectors and manually clean them? Or could this be more?

NGK throttle body, cold air intake are the only mods.
 
Welcome to :SN: !

I'll throw my hat in and suggest that it may be related to your sticky throttle condition. Maybe something like the IAC or TPS - or maybe even both? But it definitely wouldn't hurt to have the injectors thoroughly cleaned and flow tested, although I'll render a guess and say that they're probably not so much of the issue.

I'm sure smarter people than I will be along to offer suggestions - good luck!
 
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Welcome to :SN: !

I'll throw my hat in and suggest that it may be related to your sticky throttle condition. Maybe something like the IAC or TPS - or maybe even both? But it definitely wouldn't hurt to have the injectors thoroughly cleaned and flow tested, although I'll render a guess and say that they're probably not so much of the issue.

I'm sure smarter people than I will be along to offer suggestions - good luck!
Appreciate the input I'll take a look at the IAC and TPS as well
 
So I hit something on the highway and it broke my purge valve in the front passenger wheel well, and now there's some new info...when I was driving it in the rain it would lurch BAD and would lose driving power in a vicious cycle if I gave it too much gas in the low (500-1000 rpms) and would completely lose power in the mid-high (above around 2800 rpms). And if I let it sit until after the rain passes and drive home it drives fine.

Please help me.
 
Oh...and in addition to the bank 1 rich code it threw bank 2 lean code, and a mass or volume flow circuit low, i have attached a screenshot of the codes.
1000003778.webp