Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Discussion > Toyota Trucks & SUVs

Notices

2003 Toyota Tacoma V6 hesitation

Reply
 
Thread Tools Search this Thread
Old 08-30-2012, 07:59 PM   #41
Member
bseant is on a distinguished road
Joined: Nov 2011, #66725
Location: central valley,cali
Gender: Male
Posts: 36
bseant's Tacoma Gallery
spark plugs aren't the problem i change my often. And honestly i would just use the toyota spark plugs which are denso and not that expensive either, one of the few things i get from the dealership.
  Reply With Quote
Old 08-31-2012, 04:39 AM   #42
Junior Member
Eriksen0108 is on a distinguished road
Law Enforcement:
Name: Chris
Joined: Jul 2012, #81706
Location: NJ
Gender: Male
Posts: 28
Eriksen0108's Tacoma Gallery
I agree. Spark plugs aren't the problem. I changed my plugs, coils and wires with genuine Toyota parts and it did not correct the problem. You might need new plugs anyway if you haven't changed them before.
That RPM range is where my hesitation happens too. If I rev the shit out of it and take off at a higher RPM, it generally won't happen. But who wants to do that every time they take off? At the very least your clutch will take a beating.
  Reply With Quote
Old 08-31-2012, 08:51 PM   #43
Senior Member
FramerKat will become famous soon enough
 
FramerKat's Avatar
Name: kAt
Joined: Jun 2012, #80089
Location: Fort Lauderdale, Florida
Gender: Chick
Posts: 280
FramerKat's Tacoma Gallery
I figured I'd do the plugs and wires since I'm over 100k and I don't know if the prior owner did it before. And the Denso and NGK are the ones supplied by Toyota...Denso plugs are the ones they have at Advance...and I heard the NGK wires might be available at Napa...I've got both stores nearby.

My truck is still doing the hesitation...hot or cold, raining or dry (although, I think it did it more in the rain)...but in that same rpm range. Thinking if it's in a specific rpm range...maybe more fuel related? I'm still wondering if I may have stirred up some gunk by putting in Lucas fuel treatment that either clogged up the fuel filter or injector(s).
  Reply With Quote
Old 09-01-2012, 10:55 PM   #44
Member
bseant is on a distinguished road
Joined: Nov 2011, #66725
Location: central valley,cali
Gender: Male
Posts: 36
bseant's Tacoma Gallery
I dunno, i have the problem about the same rpm range as well
And yes you should change your spark plugs anyways. I usually change mine every 30,000 miles or so.
  Reply With Quote
Old 09-02-2012, 05:34 PM   #45
Junior Member
Toyota-Dually is on a distinguished road
Army: 1LT 93H
Name: David
Joined: Dec 2009, #28321
Location: Holden Massachusetts
Gender: Male
Posts: 18
Toyota-Dually's Tacoma Gallery
My hesitation is definitely NOT plug related because on a warm day when I step on the accelerator I get no response. Bad or non-firing plugs should only cause a rough underpowered response not a totally absent one.
And bad plugs wouldn't get worse with warm weather.

Is there a way to write to Toyota Corp. tech support and ask for their input?
I don't want to spend $98/hr at my dealer only to have them say no codes and it runs fine
  Reply With Quote
Old 09-03-2012, 07:48 AM   #46
Junior Member
Eriksen0108 is on a distinguished road
Law Enforcement:
Name: Chris
Joined: Jul 2012, #81706
Location: NJ
Gender: Male
Posts: 28
Eriksen0108's Tacoma Gallery
I brought mine to Toyota a while ago, but it did not produce the hesitation while they had it. They didn't charge me anything, just told me to bring it back when it's happening. The problem is that when it's happening, I'm not right next to a Toyota dealer, so it isn't hesitating by the time I get it there. I'm gonna wait until its happening frequently, which I suspect it will in September, then I'll bring it in and tell these people to drive it home for a week. It started hesitating a little yesterday because it's been raining a bit and a little muggy.
I doubt corporate Toyota gives a flying fuck about your letter, but if you want to give it a shot, I'll write one too.
  Reply With Quote
Old 09-03-2012, 08:07 AM   #47
Senior Member
FramerKat will become famous soon enough
 
FramerKat's Avatar
Name: kAt
Joined: Jun 2012, #80089
Location: Fort Lauderdale, Florida
Gender: Chick
Posts: 280
FramerKat's Tacoma Gallery
Yeah, mine did it really bad yesterday...had a frustrated cab behind me as I couldn't get the rpms up to get away from a light quickly enough I did find that if I can quickly get the rpms above the 1250-1750 range where it does it, I can move along better. And mine is an automatic, so it's harder to control the rpms.

Now I know why it never did it when I first got the truck...I was a tad lead footed...and now I've been lightening up to try to get better mileage and this appears...that's what I get for trying to drive slower
  Reply With Quote
Old 09-04-2012, 09:40 AM   #48
Junior Member
Eriksen0108 is on a distinguished road
Law Enforcement:
Name: Chris
Joined: Jul 2012, #81706
Location: NJ
Gender: Male
Posts: 28
Eriksen0108's Tacoma Gallery
My truck didn't do it either when it was new. I am very frustrated, to the point where i might just sell it. Landscapers(I mean the illegal kind) will pay top dollar, cash for that truck. I wish I could figure it out though. My plan was to put like 300,000 miles on it and run it into the ground...it's why I bought a Toyota in the first place. I have 112,000 on it...not nearly the mileage I had anticipated.
  Reply With Quote
Old 09-04-2012, 07:29 PM   #49
Member
bseant is on a distinguished road
Joined: Nov 2011, #66725
Location: central valley,cali
Gender: Male
Posts: 36
bseant's Tacoma Gallery
so far im leaning towards the o2 sensor but damn their like 250 a piece so its goin to have to wait for a little while, of course it takes two of them. It has to be something stupid.
  Reply With Quote
Old 09-06-2012, 07:36 AM   #50
Senior Member
RPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shed
 
RPain's Avatar
Name: Ryan
Joined: Jul 2009, #19596
Location: Tempe, Arizona
Age: 22
Gender: Male
Posts: 1,327
RPain's Tacoma Gallery
Evidence of a failing Toyota Tacoma Throttle Position Sensor might include rough driving, a change in engine speed while idling, stalling and hesitation and alterations to engine speed while driving. Your car engine's fuel consumption is controlled by the Toyota Tacoma Throttle Position Sensor and the fuel efficiency of the vehicle will plummet if it isn't performing up to par. A Toyota Tacoma Throttle Position Sensor is an important device that translates the slant of the throttle valve into electric signals so it can be used by the on-board electric control unit. Your Toyota Tacoma Throttle Position Sensor is a small but critical part of the car engine that provides readings from the car's engine speed to the built in ECU. Your automobile's Toyota Tacoma Throttle Position Sensor applies varying amounts of resistance to the throttle valve, which allows it to check the valve tilt with more accuracy.

^ this is my next attempt, TPS costs $60 at NAPA
  Reply With Quote
Old 09-06-2012, 03:46 PM   #51
Member
bseant is on a distinguished road
Joined: Nov 2011, #66725
Location: central valley,cali
Gender: Male
Posts: 36
bseant's Tacoma Gallery
please let us know how this turns out.

Quote:
Originally Posted by RPain View Post
Evidence of a failing Toyota Tacoma Throttle Position Sensor might include rough driving, a change in engine speed while idling, stalling and hesitation and alterations to engine speed while driving. Your car engine's fuel consumption is controlled by the Toyota Tacoma Throttle Position Sensor and the fuel efficiency of the vehicle will plummet if it isn't performing up to par. A Toyota Tacoma Throttle Position Sensor is an important device that translates the slant of the throttle valve into electric signals so it can be used by the on-board electric control unit. Your Toyota Tacoma Throttle Position Sensor is a small but critical part of the car engine that provides readings from the car's engine speed to the built in ECU. Your automobile's Toyota Tacoma Throttle Position Sensor applies varying amounts of resistance to the throttle valve, which allows it to check the valve tilt with more accuracy.

^ this is my next attempt, TPS costs $60 at NAPA
  Reply With Quote
Old 09-07-2012, 04:48 AM   #52
Junior Member
Eriksen0108 is on a distinguished road
Law Enforcement:
Name: Chris
Joined: Jul 2012, #81706
Location: NJ
Gender: Male
Posts: 28
Eriksen0108's Tacoma Gallery
I've thought about the TPS, but never changed it out because I figured it would throw a code. I even brought it up to a mechanic a while ago and he was certain that it couldn't be the TPS. I suppose it's worth a shot. Not sure it explains the heat or moisture coincidence, but fuck it, right?. Please let me know how that works out.

Wouldn't it be crazy if all of our hesitation problems were solved with one little sensor!?
  Reply With Quote
Old 09-07-2012, 07:09 AM   #53
Senior Member
FramerKat will become famous soon enough
 
FramerKat's Avatar
Name: kAt
Joined: Jun 2012, #80089
Location: Fort Lauderdale, Florida
Gender: Chick
Posts: 280
FramerKat's Tacoma Gallery
What RPain said about the TPS makes it sound like it may be the culprit...can't wait to hear if that affects it.

And speaking of TPS...reminded me of this: http://www.youtube.com/watch?v=Fy3rjQGc6lA
  Reply With Quote
Old 09-07-2012, 08:45 AM   #54
Senior Member
CrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shed
 
CrunchyTaco99's Avatar
Marines: Assaultman 2/5
Name: Joe
Joined: Apr 2010, #34396
Location: North Georgia
Gender: Male
Posts: 286
CrunchyTaco99's Tacoma Gallery
Looking at the TPS next. Had injectors professionally cleaned and installed new o2 sensor with a little increase in performance but power loss remains.
  Reply With Quote
Old 09-07-2012, 05:08 PM   #55
Senior Member
RPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shedRPain is one of the sharper tools in the shed
 
RPain's Avatar
Name: Ryan
Joined: Jul 2009, #19596
Location: Tempe, Arizona
Age: 22
Gender: Male
Posts: 1,327
RPain's Tacoma Gallery
Quote:
Originally Posted by FramerKat View Post
What RPain said about the TPS makes it sound like it may be the culprit...can't wait to hear if that affects it.

And speaking of TPS...reminded me of this: http://www.youtube.com/watch?v=Fy3rjQGc6lA
haha greatest movie ever!

Well I bought the TPS today but can't get the old one off because I stripped one of the screws.
  Reply With Quote
Old 09-07-2012, 05:39 PM   #56
Senior Member
newertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shednewertoy is one of the sharper tools in the shed
 
newertoy's Avatar
Coast Guard: electronics tech
Name: Kevin
Joined: Feb 2010, #32204
Location: East Tn
Gender: Male
Posts: 1,420
newertoy's Tacoma Gallery
Here are a couple links BEFORE you replace the TPS.
One is how to test-the other is adjustment--which WILL need to be done if it is replaced.
HOPE THIS HELPS.
http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml
http://www.yotatech.com/f2/tps-adjustment-43409/
.
  Reply With Quote
Old 09-07-2012, 09:12 PM   #57
Member
bseant is on a distinguished road
Joined: Nov 2011, #66725
Location: central valley,cali
Gender: Male
Posts: 36
bseant's Tacoma Gallery
Quote:
Originally Posted by CrunchyTaco99 View Post
Looking at the TPS next. Had injectors professionally cleaned and installed new o2 sensor with a little increase in performance but power loss remains.

did you replace both sensors or just one?
  Reply With Quote
Old 09-07-2012, 10:16 PM   #58
Senior Member
CrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shed
 
CrunchyTaco99's Avatar
Marines: Assaultman 2/5
Name: Joe
Joined: Apr 2010, #34396
Location: North Georgia
Gender: Male
Posts: 286
CrunchyTaco99's Tacoma Gallery
Just the primary or upstream sensor. From what I understand it is the air fuel reader and the secondary or down stream sensor just checks up on the cat. I do not have an o2 code or cat code so I had no reason to replace the secondary.
  Reply With Quote
Old 09-10-2012, 04:34 PM   #59
Junior Member
toyotaman4456 is on a distinguished road
Name: phillip
Joined: Sep 2012, #86634
Location: ga
Gender: Male
Posts: 1
toyotaman4456's Tacoma Gallery
it's most likely your throttle body and you can't get the parts to fix it from toyota its a sinsor on the inside of the throttle body but in oder to replace it you have to buy the throttle body 1200$ mine was doing the same thing
  Reply With Quote
Old 09-10-2012, 08:03 PM   #60
Senior Member
CrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shedCrunchyTaco99 is one of the sharper tools in the shed
 
CrunchyTaco99's Avatar
Marines: Assaultman 2/5
Name: Joe
Joined: Apr 2010, #34396
Location: North Georgia
Gender: Male
Posts: 286
CrunchyTaco99's Tacoma Gallery
Quote:
Originally Posted by toyotaman4456 View Post
it's most likely your throttle body and you can't get the parts to fix it from toyota its a sinsor on the inside of the throttle body but in oder to replace it you have to buy the throttle body 1200$ mine was doing the same thing
Ya, posted about that a page back. APPS sensor. Gonna try a few things before I drop that kind of money!
  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
FOR SALE: 2003 Toyota Tacoma Double Cab PreRunner V6 ONLY 12K miles!!! 79cruiserfj40 Buy / Sell / Trade 4 11-25-2013 02:50 PM
2003 Tacoma ext. cab v6 5 spd parting out Tony 1st Gen. Tacomas 11 03-10-2011 10:39 AM
Just got my 2003 Tacoma V6 PreRunner - tire size? rolandol New Members 3 02-02-2010 04:53 AM
2003 Tacoma TRD V6 Purchase markveneris 1st Gen. Tacomas 16 02-01-2010 09:31 AM
rocketeer928 - My 2003 Tacoma SR5 V6 Manual 4WD rocketeer928 New Members 11 09-24-2009 07:20 PM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.