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Joined: Jun 2004
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mookie60
New Member
mookie60 Jun 3, 9:07pm - #191357 
1986 White Toyota Celica
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1986 Toyota Celica

Joined: Jun 2004
Posts: 4
florida
2000 GTS, No Throttle Response


First time posting!
Thanks to all who can offer a suggestion.

My friend recently got a used 2000 GTS (60k miles) from a toyota dealer. Intermittently, when the throttle pedal is pressed, there is no response from the engine at all - just sits at idle. After a few seconds and a few presses of the pedal (which feel normal) the engine will begin to respond normally. It does not seem to matter whether the engine is warmed-up or not.

The dealer replaced the mass air flow sensor, under the "toyota certified" guarantee. The problem persists and now the service dept says they will not perform any further service.

any suggestions?

Thanks
John
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 3, 9:24pm - #191358 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
Mine use to do the same thing and this is what I did to stop that delayed throttle response:

1) Lucas Fuel Injector cleaner
2) (4) New Denso Iridrium Spark Plugs from www.sparkplugs.com and anti-seize lubricant for the plug threads
3) Tighten throttle cable
4) Clean the air canal of the mass air flow sensor.
5) Reset ECU.
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Posts: 338
Brian63
Member
Brian63 Jun 3, 9:26pm - #191359 

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2000 Toyota Celica

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Posts: 338
Macomb IL
Mine did that before I bought it and the dealer replaced the sensor and now its fine. I would go back to the dealership and bitch smack someone
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Steven
ECelica Staff
Steven Jun 3, 9:28pm - #191360 
2001 Spectra Blue Mica Toyota Celica GTS
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2001 Toyota Celica GTS

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Posts: 3,295
Riverside, CA
The spark plug part # for the Denso Iridriums is SK20R11 on www.sparkplugs.com
Joined: Jun 2004
Posts: 4
mookie60
New Member
mookie60 Jun 3, 10:40pm - #191361 
1986 White Toyota Celica
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1986 Toyota Celica

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florida
Steven,

is the "canal" part of the sensor, or is that just the top of the air cleaner housing? was there obvious deposits/built-up that could have effected the sensor?
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Steven
ECelica Staff
Steven Jun 3, 11:31pm - #191362 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

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Posts: 3,295
Riverside, CA
Here are some instructions on how to clean your mass air flow sensor: https://www.celicahobby.com/ubbthreads/thread.f_1862388016_0_collapsed_2__1.html
Joined: Jun 2004
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mookie60
New Member
mookie60 Jun 4, 1:18am - #191363 
1986 White Toyota Celica
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1986 Toyota Celica

Joined: Jun 2004
Posts: 4
florida

I'm sure this sensor will be worth taking a look at, but the dealer has already replaced it ... so unless there's a short in the plug/wire, it's probably something else. This thing doesn't just hesitate, it doesn't budge off idle when this occurs.

Is this correct? - If the engine's ecu does not get a signal indicating additional airflow (due to opening of throttle plate), then additional fuel will not be delivered ... right? hmmm, maybe that plug is worth checking.

thank you
john
Joined: Apr 2003
Posts: 2,451
DiabloGTS
Wheezy Joe
DiabloGTS Jun 4, 2:18am - #191364 

Wheezy Joe
2002 Kawasaki Ninja 250

Joined: Apr 2003
Posts: 2,451
Lafayette, LA
it's the MAF sensor.

It's probably dirty, clean it and change the plugs, viola.

Happened to me, I did guides for both spineyes

To have played and laughed with enthusiasm
and sung with exultation
To know even one life has breathed easier
This is to have succeeded.
Joined: Sep 2003
Posts: 705
SSCarbonGTS
Senior Member
SSCarbonGTS Jun 4, 1:55pm - #191365 

Senior Member
2000 Toyota Celica

Joined: Sep 2003
Posts: 705
Quebec, Canada
Originally Posted by DiabloGTS
it's the MAF sensor.

It's probably dirty, clean it and change the plugs, viola.

Happened to me, I did guides for both spineyes


I second that ! thumbsup

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Mom, I Lost you on April 7th 2004, but I will remember you for ever... I'm missing you
Joined: Jun 2004
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mookie60
New Member
mookie60 Jun 4, 2:24pm - #191366 
1986 White Toyota Celica
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1986 Toyota Celica

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Posts: 4
florida

I'm encouraging my friend to clean it herself, rather than putting up with crap from the dealer. I'll post the results when known.

Thanks to all.
Joined: Sep 2003
Posts: 3,077
slidr
Specialist
slidr Jun 4, 3:27pm - #191367 

Specialist
2000 Toyota Celica

Joined: Sep 2003
Posts: 3,077
Saint Louis, MO
Also, it could be a stick throttle plate, or the throttle body could be obstructed. Spray a little carb cleaner in there, and get in there as far as you can with a rag and wipe it clean.

Also, make sure that all hoses that go to the air box are secured, and make sure that there are no cracks or leaks in them. Your focus should be around the throttle body itself, and the air box. If the MAF sensor was replaced, then perhaps that's not the problem, unless your dealer didn't really replace it.

Aqua Teen Hunger Force...number one in the hood, G
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Solemn
New Member
Solemn Jun 4, 4:47pm - #191368 
2000 Black Toyota Celica
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2000 Toyota Celica

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Posts: 3
NC
what kind of cleaner would be good to clean you MAF?
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Steven
ECelica Staff
Steven Jun 4, 7:49pm - #191369 
2001 Spectra Blue Mica Toyota Celica GTS
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2001 Toyota Celica GTS

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Posts: 3,295
Riverside, CA
electronics cleaner or non-cholorinated (sp?) brake cleaner spray
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