User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 10-25-2019, 11:14 PM #1
AutomatiX AutomatiX is offline
Junior Member
 
Join Date: Aug 2019
Posts: 22
AutomatiX is on a distinguished road
AutomatiX AutomatiX is offline
Junior Member
 
Join Date: Aug 2019
Posts: 22
AutomatiX is on a distinguished road
I am at a complete and total loss... of acceleration

Well I'm well over 2 grand in the hole now.

Been having ongoing issues with the 2000 LTd 4wd v6 I have where acceleration will intermittently cut out and idles very rough as well.

I bought this car to take across the country with my two dogs from our place in Atlanta which I'm supposed to leave tomorrow to our new home in WA state.

The acceleration issue was and I still is a must fix issue as I don't want to be turning left on a green (or some other scenario) and the acceleration cuts out right in time for me to get plowed into by a 16 wheeler.

I have changed/replaced;

TPS (Throttle Position sensor)
IAC (Idle Air Control)
MAF (Mass Airflow Sensor)
Gaskets and valve covers
Air Filter
Spark plugs
Ignition Coils
Spark Plug cords
Timing Belt (did water pump too just because)
Fuel Pump and fuel level (which did fix the guage)
Both O2 Sensors

and most recently and expensively the catalytic converter.

I thought that fixed it and I was good to go but low and behold it reared it's ugly head while driving tonight.

This is becoming very expensive, I think I might have bought a ruin, but I was thrown off by a good auto check and low miles.

At this point the only thing I can think of is a Tranny problem or Vacuum Leak. Ive been scouring the forums since getting this vehicle and i've run out of leads on to what may be causing this... Oh and that's not the only issue either... I get wicked vibration between 50 and 65 mph, but the acceleration issue takes precedence since it could literally become a life and death scenario.

Any ideas other than a dark corner and a .45?
AutomatiX is offline   Reply With QuoteReply With Quote
Old 10-25-2019, 11:42 PM #2
4Reak Show's Avatar
4Reak Show 4Reak Show is offline
Senior Member
 
Join Date: Jul 2015
Location: Northern California
Age: 36
Posts: 1,471
4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light
4Reak Show 4Reak Show is offline
Senior Member
4Reak Show's Avatar
 
Join Date: Jul 2015
Location: Northern California
Age: 36
Posts: 1,471
4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light 4Reak Show is a glorious beacon of light
I think more info on the symptom would help. You said it "cuts out". So the RPM's drop back to idle and pushing gas pedal does nothing?

Or do the RPM's jump up with gas pedal but the truck doesn't move? Like movement cuts out?

Or maybe the engine tries to accelerate but slowly, like it's in third gear instead of first at take off?

Also, any similarities or consistencies of when it occurs? Cold? Hot? (Engine or weather) Turning? Directly from a stop? Trying to pass on the highway? When it rains or after washing it? Anything that you can think of that links the event helps to try and figure it out.

I can't gaurantee a fix via the Internet, but there no such thing as too much information.
__________________
The 4Reak Show: 1995 4Runner, 3.4 swapped, manual conversion, supercharged & 7th injected, Eaton TrueTrac in rear, poly bushings F&R, lots of other outrageous add ons...

Wife's: 2016 Trail Premium, bone stock until she joins T4R.org one day...
4Reak Show is offline   Reply With QuoteReply With Quote
Old 10-26-2019, 07:51 AM #3
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
Wicked vibration issues could be a bent rim which is easy to check. Also Lots of aftermarket rims dont center up properly on the hub. If they are A/M rims and not bent. I probably look into a good well spacer to get them centered on the hub probably.

Broken belts in tires on some occasions can give you a bad vibration.

Several other things can like a warped or bent rear drum. But that is mostly more noticeable when applying brakes.

Recapped tires will as well.

Sent from my SM-J337V 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 10-26-2019, 08:40 AM #4
Skibber Skibber is offline
Member
 
Join Date: Sep 2016
Location: Chicago
Posts: 75
Skibber is on a distinguished road
Skibber Skibber is offline
Member
 
Join Date: Sep 2016
Location: Chicago
Posts: 75
Skibber is on a distinguished road
See my post here regarding the acceleration issue. Andy Mod 2.0 with trac switch has been a work around for me.
Random hesitation when accelerating
Skibber is offline   Reply With QuoteReply With Quote
Old 10-26-2019, 10:22 AM #5
Js'00imited4runner's Avatar
Js'00imited4runner Js'00imited4runner is offline
Member
 
Join Date: Oct 2017
Location: Illinois
Posts: 261
Js'00imited4runner will become famous soon enough
Js'00imited4runner Js'00imited4runner is offline
Member
Js'00imited4runner's Avatar
 
Join Date: Oct 2017
Location: Illinois
Posts: 261
Js'00imited4runner will become famous soon enough
Could possibly be the efi/fuel pump relays, ECM? If you've replaced everything else I think those would be close to whats left to cross off your list..Hope you get it sorted out I know the feeling.
__________________
2000 Limited 4wd Millenium Silver Metallic, E rear locker, KYB Monomax All around, '99 tall coils up front with daystar 1" spacer, OME 890's in back, Weathertech Floor and cargo Mats, Track decal shackle Brackets, Satoshi grill mod (wahoo), Diff breather mod, 200k+ and still going strong!
Js'00imited4runner is offline   Reply With QuoteReply With Quote
Old 10-28-2019, 09:28 AM #6
Bad Luck Bad Luck is offline
Senior Member
 
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 4,410
Real Name: Patrick
Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute
Bad Luck Bad Luck is offline
Senior Member
 
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 4,410
Real Name: Patrick
Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute
Any codes set current or pending? When your lack of power occurs what happens to the rpms? Does it happen in a particular speed range?
__________________
2000 SR5 V6 Manual 4WD https://www.toyota-4runner.org/3rd-g...biography.html
2000 Limited V6 Auto E-Locker Sold 3/2022
Bad Luck is offline   Reply With QuoteReply With Quote
Old 10-28-2019, 11:09 AM #7
Bad Luck Bad Luck is offline
Senior Member
 
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 4,410
Real Name: Patrick
Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute
Bad Luck Bad Luck is offline
Senior Member
 
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 4,410
Real Name: Patrick
Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute
Quote:
Originally Posted by Skibber View Post
See my post here regarding the acceleration issue. Andy Mod 2.0 with trac switch has been a work around for me.
Random hesitation when accelerating
2000 4Runners and older don't have VSC or TRAC so Andy Mod 2.0 doesn't apply to the OP
__________________
2000 SR5 V6 Manual 4WD https://www.toyota-4runner.org/3rd-g...biography.html
2000 Limited V6 Auto E-Locker Sold 3/2022
Bad Luck is offline   Reply With QuoteReply With Quote
Old 10-28-2019, 11:16 AM #8
Reinout's Avatar
Reinout Reinout is offline
Member
 
Join Date: Oct 2016
Location: Lakebay, WA
Posts: 511
Real Name: Reinout
Reinout will become famous soon enough Reinout will become famous soon enough
Reinout Reinout is offline
Member
Reinout's Avatar
 
Join Date: Oct 2016
Location: Lakebay, WA
Posts: 511
Real Name: Reinout
Reinout will become famous soon enough Reinout will become famous soon enough
@AutomatiX You've prodded and probed of course, but I might suggest looking for a leak of some sort: It's also incredibly inexpensive to do especially if you have a can of brake cleaner.

With the truck running very strategical spray brake cleaner on various parts where air might escape or get sucked in (don't spray direct on sensors).

On our Hyundai I had a very similar set of symptoms as you have and I couldn't hear anything: a buddy had me do the exact thing I just explained: once I got to the intake manifold the car all of a sudden changed it's tone. In that case the manifold gasket had given up.

Good luck and welcome to WA! (When you get here)

(I tried to find a good video - nobody has one where they ACTUALLY find a vacuum leak)
__________________
1997 4Runner SR5- ~376k Miles and counting - 5 Speed E-Locker
2007 4Runner Limited V6- 165k Miles - Automatic - Brake Controller
2011 VW JSW TDI- 130k Miles - 6 Speed - Air Lift 1000
2006 Scamp trailer 16'

Last edited by Reinout; 10-28-2019 at 11:21 AM. Reason: Additional Info
Reinout is offline   Reply With QuoteReply With Quote
Old 10-28-2019, 03:18 PM #9
STI_MECE's Avatar
STI_MECE STI_MECE is offline
Member
 
Join Date: Aug 2019
Location: Iowa Colony
Posts: 327
STI_MECE will become famous soon enough
STI_MECE STI_MECE is offline
Member
STI_MECE's Avatar
 
Join Date: Aug 2019
Location: Iowa Colony
Posts: 327
STI_MECE will become famous soon enough
I will play devils advocate here abit...

The parts that you have replaced....did you replace them with OEM parts? and if so, was it you that replaced them or a mechanic?

And yes you would have to be more specific on rough idle and acceleration problems. its not specific enough.
__________________
2000 SR5 4x2 Resto/Maintenance
STI_MECE is offline   Reply With QuoteReply With Quote
Old 10-28-2019, 03:36 PM #10
AntleredRuin AntleredRuin is offline
Senior Member
 
Join Date: Aug 2015
Location: TX
Posts: 1,196
Real Name: Daniel
AntleredRuin will become famous soon enough
AntleredRuin AntleredRuin is offline
Senior Member
 
Join Date: Aug 2015
Location: TX
Posts: 1,196
Real Name: Daniel
AntleredRuin will become famous soon enough
Have you looked at the Fuel Pressure Regulator? It's just a spring loaded check valve on the end if your fuel rail hooked to a vacuum line. Maybe the spring is sticking (or similar)?

Mine failed completely and was dumping fuel into the air intake through that vacuum line. I'd get random hesitations/stalling, hard starting, rough idling, etc. Standard low fuel pressure issues, but a bit random. Got worse over time, though. I was able to remove the air intake and slosh fuel around in it, so I knew the FPR was leaking. Maybe check that, or smell for fuel from the line?

I was (and still am) literally the only other person I've seen on this site whose FPR went bad so I took the risk with a used OEM one and it worked great, over 4 years ago. The new part is $$$ but I bought a used one off eBay for around $35.

Last edited by AntleredRuin; 10-28-2019 at 03:39 PM.
AntleredRuin is offline   Reply With QuoteReply With Quote
Reply

Tags
acceleration , fix , issue , scenario , spark

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
Loss of acceleration - 06 4runner V8 4X4 uvabigm Problems & Warranty Issues 7 04-06-2021 01:43 PM
VSC (or ABS?) spontaniously engaging and loss of acceleration... by-tor 4th Gen T4Rs 12 01-02-2020 01:49 PM
loss of power during acceleration? DIRTY94RUNNER Classic T4Rs 8 10-30-2012 12:04 AM
No Acceleration, Loss Power! ctngo3 Problems & Warranty Issues 2 03-23-2009 09:31 PM
not a TOTAL loss Snookster 3rd gen T4Rs 2 12-22-2007 04:27 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 06:41 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