ported tb problem
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From: Coatesville, PA
ported tb problem i just ported my tb today and now it doesnt accelerate like it did before when i gun it from 60- 80 before it would jump up the speedo fast has hell now it accelerates alot slower? what do u think the problem is?
Originally Posted by nyg215
their was a thread that showed where to port it like the lip in front of the plate i ported it there and smoothed it all out nice.
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Launching!
Joined: Mar 2004
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From: Dallas Texas
Three words for you "Throttle Position Sensor"!!!! But seriosly after I did my TB a while back it worked great for the first frew weeks. However then I started notising the car wouldn't down shift correctly at certain times and would bog out. Long story short; I would throw a code every few weeks and noticed it was getting worse. So I watched the real time data yesterday and low and behold my TBS is sitting right at 0% open according to the PCM. So I guess its time to figure out the problem and get it fixed to make it run like a bat out of hell again. I also noticed my 02 readings were swinging from dead rich to bottom out lean according to the numbers I recorded (hopefully thats just because the PCM didnt' know I was on the gas 
)
) 
When I did my tb My throttle positioning sensor wasnt working and I actually messed up my butterfly and air was getting through but it only idled really high. It never acted dead tho....
I Fixed both and its still working good just not idling at like 2000rpm lol
I Fixed both and its still working good just not idling at like 2000rpm lol
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From: Fat Chance Hotel
That's an O2 sensor code if I'm not mistaken.
It's not uncommon for another problem to rear it's ugly head right after you touch something else. It's the cars' way of saying, "don't touch me."
It's not uncommon for another problem to rear it's ugly head right after you touch something else. It's the cars' way of saying, "don't touch me."
Thread Starter
11 Second Club
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From: Coatesville, PA
i dont have rear 02 sensors but i dont remember seeing that one before i dont know i reset the pcm so i have to drive it around a little bit the ses light hasnt come on yet. this thing is really pissin me off!!!!
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From: Fat Chance Hotel
I thinks it's a *front* O2 sensor code. Commonly referred to as a lazy O2.
On second thought, it could be that you created a vacuum leak up by the TB which would also cause this problem.
On second thought, it could be that you created a vacuum leak up by the TB which would also cause this problem.
Launching!
Joined: Mar 2004
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From: Dallas Texas
Originally Posted by nyg215
i just check my dtc's and i am throwing a new one DTC P0134 HO2S Circuit Insufficient Activity Bank 1 Sensor 1 . is that the throotle position sensor?
Mine only throws the error code every now and then; but when I watch the real time data while driving around using my predator. What I see is every time I have the 60MHP down shift at WOT problem were it doesn't downshift correctly my %TB is at 0% and after a minute or two it starts reading correctly. The actual TPS error says Throttle Position Sensor error when you scan the codes.
I am in the process now of dong the fill, half shaft, and port mod. What are the chances of my TPS going bad on me after the install? I will knife edge the butterfly, but I will not touch the area that it seals against the t/body. Is this going to cause more problems than it's worth? 
Do not mess with the knife edge unless you are confedent in your skill level. Take your time and take off alittle bit at a time and you should be fine but do not believe there will be a real gain on that part.
Originally Posted by Bo White
Do not mess with the knife edge unless you are confedent in your skill level. Take your time and take off alittle bit at a time and you should be fine but do not believe there will be a real gain on that part.
TPS... 
