auto box problem help needed please

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October 26, 200322 yr

hi i have just bought a 300zx twin t h reg and my auto box is playing up the car drives fine but it does not want to go into 3rd and 4th gaer in my auto box but first and second are fine it stays in second and does not even change to 3rd or 4th shall i do a auto box diagnostic check or what please guys help me

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October 27, 200322 yr

may want to put this in the advice section mate, would help if i could but know nothing about autos

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Check engine light comes on and off sporadic.

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)

By protoj · 18 hours ago18 hr
JaiKai - MK2 - Ziggy Build

Time to clean the AC parts as i found a birds nest in it.

By JaiKai · Yesterday at 12:041 day
Check engine light comes on and off sporadic.

Hello, I have a 1996 twin turbo manual with 64k miles. I recently started having the check engine light come on sometimes and other times it doesn't. When I checked the codes these are what I got : If anyone has had these same codes what did they change to fix the problem. Car runs fine with check engine light on but want to fix issue. Any help would be greatly appreciated. Thank you.
P0400
P0136
P1150
P1155

By JB300ZXTT · Monday at 22:141 day
UK Importers Advice

Thanks for the recommendations, few different places recommended Gorilla so I will get in touch with them.

By CarmageddonTheMusical · Sunday at 13:332 days
Reverse switch problem

Me again.
Reverse lights don’t work. Checked the bulbs and the fuse by the drivers pedal, all seem fine.
So I assume it’s the reverse switch. I’ve bought a spare and tried to swap it today. What a pain that is! I failed.

So I have two questions:
Is this possible without dropping the gearbox?
I wanted to test it was definitely the switch before I went crazy getting it out, so unplugged the old one and plugged the new one in, put car in reverse and switched on ignition and then pressed the end of the switch in but it still didn’t turn the lights on. Does the switch work this way? That you can push the plunger end in and it should turn on?

By RobHowl · Saturday at 21:213 days

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auto box problem help needed please

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Check engine light comes on and off sporadic.

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