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Old 06-03-2014, 06:35 AM   #1
Darkone
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Dizzy Saturn sw2 misfiring and hesataiting

Ok so to begin with my problem. I believe my engine is miss firing. I got this car from a friend is a sw2 and has 200k plus mile on it. So here is my issue. When I first start her up no problem. Idle is a bit high 1,200 and in drive 1000. After a warm up and the needle moves up past the first white marker on the heat indicator it starts to miss and surge a little at idle. Once I start moving it take me pushing the pedals further down then I need to to get it moving and it hesitates. I get it to about 30mph let of the gas idle goes down to 1,600rpm. Know I can slitly put my foot on the gas and it will run smooth but after a few sec the idle will go back down and start to buck until I let of the gas. Then when it shifts at 35to 40 mph it will start to buck very wildly until I push the gas peddle down further then it surges from 1800rpm to almost 3000. Then it will drop about 300 rpm every time. I've put new plugs in, new coolant, new tps, and cts. I've cleaned the throttle body out. Lots of carbon in the intake. Then what bugs me is the obd1 PCM is not throwing any lights. Know I know my transmishion mount needs to be replace but I don't think it is the issue here.

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Old 06-03-2014, 08:05 AM   #2
95sw2rustbucket
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1995 SW2
Default Re: Saturn sw2 misfiring and hesataiting

do a compression test and see what the numbers look like. I recently lost a cylinder (0 compression) and I had a burnt exhaust valve

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Old 06-03-2014, 07:44 PM   #3
Darkone
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Dazed Re: Saturn sw2 misfiring and hesataiting

Sorry I knew there was sompthing I forgot to mention this morning. I also hade compression cheated when I had the valve cover Changed. I've also replaced the fuel filter as we'll. I want to stay spark plugs or sompthing computer related myself. As it will run fine when I first prese the peddle then idle down and start bucking.

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