Throttle body mod
#1
Throttle body mod
I have pretty strange idle hunting especially after engine all warm up. I took the car to my friend's shop and found out that the previous owner made a hole on the flapper inside throttle body.
I searched the forum and look like that is some kind of mod but I'm still scratching my head on why he did this mod .... what the purpose anyway other than giving me idle hunting problem.
can anyone please explain?
I searched the forum and look like that is some kind of mod but I'm still scratching my head on why he did this mod .... what the purpose anyway other than giving me idle hunting problem.
can anyone please explain?
#2
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maybe the previous owner didnt know how to adjust his tps for the idling or knew that the screw in the throttle body adjusted idle. and just drilled a hole instead. im hoping not but i've never heard of this mod either! doesnt sound too reassuring.
#6
rotorhead
iTrader: (3)
replace the TB. That will cause a massive increase in air bypassing the throttle plates. Besides the ISC valve, the amount of air bypassing the throttle plates is normally adjusted by the air adjusting screw beneath the lower two studs. Whoever did that probably had an idle problem and didn't know how to fix it properly.
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#10
no I was wrong about the flapper it's on the body. I wasn't around when my friend took it apart. yeah look like the guy try to fix the idle by thrilling the hole but the idle problem is still there.
so apparently this is not a useful mod. I think I'm going to replace it in a week or two to fix my idle problem.
so apparently this is not a useful mod. I think I'm going to replace it in a week or two to fix my idle problem.
#16
rotorhead
iTrader: (3)
replace the TB. That will cause a massive increase in air bypassing the throttle plates. Besides the ISC valve, the amount of air bypassing the throttle plates is normally adjusted by the air adjusting screw beneath the lower two studs. Whoever did that probably had an idle problem and didn't know how to fix it properly.
#17
I got the answer to my original question: is it a mod? and most of you said it's not. thank you for that. about my idle problem, it's not high. it's hunting when engine is hot enough. and it's not stable. most of the time it 1k rpm, when it's hunting it's 750->1k rpm. now originally I thought the hole is bigger which makes my idle unstable.
anyway thank you all. I hope I could close the thread otherwise more laughing coming... gee
anyway thank you all. I hope I could close the thread otherwise more laughing coming... gee
#22
Mr. Links
iTrader: (1)
tnn,
Do some simple checks for on your ground connections. You have the ones on the UIM, drivers side of the engine (near the plugs), one on the exhaust.... I've seen people forget the one on the exhaust and have the idle hunting (and I've personally done it myself as well).
BTW, is your airpump still installed and working?
Do some simple checks for on your ground connections. You have the ones on the UIM, drivers side of the engine (near the plugs), one on the exhaust.... I've seen people forget the one on the exhaust and have the idle hunting (and I've personally done it myself as well).
BTW, is your airpump still installed and working?
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Jeff20B
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09-16-18 07:16 PM