GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

GS 300 running rich

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Old

Apr 3, 2024 | 08:18 PM

#1

itspalm

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2nd gear

Joined: Apr 2024

Posts: 2

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From: TX

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GS 300 running rich

Car has been running rich for around the past month, I've replaced the 02 sensors and made sure they're on snug, new MAF sensor, new TPS, New Injectors, New Fuel Pump, New spark plugs, new coil packs but it's still running rich. I've tried unplugging the battery overnight to try and reset the ecu but nothing is working. Does anyone have any suggestions on anything I should look at or attempt in order to fix this issue?

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Old

Apr 4, 2024 | 08:30 AM

#2

Scigheras

Pit Crew

Joined: May 2020

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From: the Netherlands

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How are you determining it's running rich?

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Old

Apr 4, 2024 | 04:52 PM

#3

itspalm

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2nd gear

Joined: Apr 2024

Posts: 2

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From: TX

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Quote:

Originally Posted by Scigheras

How are you determining it's running rich?

did a scan on it and long term fuel% trim on bank 1 and bank 2 were around -40%

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