Missing At Idle

[pearlwhite97ES]

Hello all,

Heres the problem. when i idle in drive or park my 97 es 300 will miss sometimes. i put 93 octane and techron and it quit for a tank full of gas then it came back then I filled up and added another bottle of the techron. it now idles fine again but now im on alert at every stop. Does anyone know if this is a common thing or any ideas on how to help it? thanks d.w

by the way it has 120,000 well cared for miles :whistles:

[SKperformance]

get a motorvac you have carbon build up

do you now run 93 but before only 87 ?

[pearlwhite97ES]

I have run 93 since I bought it, but when I filled up without techron i starting missing a bit then i filled up again with 93 and put another bottle in and it ran smooth with little hesitation. where does one go

for a motor vac? never heard of it

[brian_k03]

spark plugs