Have a bucking problem. Changed spark plugs did not help. Car starts easy and runs smooth as glass. Hit the gas and it will throw you back in your seat. Get on the hwy doing 60 and boom..boom.....boom..boom..hard bucking all the way to work 60- 80 times or more. Could this be a fuel filter? or something more serious. Checked the wires to the coil packs and they are clean. Please help with advice.
Well in my madness of trying to figure it out with mama wanting it fixed and fixed fast and it being Hot! outside. I set back in the cool air with drink in hand wishing she had to do it instead of me, thought about it and said Ahhhhh! Coil pack or wires. I chose "coil pack" The problem is gone, Mama is happy and the world is right once again.
Coil pack would heat up and then breakdown.
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Common problem the the hard pcv line that runs towards the back of the motor from the pcv valve, they commonly rub parts, which causes holes in the plastic and a vacuun leak. It's easy the check just follow it back and around feel and listen for leaks. When have you changed the spark plugs? Trouble light on?
it sounds like you may have 2 problems. 1st vacuum leaks are fairly easy to find if they change idle/accelleration,alot of times you can hear it,the use of carberator cleaner spraying different vac hoses & gaskets while engine idles to see a difference in the way the engine idles(goes up/ down in rpm's)or using a unlit propane torch.if its a very tiny vac leak then a smoke test can be done. your hunting to find rev/drive maybe a worn switch or linkage
Check you've reinstalled the wires to the correct cylinders - if you've got this wrong, then you'll have problems.
Off hand, I'm afraid I don't know your cylinder order however - sorry, you'll have to check a manual for that one (unless someone else on here knows it off the top of their head?)
Hope this helps,
The new system is called a DIS (digital ignition system). Plugs are changed the same as usual, just without the cap and rotor. Instead of a single coil, now the new system has COPs (Coil over plugs) installed, these are recommended to be replaced around 75000miles and they are costly. hopefully this helps
Clean the MAF sensor with electrical cleaner then blow dry with light shop air or just let air dry.then disconnect battery for about 30 minutes to reset keep alive memory.Should take care of your problem.