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sleeperMULLET · 09-20-2006, 09:52 PM

Hey guys, I posted this on another tech forum but I want to see if any local people have any ideas, I aapreicate all help:

Ok guys, I really need some help. My mods are in my sig.

On startups whether the car is cold or hot I will get knock retard in OPEN LOOP only. Starts at 7º then goes down slowly until its around .3 or .1
While its doing this, and its still in open loop, the o2 voltages stay still, its not going up and down like its supposed to. I don't know if that will effect anything even though the voltages are disregarded in open loop.
Still in open loop the IAC count is at 160 with TB set screw all the way open.

As soon as the PCM goes into closed loop the knock retard goes away.
The IAC count goes to 0 and the engine idles fine for a few minutes then it drops 200-300 rpm and then goes back to 1000rpm. I have my idle set screw at 1000rpm because if i lower it more then IAC will max itself out.
So when I drive it there is no knock retard at all, I can go WOT and there is none at all. When I look at the IAC counts with my foot on the gas they go up. When I come to a stop, they go down until they hit 0 if i'm stopped long enough.

I'm going to drive around tommorow with a laptop to get a good datalog.

So today I changed my oil and it was a bit dilluted with gas, i think its either from the knock retard causing a little blowby if thats possible or the rings aren't seated yet. The engine currently has 120miles on it.
When I started the car after the oil change it still does the same thing in open loop, but i let it idle for about 10 minutes, and I pulled the fresh air tube off the TB and a little bit of smoke was coming out. I took the oil cap off and the same smoke was coming out. There was a little bit of oil where the tube conncets to the TB and a little bit behind the TB blades. I took out the PCV valve and there was a bit of oil on that too. I'm going to do a compression test to make sure everything is ok.
If i'm getting excessive blowby will I feel a lose of power? The car feels so fast, I broke traction when I punched it at 65mph.

One more thing, when I'm crusing to a stop or just let of the gas at low speeds the car bucks a little bit. When I get the rpms above 2000 it goes away, it doesn't feel like a missfire, is this cam surge? I have the CC306.

I don't know what is going on with it and its driving me crazy. All help is greatly appreciated. Thanks in advance.

09-20-2006, 09:52 PM	#1
sleeperMULLET Join Date: Jan 2005 Location: South Jersey Posts: 104 iTrader: (0)	I think I need a tune, long story. Hey guys, I posted this on another tech forum but I want to see if any local people have any ideas, I aapreicate all help: Ok guys, I really need some help. My mods are in my sig. On startups whether the car is cold or hot I will get knock retard in OPEN LOOP only. Starts at 7º then goes down slowly until its around .3 or .1 While its doing this, and its still in open loop, the o2 voltages stay still, its not going up and down like its supposed to. I don't know if that will effect anything even though the voltages are disregarded in open loop. Still in open loop the IAC count is at 160 with TB set screw all the way open. As soon as the PCM goes into closed loop the knock retard goes away. The IAC count goes to 0 and the engine idles fine for a few minutes then it drops 200-300 rpm and then goes back to 1000rpm. I have my idle set screw at 1000rpm because if i lower it more then IAC will max itself out. So when I drive it there is no knock retard at all, I can go WOT and there is none at all. When I look at the IAC counts with my foot on the gas they go up. When I come to a stop, they go down until they hit 0 if i'm stopped long enough. I'm going to drive around tommorow with a laptop to get a good datalog. So today I changed my oil and it was a bit dilluted with gas, i think its either from the knock retard causing a little blowby if thats possible or the rings aren't seated yet. The engine currently has 120miles on it. When I started the car after the oil change it still does the same thing in open loop, but i let it idle for about 10 minutes, and I pulled the fresh air tube off the TB and a little bit of smoke was coming out. I took the oil cap off and the same smoke was coming out. There was a little bit of oil where the tube conncets to the TB and a little bit behind the TB blades. I took out the PCV valve and there was a bit of oil on that too. I'm going to do a compression test to make sure everything is ok. If i'm getting excessive blowby will I feel a lose of power? The car feels so fast, I broke traction when I punched it at 65mph. One more thing, when I'm crusing to a stop or just let of the gas at low speeds the car bucks a little bit. When I get the rpms above 2000 it goes away, it doesn't feel like a missfire, is this cam surge? I have the CC306. I don't know what is going on with it and its driving me crazy. All help is greatly appreciated. Thanks in advance.