Home Menu

Site Navigation


Toyota 4Runner Forum - Largest 4Runner Forum > > > Help diagnosing a sound on cold startup - any ideas?
User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-01-2022, 12:37 PM #1
N8G N8G is offline
Member
  
Join Date: Nov 2005
Location: Milwaukee, WI
Age: 48
Posts: 76
N8G is on a distinguished road
N8G N8G is offline
Member
 
Join Date: Nov 2005
Location: Milwaukee, WI
Age: 48
Posts: 76
N8G is on a distinguished road
Question Help diagnosing a sound on cold startup - any ideas?
The sound happens whenever I start it up (05 4.7L V8) and is coming from the engine area and lasts about 30 seconds. It sounds like some kind of pump whine. Any ideas what it could be and if it is an easy fix?

Here is a link to a video of the noise: Video Sound
N8G is offline   Reply With QuoteReply With Quote
Old 06-04-2022, 09:08 AM #2
AuSeeker AuSeeker is offline
Senior Member
  
Join Date: Nov 2016
Location: South Carolina
Posts: 4,644
Real Name: Skip
AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future
AuSeeker AuSeeker is offline
Senior Member
 
Join Date: Nov 2016
Location: South Carolina
Posts: 4,644
Real Name: Skip
AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future
Quote:
Originally Posted by N8G View Post
The sound happens whenever I start it up (05 4.7L V8) and is coming from the engine area and lasts about 30 seconds. It sounds like some kind of pump whine. Any ideas what it could be and if it is an easy fix?

Here is a link to a video of the noise: Video Sound
It's possibly the SAIP (Secondary Air Injection Pump), if you haven't done the bypass, I would do it....or you can have the pump and related other parts replaced to have it all working properly...but it's not cheap to have done since the pump is buried under the intake manifold along with the starter motor.

Here's a link to a long topic on the SAIP issue so you can read up on this problem.

Secondary Air Injection Pump Failure on V8's! Important!

Maybe if I mention @slyfox75 he will see this topic and stop in to give his opinion, he sells a bypass kit that works and it's not over priced like others out there, and if the SAIP is your problem it will stop the noise.
__________________
2004 Limited V8
AuSeeker is offline   Reply With QuoteReply With Quote
Old 06-04-2022, 09:12 PM #3
slyfox75 slyfox75 is offline
Member
  
Join Date: Aug 2006
Location: Natchitoches, LA
Posts: 207
slyfox75 will become famous soon enough
slyfox75 slyfox75 is offline
Member
 
Join Date: Aug 2006
Location: Natchitoches, LA
Posts: 207
slyfox75 will become famous soon enough
Yep, you got the "ole AIP whine".
You wont hear it on a warm engine, just first cold start of the morning....or maybe after work if its been sitting a long time.

Let me know if you need further help, email me for fastest response....im not on here every day.
__________________
2005 SR5 V8 4x4. Shrockworks Sliders, 4th gen Limited Wheels, Falken Wildpeak ATW3, Slyfox75 Bypass of course, Bilstein 5100s w Dobinson's Coils(314 & 505)
Slyfox75 AIP/SAIS bypass kit. Bypass = $49 Stainless Blockoff Plates $28(pair) email to jeffcolemaps at gmail for more info or questions. -jeff
slyfox75 is offline   Reply With QuoteReply With Quote
Old 06-05-2022, 11:06 PM #4
N8G N8G is offline
Member
  
Join Date: Nov 2005
Location: Milwaukee, WI
Age: 48
Posts: 76
N8G is on a distinguished road
N8G N8G is offline
Member
 
Join Date: Nov 2005
Location: Milwaukee, WI
Age: 48
Posts: 76
N8G is on a distinguished road
Thank you @AuSeeker and @slyfox75 ! I have an email out to Jeff to inquire about getting a bypass kit.
N8G is offline   Reply With QuoteReply With Quote
Old 06-15-2022, 10:20 AM #5
N8G N8G is offline
Member
  
Join Date: Nov 2005
Location: Milwaukee, WI
Age: 48
Posts: 76
N8G is on a distinguished road
N8G N8G is offline
Member
 
Join Date: Nov 2005
Location: Milwaukee, WI
Age: 48
Posts: 76
N8G is on a distinguished road
Installed the Slyfox kit over the weekend. Works like a charm. No more whine and caught it before catastrophic failure. Thanks much for the diagnosis!
N8G is offline   Reply With QuoteReply With Quote
Reply

Tags
ideas , pump , sound , video , whine

« Previous Thread | Next Thread »

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help diagnosing sound. MuddyButt 3rd gen T4Rs 10 09-24-2016 12:13 AM
Sloshing sound on cold startup - 2005, 146,000miles dwulffusa 4th Gen T4Rs 4 10-06-2015 10:48 AM
V8 squeal on cold startup toy4x4boy Problems & Warranty Issues 4 02-11-2007 09:57 PM
04 V-8 Ticking at cold startup Mulepick Problems & Warranty Issues 1 01-19-2007 03:23 PM
Knocking on cold startup AK602 Problems & Warranty Issues 9 12-11-2005 04:32 PM

» Follow Us!!!
» Log in
User Name:

Password:

Not a member yet?
Register Now!
Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 04:21 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Toyota - 4Runner . org Forum Terms and Privacy Policy
Copyright © 2020