Those codes are all pointing at a related issue. A/F ratio falling out of range, heater elements within the O2's out of temp range, EGR sensor or exhaust gas temp falling out of range, etc. There is a few areas to consider... Was any work recently done to the car that may have triggered this? When was the last time you replaced the O2 sensors? Check the O2 connectors and wiring to make sure one of them hasn't contacted the exhaust or melted. Any exhaust leaks especially before the cats? When was the last time you performed an induction service and cleaned the intake, TBs, IAC, etc? The EGR and IACV love to get carbon buildup over the years and can affect flow, similarly can happen to the vac lines to the factory wastegate control solenoid. You mentioned the car felt like it was still running well, so no idle RPM fumbling, hanging, stumbling, etc? Are you running an aftermarket boost control solenoid or OEM? Sorry for the load of questions, but need a bit more to go off of to help point you in the right direction. Even though the vehicle has considerable low mileage, it's still 30 years old. If it's kept in a garage it tends to handle the elements better than sitting out in the external environmental conditions and will need more routine maintenance and care regardless if it's being driven or not. (i.e. 60K / 120k maint w/ timing belt)
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protoj · 7 hours ago 7 hr
Hi all,
I am looking to get into 300zx ownership.
I would apreciate your advice and opinions on a couple of cars i was going to look at.
One in the for sale section "Awesome pearl white 300zxtt "
and another on ebay http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=270127500998&category=18238&sspagename=rvi:1:1v_buy
After reading up on the FAQ's on what to look for i was going to look for a manual but most seem to be auto's, i have read about the poss issues with the auto box's which put me off at forst but please feel free to talk me round.
Any advice help or opinions good or bad would be greatly apreciated