User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 02-05-2023, 10:23 AM #1
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
Fast start when engine is warm

Before I go any further I have searched for answers on the forum. Some threads were close to my symptoms, but not exact. New battery, alternator, starters, battery cables

So when my engine is cold, it starts normal. Whenever I am running errands or traveling and the engine is at operating temp-it will start extremely faster than a normal cold start. Any thoughts? The mechanic I take it to is stumped and can’t figure it out. He said maybe an electrical issue
__________________
🇺🇸 2005 Limited v8, 255/75/17 Mastercraft MXT, ToyTec 3” Lift With Superflex Rear Springs, LED Interior Swap, 161,000 Miles 🇺🇸
🇺🇸 2000 Limited 3.4, 166,000 Miles, Bone Stock...Currently 🇺🇸
SC_4RunnerSC is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 11:47 AM #2
brillo_76's Avatar
brillo_76 brillo_76 is offline
Elite Member
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
brillo_76 brillo_76 is offline
Elite Member
brillo_76's Avatar
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
The fuel pump will not tun o until it gets a signal from the crank position sensor so that's mostly a 1.5 to 2 second after engaging the starter at cold.

When hot the fuel pressure is probably already there and it starts faster taking less time to fire up.

Most vehicles turn the fuel pump on when the key is in the on position. The 3rd gen 4 runner waits for the signal before enabling as a safety feature.



Sent from my SM-A536V using Tapatalk
__________________
7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
brillo_76 is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 12:06 PM #3
alumarine alumarine is offline
Member
 
Join Date: Dec 2015
Location: Manitoba, Canada
Posts: 900
alumarine has a spectacular aura about alumarine has a spectacular aura about
alumarine alumarine is offline
Member
 
Join Date: Dec 2015
Location: Manitoba, Canada
Posts: 900
alumarine has a spectacular aura about alumarine has a spectacular aura about
By faster do you mean it rev's higher than normal after a warm start?
__________________
2000 4runner 4wd Auto V6 - Tru-Cool LPD4454 trans cooler in series
1991 4runner 4wd Auto V6
1990 4runner 4wd Auto V6
alumarine is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 12:54 PM #4
Buckaroo's Avatar
Buckaroo Buckaroo is offline
Member
 
Join Date: Jun 2011
Location: Lewis Center, OH
Posts: 504
Buckaroo will become famous soon enough
Buckaroo Buckaroo is offline
Member
Buckaroo's Avatar
 
Join Date: Jun 2011
Location: Lewis Center, OH
Posts: 504
Buckaroo will become famous soon enough
Clean the Idle Air Control (IAC).
__________________
2000 T4R SR5 V6 (Retired) & 2005 T4R Limited V6
2002 & 2017 XLE Camry
2004 Honda Accord
2017 Tundra Limited DC 5.7L TRD 4WD
2024 Honda Pioneer 700-2 Deluxe
Buckaroo is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 02:17 PM #5
19963.4lsr5 19963.4lsr5 is offline
Elite Member
 
Join Date: Aug 2013
Location: Stouchsburg PA
Posts: 5,304
19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold
19963.4lsr5 19963.4lsr5 is offline
Elite Member
 
Join Date: Aug 2013
Location: Stouchsburg PA
Posts: 5,304
19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold
If you just replaced the battery it may need to relearn it’s hot idle IAC position. It’s an adaptive parameter that goes to factory default when the ECU looses power.

Could be a dirty IAC also. What does the hot idle settle to after a hot restart?


Sent from my iPhone using Tapatalk
19963.4lsr5 is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 07:27 PM #6
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
Quote:
Originally Posted by brillo_76 View Post
The fuel pump will not tun o until it gets a signal from the crank position sensor so that's mostly a 1.5 to 2 second after engaging the starter at cold.

When hot the fuel pressure is probably already there and it starts faster taking less time to fire up.

Most vehicles turn the fuel pump on when the key is in the on position. The 3rd gen 4 runner waits for the signal before enabling as a safety feature.



Sent from my SM-A536V using Tapatalk
So I should look into the crank position sensor? Thanks for the info, I’ll do some research
__________________
🇺🇸 2005 Limited v8, 255/75/17 Mastercraft MXT, ToyTec 3” Lift With Superflex Rear Springs, LED Interior Swap, 161,000 Miles 🇺🇸
🇺🇸 2000 Limited 3.4, 166,000 Miles, Bone Stock...Currently 🇺🇸
SC_4RunnerSC is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 07:28 PM #7
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
Quote:
Originally Posted by alumarine View Post
By faster do you mean it rev's higher than normal after a warm start?
By faster I mean this. When engine is cold, it’ll take say 2 seconds to start or so. Whe engine is warm and operating temp it’ll start in like 1/4 of a second
__________________
🇺🇸 2005 Limited v8, 255/75/17 Mastercraft MXT, ToyTec 3” Lift With Superflex Rear Springs, LED Interior Swap, 161,000 Miles 🇺🇸
🇺🇸 2000 Limited 3.4, 166,000 Miles, Bone Stock...Currently 🇺🇸
SC_4RunnerSC is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 07:29 PM #8
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
Quote:
Originally Posted by Buckaroo View Post
Clean the Idle Air Control (IAC).
Will do, I’ll look into it and clean it when I get a chance. Thanks!
__________________
🇺🇸 2005 Limited v8, 255/75/17 Mastercraft MXT, ToyTec 3” Lift With Superflex Rear Springs, LED Interior Swap, 161,000 Miles 🇺🇸
🇺🇸 2000 Limited 3.4, 166,000 Miles, Bone Stock...Currently 🇺🇸
SC_4RunnerSC is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 07:31 PM #9
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
SC_4RunnerSC SC_4RunnerSC is offline
Member
 
Join Date: Jul 2017
Location: Charleston, South Carolina
Posts: 58
SC_4RunnerSC is on a distinguished road
Quote:
Originally Posted by 19963.4lsr5 View Post
If you just replaced the battery it may need to relearn it’s hot idle IAC position. It’s an adaptive parameter that goes to factory default when the ECU looses power.

Could be a dirty IAC also. What does the hot idle settle to after a hot restart?


Sent from my iPhone using Tapatalk
This happened before I changed the battery as well. It’s been happening since I bought it 2 years ago. It’ll start every time no matter what, just super fast when warm. And when it’s warm, it’ll settle around 700rpm or so? I don’t drive it daily or actually much at all. Have a company car that I use every day
__________________
🇺🇸 2005 Limited v8, 255/75/17 Mastercraft MXT, ToyTec 3” Lift With Superflex Rear Springs, LED Interior Swap, 161,000 Miles 🇺🇸
🇺🇸 2000 Limited 3.4, 166,000 Miles, Bone Stock...Currently 🇺🇸
SC_4RunnerSC is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 07:36 PM #10
brillo_76's Avatar
brillo_76 brillo_76 is offline
Elite Member
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
brillo_76 brillo_76 is offline
Elite Member
brillo_76's Avatar
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
This is normal for these 3rd gens. What you are stating is normal behavior. :-)

Idle settling around 600 700 rpm is normal when all warmed up too.. :-)
__________________
7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
brillo_76 is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 08:19 PM #11
Pyral's Avatar
Pyral Pyral is offline
Member
 
Join Date: Jun 2021
Location: Eastern WA
Posts: 595
Real Name: N/A
Pyral has a spectacular aura about Pyral has a spectacular aura about
Pyral Pyral is offline
Member
Pyral's Avatar
 
Join Date: Jun 2021
Location: Eastern WA
Posts: 595
Real Name: N/A
Pyral has a spectacular aura about Pyral has a spectacular aura about
I don't see the problem. It's normal for the engine to start easier when warmed up.

My 4runner will start almost immediately when I twist the key and the engine is warm. Takes longer when it's cold, but no more than a second even then. The RPM will be above 1000 at idle on a cold start and go down to 700 rpm. Everything your describing is normal engine behavior.

Do modern cars not behave this way anymore? Every car I've been in with a twist key has always started easier on a warm engine.
__________________
1998 4runner 2.7 manual

Last edited by Pyral; 02-05-2023 at 08:21 PM.
Pyral is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 08:38 PM #12
alumarine alumarine is offline
Member
 
Join Date: Dec 2015
Location: Manitoba, Canada
Posts: 900
alumarine has a spectacular aura about alumarine has a spectacular aura about
alumarine alumarine is offline
Member
 
Join Date: Dec 2015
Location: Manitoba, Canada
Posts: 900
alumarine has a spectacular aura about alumarine has a spectacular aura about
Quote:
Originally Posted by SC_4RunnerSC View Post
By faster I mean this. When engine is cold, it’ll take say 2 seconds to start or so. Whe engine is warm and operating temp it’ll start in like 1/4 of a second
Normal.
__________________
2000 4runner 4wd Auto V6 - Tru-Cool LPD4454 trans cooler in series
1991 4runner 4wd Auto V6
1990 4runner 4wd Auto V6
alumarine is offline   Reply With QuoteReply With Quote
Old 02-05-2023, 08:47 PM #13
toverturf toverturf is offline
Member
 
Join Date: Apr 2020
Location: Northern Utah
Posts: 189
toverturf will become famous soon enough toverturf will become famous soon enough
toverturf toverturf is offline
Member
 
Join Date: Apr 2020
Location: Northern Utah
Posts: 189
toverturf will become famous soon enough toverturf will become famous soon enough
Yea pretty sure this is normal. Mine does it and have always thought it was normal.
__________________
1999 Limited with rear locker.
Sherpa Matterhorn | Sonoran Steel Diff Drop | SPC UCAs | DuroBumps Front and Rear | OME 890 Springs and Black Tokico Shocks | Eimkeith Reinforcements and PCK | King Coilovers | OCD Sway Bar Links | Opt Offroad Rear Arms | Lil Skips Gas Tank Skid Plate | FGP Rock Sliders | 4x Innovations Rear Plate Bumper with tire carrier
toverturf is offline   Reply With QuoteReply With Quote
Old 02-06-2023, 05:17 AM #14
19963.4lsr5 19963.4lsr5 is offline
Elite Member
 
Join Date: Aug 2013
Location: Stouchsburg PA
Posts: 5,304
19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold
19963.4lsr5 19963.4lsr5 is offline
Elite Member
 
Join Date: Aug 2013
Location: Stouchsburg PA
Posts: 5,304
19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold 19963.4lsr5 is a splendid one to behold
Quote:
Originally Posted by SC_4RunnerSC View Post
By faster I mean this. When engine is cold, it’ll take say 2 seconds to start or so. Whe engine is warm and operating temp it’ll start in like 1/4 of a second

I thought you meant rev higher. Yea, this is normal.


Sent from my iPhone using Tapatalk
19963.4lsr5 is offline   Reply With QuoteReply With Quote
Old 02-06-2023, 09:17 AM #15
thegipper's Avatar
thegipper thegipper is offline
Senior Member
 
Join Date: Mar 2016
Location: West Bend, WI
Posts: 2,339
Real Name: Mike
thegipper is a jewel in the rough thegipper is a jewel in the rough thegipper is a jewel in the rough
thegipper thegipper is offline
Senior Member
thegipper's Avatar
 
Join Date: Mar 2016
Location: West Bend, WI
Posts: 2,339
Real Name: Mike
thegipper is a jewel in the rough thegipper is a jewel in the rough thegipper is a jewel in the rough
I'll pile on. What you are experiencing is 100% normal.
__________________
1997 SR5 4x4 Auto, 99' tall coils up front, OME 906's, Truetrac LSD, Airaid MIT
1999 SR5 4x4 Auto for parts
2011 Camry SE V6
2011 Highlander Limited
thegipper is offline   Reply With QuoteReply With Quote
Reply

Tags
battery , cold , engine , normal , start

Thread Tools
Display Modes Rate This Thread
Rate This 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
98 T4R won't start after engine is warm protheroe1 3rd gen T4Rs 30 03-07-2017 03:52 PM
Warm engine takes longer cranking time to start? dbsoundman 3rd gen T4Rs 10 11-06-2014 07:30 PM
Car gets warm to fast, coolant smell 08t4rlimited Problems & Warranty Issues 3 12-29-2012 02:34 PM
Fast idle even when warm. WTH? Kamakura Kid Classic T4Rs 2 05-08-2008 03:23 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 08:26 AM.

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
 
Copyright © 2020