99 yukon 350 vortec

normal accelerating is pretty good. but, push the peddle down and forget it, don’t try to pass or merge. pulled the plug on the mass air flow sensor and it ran like new…however problem came back after maybe a month or so…???

Purchase two sprays: 1- Mas sensor cleaning spray. 2- Contact cleaning spray.

Clean the MAS sensor screen and then clean the contacts of both plug and receptacle. Don’t saturate the receptacle with the contact cleaner. Good Luck.

Thanks, I’ll give it a try…