I have 96 monte carlo with.3.4 engine idles but no horse power. the car will not get out of its own way. the car has a misfire on 1,3,5 cylcydiners. i replaced coil packs, module,map sensor,mass air flow seonsr,one injector. ful pump,fule filter ect,dropped the exhauslt and checked the cadicac converter make sure it as not clog and it stills runs the same. i dropped the exhauslt and try t turn th key but NO POWER
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Re: 96 monte carlo
I can surely help bet let me ask exactly what codes are you getting?if you have multiple codes maybe clear them and run it untill you start getting current codes,I have lots of info for you but get me the current codes Relax...we will get it fixed but keep in mind it wouldnt hurt to put a noid light on the injectors 1,3,5 because you may have a quad driver problem in the pcm.let me know have a good day DB
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ok everyone not trying to be unappreciative of your input and ideas however only w couple of you are even looking in the right area. generaly when your check engine light comes on its telling you your car is misfiring (obviously). its basically a caution light not so much a stop pull over and run type of light. yes you can damage your cat over a prolonged amount of time with no repair. so my thoughts on this are that is has to be the ignition coils. I drive a 90 vw and a 96 monte carlo. i just recently had this issue with my monte and first thing i did was replace the coil packs (ignition coils). result...light went out and not flashing or anything and perfermance is restored, all is well and it runs great. give that a shot, im 98% sure that will take care of your problem, and in your s40 there should be 2 coil packs, typically only one is bad but im that type of guy who doesnt wanna worry about the other one at all so i just replaced them all. they're typically around $50 each. my monte was $36 for 1 and there are 3. your s40 will only have 2 and there located directly under the plastic cover on top of the motor. hope this helps, good luck and dont waste your time searching in the wrong placed, check engine lights are usually sensors of an ignition misfire so if your not sure which one then just limp the car down to autozone and have them plug it in for free.
put number 1 piston so its on top then adjust distributer rotor to that piston from there you can scink it by ear by turning the whole distributer you will be able to hear the diffrenceand smell it if you getting too lean or heavy your spark plugs will let you know also.
I too would have pointed my finger at a plugged exhaust. When you dropped the exhaust did you try to drive around the block? If not, give it a go. It will be loud as heck but it will totally eliminate a plugged exhaust. keep in mind that the computer won't like it and will go into a default running mode, but it will still tell you whether the exhaust is a problem or not.