Quentin27

Just the other day my 91 runner started to sputter a little bit when I hit 40-50 mph. It then also started to do it at 20-35. It then stoped for a few days after I put fuel cleaner in cause it started right after I had gotten gas. It is now doing it again. Any advice? Thanks

justin_4runner

when was the last time u did tune up? fuel filter and what type of gas u buying?

sebastianholmes

its usually helpful if you tell what kind of motor it is...

Quentin27

I haven't done tilune up I just bought it 3 weeks ago and I use Regular gas. And it's a v6 3.0

tebro27

Good evening, try disconnecting the EGR valve.

banoobee17

i have a similar problem too like when i started it up the motor shakes and it sputters out of the exhaust but the motor shakes too so. i changed the coolant temp and fuel filter and spark plugs still the same symptoms motor shakes etc so i been reading bout simliar problems thinking bout changing the tps and o2 sensor but i was curious on what u guys might think it is and when cold or hot below 3000 rpms it sputters but not so much any above 3000 rpms

justin_4runner

how many miles are on that motor? have u checked the wires or replaced them? also injectors might be your problem, have u checked to make sure they are spraying right and not leaking? some more idea....

banoobee17

well the motor have bout 15,000 replaced my fuel filter and spark plugs i replaced some wires that i though they were bad and i also checked if they were firing with a timing light and i didnt see any leaking injectors but what happen i drove to school one moring i alwasy warm it up i drove it kind of hard then when i got out of school it started sputtering

banoobee17

i also siphoned some of my dads gas from another 4runner cause i was low on gas but i didnt know he was runnig with premium octane and i already had 87 oct in my could hat mess things up with compression or something. how can i check if my injector are spraying right?