ES - 1st to 4th Gen (1990-2006) Forum for all 1990 - 2006 ES300 and ES330 models. ES250 topics go here as well.

I am surging!

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Old 08-29-13, 06:03 PM
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RCH701
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Default I am surging!

or maybe more of a hesitation. My old (230,000mile) lexus has begun surging between 2000 and 3000 rpm. I drove it to work this morning. Went 98% good. it hiccupped once. I took it to advance autoparts to get codes read and it was missing in drive at idle with a/c on. when rolling it struggles. it is not a solid miss. it is only sometimes.
I have checked the following:
MAF
VVT
fuel pump
replaced fuel filter
no water in the gas
i have been replacing coils as they go out
all plugs replaced a year ago
alternator and battery are good
The codes read are the following:
P0304 cyl 4 misfire
P0100 MAF (this is from me unplugging it while running)
P0110 Air temp Circuit
P1300 Igniter circuit malfunction

Any tips would be good. I am taking it to a shop on saturday. I have never been to a shop before. I would like to keep it that way.
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