stumble/code 34

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
boost creep
Posts: 15
Joined: Wed Apr 02, 2014 6:08 am
Car: 1990 Nissan 300ZX -manual n/a 2+0.
Location: eastern nebraska

Post

my 90 n/a manual has a stumble or hesitation from idle to 2500-3000rpms. it does it 75% of the time and playing with the gas pedal ever so slightly can make it go away till the next time I down shift or up shift.
however if its cool out and I only let it warm up for a few mins and drive the car before its to normal operating temp. the car drives great, fantastic even! but once its warmed the stumble or hesitation sets in.

i ran my codes and it gave me a code 34 det sensor, im assuming its a bad connector or nasty terminals in the connector.
can I have everyones input on the det sensor issue. where it exactly is/how to deal with it, weather its most likely the culprit, if I should relocate it (as im an n/a I assume it wouldn't be a huge issue)


solaire
Posts: 161
Joined: Sun Mar 02, 2014 1:00 pm

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It's common for the sub harness from EFI harness to sensor to fail on these cars. The sensor is below the intake and takes alot of work to replace. Here's the solution most guys use to fix the problem.

http://www.angelfire.com/geek/vg30dett/ ... Rel01.html

I recommend buying a NISSAN OEM sensor on ebay (check part numbers) and get a new sub harness from Z1. Whole set up costs you about $55.

boost creep
Posts: 15
Joined: Wed Apr 02, 2014 6:08 am
Car: 1990 Nissan 300ZX -manual n/a 2+0.
Location: eastern nebraska

Post

yeah that's what I assumed. thanks for the info, that's not a bad price.

solaire
Posts: 161
Joined: Sun Mar 02, 2014 1:00 pm

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Was the problem resolved?


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