idle and drivability problems

[zerg1024]

my sho is haveing a whole bunch of problems well i should say just one big one. my car is studdering like it is miss firing but i replace everything that could cause that and now it is still doing it. what could it be? when i rev it, it sounds like 2 or 3 cylinders arent firing and when i start to go from a stop it studders then goes back to normal operation, also under acceleration it does that. could it be the timing.

 

[Camarok]

ok you said you replaced everything... what is everything? did you do spark plugs and wires? if so ( i did this ) make sure you put the plug wires in the right way on the coil pack?

Engine
123
456

Coilpack
51
62
43

that's how it should look. I had the same problem... I thought I had too much carb cleaner in my intake from the 60k... but it didn't stop so i rechecked and that was it

Good luck

 

[Blast7]

Have you run any codes yet. Even if your CEL has not come on you may still have some stored codes. Check out www.shotimes.com for info on checking your codes.

 

[zerg1024]

yes i replaced the spark plugs and wires. i also replaced the CID, IAC, TPS, DIS module and Coil pack. i havent gotten a chance to run the codes i am going to have to do that on friday since that is my only day off so. i really dont know what it could be with my car. do u think it could be the timing is off?

 

[Blank-Disk]

i'm having this exact problem right now. Even when the problem is occuring the comptuer doens't throw any codes. Also, a Cyl balance test won't work because it advances the timing too much for the problem to occur. First, try HEAVY duty injector cleaner, that helped mine a lot, but didn't stopt eh shaking. i too am looking into a timing belt tensioner issue.

 

[zerg1024]

well could it be the timing is off or could it be the computer. this happens when i am starting to go from a stop and continues then when i shift gears it goes away until i give it more gas. i dont know what to do i am about to give up on it if it is something internal on the engine cause i dont have the time nor money to fix it. it is my only means of transportation so.

 

[DHMag]

oil in the plug wells ?

 

[zerg1024]

no no oil in the plug wells nothing i really dont know what is wrong.

 

[SHOZ123]

Make sure the plug powering the coil pack is secure and that the rubber seal is not interfering with the fit of the plug.

 

[Mr Anonymous]

And grounds, check the grounds. This is something that's often overlooked, yet can cause all sorts of problems.

 

[zerg1024]

i did all that and still nothing it sounds like it might be fuel system stuff like a previous post was made on the forum.so i will have to check that too.