ohayonsean

Having a problem but cant seem to figure it out. My car sputters on take off
and in park it has a lil shake. Ive replaced fuel pump, water pump, valve job,
New spark plugs and wires. Can anyone help? Please..... Thanks.

ohayonsean

I still need help please anyone!!!

sawblade99Z

iTrader: (1)

First, I would say you need to clean your MAF. If that yields no results, unplug the sensor and start it. If the idle is smoother, the MAF itself may be the problem. And it wouldn't hurt to change the fuel filter if you haven't recently. Those would be the first three things I'd try, but I'm definitely not an expert.

joker_01z28

iTrader: (14)

sawblade is on the right track, id check the maf the sensor plug into the lid and on the throttle body and make sure they're connected, good luck

Juiced99

I had same problem...it was my MAF...Unplug it and drive it...if the problem stops its your MAF

demonspeed

iTrader: (7)

Another vote for the MAF.

ohayonsean

Thanks everyone I will try that

ohayonsean

Wouldn't I have a check engine light if its my MAF sensor I also tried unplugging it and the car stayed with a lil shake that it has then the car shut off

demonspeed

iTrader: (7)

Not necessarily, especially if it just needs cleaned. Try tapping on the housing with a screw driver while it's running. Not like super hard, but enough to "knock" to see if the element is out.

ohayonsean

How would I go about cleaning the MAF sensor and what should the car do by me tapping on the MAF sensor thanks for the post

demonspeed

iTrader: (7)

You either want this:



or this:



Just take the MAF out and spray on the entire inside of the sensor including the contacts and the honey comb. Stop spraying when it's just the clear fluid running out out of the MAF (not full of dark, dirty crud).

Tapping on the MAF... if the car stutters or even stalls when tapping, then wires inside the MAF are bad and it needs replaced. I would try cleaning it first, though.

Juiced99

Any update?

ohayonsean

I still need help with this car I replaced MAF sensor and I still have a lil shake in the engine and the lil hesitation on take off please help anyone cant seem to figure it out and spent over $2000 on parts and repairs. thanks

jclz28

Try checking to see if you have a vacuum leak. Buy a cheap gauge, hook in to a vacuum line, and see what it reads at idle. Let us know what it reads, should be about 15 inches. If not, you got a leak, which will cause all your symptoms. I would also change your fuel filter, cheap insurance. Next I would run a big container (the suv size) of techron injector cleaner thru, on an almost empty tank to get the concentration up. Lastly, you said you had a valve job. You may want to do a compression test if all else fails, and see if you have some leaking intake valves.. Best I can guess at the moment.