1999 is200 3sge 6 speed
Have a rattle in my engine, intermittent in 2nd and 3rd gear mostly. As of 2 weeks ago the rattle is now accompanied by a brief loss of power on and off almost like bunny hoping if ur a noob at driving.
Will start at 3000 rpm but as soon as u accelerate past 3.5k - 4k it goes away.
Car starts fine runs fine, revs fine and drives fine apart from the issue described.
Over time have replaced spark plugs last week, 2 fault coil packs last year, cambelt water pump tensioners, plus 2 other belts, cleaned MAF gear box oil changed and gear box check as I thought the sound was a gearbox issue..but no gear box is fine. Have described fault to a friend of a friend and said it could be because I've been running it on 91 or could be knock sensor what ever that is.
Have yet to get a diagnostic test preformed, last mechanic I spoke to said to change spark plugs. Am almost at the point to take it too local Toyota dealer for a checkup but I don't wana mortgage my home to do so...anything I could try first at home is what I'm after.
Thank in advance for any help.