Some more top swap questions! Yay!

[Tonkin2000GT]

The thing is you didn't have a misfire originally when you first started the motor after the top swap correct?

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[suitercrew]

Well for starters its not like i can feel the misfire and it has never popped up as a real code only as a pending code. It also doesnt pop up right away i cleared the codes 3 times today and each time it took atleast 15 mins to come back.

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[Tonkin2000GT]

It's either you have a misfire or you don't it wouldn't show up if you didn't have it

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[suitercrew]

Well ya im just saying its not like the light came on so i have no idea when it first popped up. Im thinking injector what else could it be?

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[Tonkin2000GT]

Valve or a hole in the piston I don't think you understand how bad 4° of kr is and what it can do

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[suitercrew]

What would be wrong with the valve?

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[Tonkin2000GT]

I'd do a compression check first that'll narrow it down then if that's good I'd get a bore scope and look down the cylinder

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[suitercrew]

Well first im switching the fuel injectors. Keep in mind these are jy injectors thats the cheapest fastest posibilittly here. I lapped all the valves the cylinder was in great condition and ive been getting a shake from the motor ever since first start up. I got money on the injector

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[suitercrew]

So switched injectors around and still getting cylinder 3 missfire.. Also just got a pending code for p0654 which is engine speed output. Any ideas guys?

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[Scottydoggs]

http://www.autocodes.com/p0654_pontiac.html


you might have a beat pcm, being you just changed it.

[suitercrew]

Would that have anything to do with the missfire?

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[Scottydoggs]

hard to say really.contact reptile, see what he says about the newest code.

[suitercrew]

Maybe this could explain why my cel supposedly just went out at the same exact time i did the swap

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[Scottydoggs]

either that or your cluster is messed up, as per the code list of thinks to check.

the car will run with the cluster removed. theres 4 small bolts that hold it in after you pop the trim off. unplug it, take it out, see if its still acting up.

[suitercrew]

Well i have to work all day so i wont have much time for that :/ but what do you think about the missfire im pretty sure i have checked everything but the voltage on the injector connector. Everything else is gonna be head or piston failure i believe. *Sighh*

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[suitercrew]

Could it be something easy like a stuck lifter or something on that cylinder or if it was a gasket leak where could it leak from that wouldnt get coolant in my oil or vice versa or affect another cylinder?

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[SgtMarshal]

You are over complicating the issue like I always do

[Scottydoggs]

Could it be something easy like a stuck lifter or something on that cylinder or if it was a gasket leak where could it leak from that wouldnt get coolant in my oil or vice versa or affect another cylinder?

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nothing easy about a stuck lifter, aka thats a dead engine. and you'd hear that. gaskets are fine or you'd know it.


4º of kr is a top swap killer aka hello chipper.

being you got that new code, i suspect the pcm, maybe the cause of it all. after all they are used pcm's with no real history of how they worked in the past.

[suitercrew]

Hmm maybe i can get reptile to send another. Also noticed something odd driving to work when i let off the gas and coasting to a red light my vaccum goes down to around -22 but then for no reason it will start bouncing inbetween -22 and -15 still coasting with foot off the gas

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[Scottydoggs]

take the sc belt off put your stock pcm back in, see if it has the same codes pop up. and if the fuel trims head to a normal place.