annoying chirp

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
javadave
Posts: 46
Joined: Wed Aug 13, 2014 4:32 pm
Car: 1990 300ZX 2+2 NA 5-Speed
Location: Georgia, USA

Post

Hey guys and gals ;)
Did a full 120k maintenance on my z last month, with nearly 200k on her decided to put a new crank pulley on as well. Got her back together and started up perfectly. Not exactly sure how long afterwords, maybe a week or two she started chirping a few seconds after startup when cold.
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After a 5 minute warmup its as quiet as normal. Performs fine. MPG has gone up since belt change.
Anyone run into this before ?
Its driving me insane in the morning. If i don't take it out for lunch at work, she does it again when I start it up to go home for the day, some 10 - 13 hours later.

Thoughts, suggestions, guidance appreciated :)

BTW all parts were OEM from Z1 or Concept Z with the exception of the Ramey Z idler studs and the silicone bypass hoses.


z.Leinbach
Posts: 504
Joined: Thu Aug 06, 2015 10:08 pm
Car: 1990 Nissan 300ZX NA T-top
Location: Kennewick, Wa
Contact:

Post

Possibly have oil residue or coolant residue on a pulley. Pull the cover off and clean it with parts cleaner and see if that helps

z.Leinbach
Posts: 504
Joined: Thu Aug 06, 2015 10:08 pm
Car: 1990 Nissan 300ZX NA T-top
Location: Kennewick, Wa
Contact:

Post

I actually just had this problem trying to fix my front end rattle.. Irritated me xD

javadave
Posts: 46
Joined: Wed Aug 13, 2014 4:32 pm
Car: 1990 300ZX 2+2 NA 5-Speed
Location: Georgia, USA

Post

OK, thanks z, i'll look into it when I can get the covers off again.
;)


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