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Old 04-27-2011, 07:03 AM   #1
mrc
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random puttering issue

Ok so I have changed the spark plugs and the coils. The car doesn't seem to be missing. It doesnt buck when you put it in gear or shake when you come to a stop. It will fire right up and drive fine but once the car starts to heat up it starts to putter. It doesnt do it the whole time, just sometimes you will hit the gas and it putters and shakes a little the other times it will roar like it should. I havent changed the wires but they seem to be in good condition and I've seen no arcing from them when checking things out under the hood. The dashlights are also acting weird. When I start up the car the coolant light will be on even though the coolant is full. I'll drive to say the store and when I start the car up to drive back home the oil light will be on even though the oil is full. Does this sound like something that has happened to any of you before? Any help towards were to look next would be great. Thanks in advance, guys.
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Old 04-27-2011, 09:42 AM   #2
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Re: random puttering issue

u need to check all your grounds. make sure they are all tight. jmo
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Old 04-27-2011, 10:06 AM   #3
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Re: random puttering issue

Seems like a fair answer. I'll be honest though, I have no idea where I would locate all the grounds. Is there some where that I could locate a diagram? Or do you have any idea which ground wire might be loose?

I was thinking it could just be the fuel filter that needs to be replaced. I'm pretty sure the issue with the oil light might just be the oil pressure switch.
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Old 04-27-2011, 10:59 AM   #4
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Re: random puttering issue

dash lights acting weird is indicative of a poor ground. pins 20,40, and 60 are grounds on the pcm. but im willing to bet your loose ground is under the hood. did u reconnect the ground underneath the starter? check all the wires goin to the engine (bolted to metal) and grounds bolted to body of car....

sorry i cant be more help
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bbk ssi, 70ml t.b., bbk adj.reg., bd11-a 11psi, e-cam,
racing aod, 2700 stall, 3.42 gears, ported e7, 308ci, 1.7rr, comp .560valve springs, gear drive, high dwell module, msd 6a & coil, bbk off road xpipe, mac cat back, 30lbs inj, pro-m 90mm, welded subframe connectors, boxed upper & lower trailing arms, spherical axle bushings, 255/50/16 tires, 255lph pump, 456hp
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Old 04-27-2011, 11:06 AM   #5
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Re: random puttering issue

Actually thats lots of help. I really apreciate it! I just drove it up to get lunch. I noticed that it seems to do it when im going up a hill. It did it on the way there and the way back. Its got me thinking that maybe it is the plug wires. Having that extra load on the engine well going up the hill made it really feel like it was more of a miss. Pretty much after talking with you and searching online I'm gonna go ahead and change out the wires,replacethe fuel filter, check all the ground wires, and clean the MAF sensor. Sound like a good plan of attack?
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Old 04-27-2011, 11:24 AM   #6
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Re: random puttering issue

the thing bout plug wires is that u cant see inside them. they can be bad long before they start arc'n.
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bbk ssi, 70ml t.b., bbk adj.reg., bd11-a 11psi, e-cam,
racing aod, 2700 stall, 3.42 gears, ported e7, 308ci, 1.7rr, comp .560valve springs, gear drive, high dwell module, msd 6a & coil, bbk off road xpipe, mac cat back, 30lbs inj, pro-m 90mm, welded subframe connectors, boxed upper & lower trailing arms, spherical axle bushings, 255/50/16 tires, 255lph pump, 456hp
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