300zx bogs down on acceleration when warm

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Alexbsz32
Posts: 3
Joined: Sat May 12, 2018 5:16 am
Car: 1990 300zx n/a 5mt t top

Post

My 1990 300zx n/a 2+2 has a problem where after driving it for 20 minutes or so its start to limit the rpms i can reach then bogs down in gear but doesnt stall or die, when pressing the gas further it does absolutely nothing no response. then after im limited to 2000 rpm as if im in limp mode or something but when in neutral you can hit red line no problem only under load in gear it bogs down. so far ive changed

: new oem maf
: new ngk sparks
: new ntk o2 sensores
: checked codes no codes 55 none found
: new fuel filter
: tps
: ptu
checked proper voltage to maf

pls help !! :)


User avatar
DCaff300ZX
Posts: 4229
Joined: Sun Jun 14, 2009 8:18 am
Car: .
1993 CRP TT- Modified
Location: Tacoma, Washington

Post

Just to get started I'd do a COMPLETE corrosion sweep of the connectors, a common Z32 issue. Then check the "everything you need to know...Z32" sticky for the online service manual which has a lot of tests and such for the wide range of stall/hesitation/misfire/bad idle/etc. issues all so common to the Z32. There are far too many possibilities to dive in here without a lot more info and tests done, all which can be done with the help of the OSM.
If you still have trouble after testing, post up your testing results and hopefully we can then help you further.
Good Luck!

Fnalapprch
Posts: 6
Joined: Sat Mar 06, 2021 9:42 pm
Car: 1991 Nissan 300ZX

Post

I know this is an old post but I’m have the same issue with my 91 NA. Did you every get yours resolved, if so how??

scottgas
Posts: 176
Joined: Sat Aug 10, 2019 11:20 am
Car: 1996 Nissan 300ZX N/A steel roof

Post

Solution: remove VG30 and install LS...lol


Return to “300ZX (Z32) Technical”