Help... With Upper plenum!
#1
Help... With Upper plenum!
I bought an Accufab upper intake plenum along with a 75mm throttle body. I connect everything like the stock peice, but now the rpms hover at about 2500rpm for about 5 secs then drop to normal about 750rpm. What could do causing this problem, has it happened to anyone else before.
There was an inlet on the Accufab unit that was much smaller so I thought that was the reason. Mabye they gave me one for a 99 because they have a smaller vaccum line. So I drilled it out and put the stock tube in and now the rpms hover a little higher and longer... Help!!!!
[IMG]local://upfiles/12416/6B3EACBF3A67499F87067F6B4D5F3180.jpg[/IMG]
[IMG]local://upfiles/12416/20DD043DD98D4700BF82A8EA4699B2FB.jpg[/IMG]
There was an inlet on the Accufab unit that was much smaller so I thought that was the reason. Mabye they gave me one for a 99 because they have a smaller vaccum line. So I drilled it out and put the stock tube in and now the rpms hover a little higher and longer... Help!!!!
[IMG]local://upfiles/12416/6B3EACBF3A67499F87067F6B4D5F3180.jpg[/IMG]
[IMG]local://upfiles/12416/20DD043DD98D4700BF82A8EA4699B2FB.jpg[/IMG]
#2
RE: Help... With Upper plenum!
This is a very common problem with the swap of plenums. Disconnect the battery over night and let it reset. It may take a couple weeks to fix itself. This happened to me when I installed a larger TB. Trust me, it will go away.
#5
RE: Help... With Upper plenum!
Why is it that some people experience this problem and others don't? It very frustrating. I can't figure out whats causing it, and what a couple weeks will do. I would think that the computer would respond no problem to this simple bolt on... But I guessed wrong.
#6
RE: Help... With Upper plenum!
had the same issue with my 2002 GT.... lasted two days, the second day i turned it on and off like 5 times then let it sit in idle for like ten minutes and walked away and it never did it again....who knows
#8
RE: Help... With Upper plenum!
I did notice a difference in power. But Since I drilled out that whole to the bigger size, my rpms at idle are 1200rpm... So it was like that for a reason. F*ck... Im just not going to use it, and put the stock upper plenum on. I tryed letting it idle for like half an hour, I now have a check engine light on. But disconnecting the battery will fix that. Thanks for your help though guys..