Strange idle

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Post Reply
User avatar
samdexy
Posts: 3
Joined: Sat Sep 05, 2009 1:47 am
Car: 1991 Nissan 300zx Twin Turbo

Post

I have a 91 300zx TT and lately it has been randomly idling much higher than it should around 1600-2000 rpm. Anyone know what could cause this high idle. Only have a z1 pop charger intake and exhaust everything else is stock. Any thoughts would be great. Thanks.

Top
robomatic12
Posts: 672
Joined: Sun Jul 12, 2009 12:05 pm
Car: 1990 300ZX TT

Post

Check iacv unit for proper operation, clean it out and use a new gasket. Ensure solenoids are reading correct ohms as per factory service manual available online for free (pretty sure there is a link on this forum to it or just google it).

Clean your throttle bodies, a quick search will show you a guide how to do it.

Check your tps for proper operaton and set voltage to 0.44v with a multimeter, again search and you shall find a guide.
Top
User avatar
Ace2cool
Posts: 11650
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

Post

http://www.nicoclub.com/FSM

There is also a section in the EF&EC section for troubleshooting a high idle when warm. (Page EF&EC 64)
Top
Post Reply

Return to “300ZX (Z32) Technical”

Search for Nissan stuff on ebay!
Find Your Forum!

 

NICOclub's Nissan forums and Infiniti forums and all affiliated sites are the property of HDS Holdings, Inc.
They are independent publications and are not affiliated with or endorsed by Nissan or Infiniti.

Information Copyright © 2000-2026 by NICOclub, all rights reserved. Material may not be copied or reprinted without written permission.

Privacy Policy