Question about Toyota Celica

1 Answer

I have a 2001 Celica with the 1.8 liter 1zzfe engine with vvti. At a steady 3000 rpm on a flat road, the car seems to surge. Not violently, but a continuous up and down surging. Why?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

The Mass Air Flow sensor (MAF) was dirty. I took it out and cleaned it with Electrical Contact Cleaner until the tiny wires were shiny, put it back, and it was fixed. Be sure and disconnect the negative battery terminal, so that the ECM reprograms itself when the cable is hooked back up. Do not touch the tiny wires in the MAF, as they will break, and a new sensor is $200 or so.
The MAF should be cleaned every year, and every time the air filter is replaced.

Posted on Jul 25, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Car surging


Is the car equipped with the Automatic Transmission?
If so, read on.
Otherwise skip to the end and answer some questions.

POSSIBLE SCENARIO:
I have observed a condition where my car surges slightly when the torque-converter clutch (TCC) cycles between lock and unlock when driving on an uphill grade.
First some basics and history that will explain why the TCC is used.

Engine, Torque Converter, TCC, and Transmission relationship--
The TCC allows for a solid connection between the engine and transmission which allows the input to the transmission to rotate at the same speed as the engine.
Without a TCC, there is slippage between the engine and automatic transmission. The slippage is greatest at low engine RPM. That is what allows the engine to run with the automatic transmission in gear, like when you first shift into gear or stop at a stop sign. When the throttle pedal is depressed, the engine RPM begins to increase and the torque converter begins to slip less and less the more the engine RPM increases. The car moves. But even at cruising speeds the torque converter slips slightly. Engine RPM is greater than transmission input RPM, which is realized as slight decrease in fuel efficiency.
When acceleration is complete and a constant speed is being maintained, the engine power output is reduced to the point where the TCC can engage and eliminate any slippage between the engine and transmission. If the car has a tachometer the engagement of the TCC can be verified when a slight reduction in engine RPM observed without a corresponding change in vehicle speed.
One method used to test the operation of the TCC is as follows:
Find a flat section of road where it is safe to perform the test.
Reach a steady speed and keep the gas pedal depressed with one foot. While observing the tachometer (or listening for an increase in engine RPM), with the other foot depress the brake pedal enough to activate the break light switch but not enough to engage the brakes. When the brake light switch activates, the TCC receives a signal to disengage. With the gas pedal being held steady, release the brake pedal and the engine RPM should decrease when the TCC engages.
Old cars with Automatic Transmissions did not use a TCC. I believe the TCC was put in use in an attempt to increase fuel economy.

MY EXPERIENCE WITH SIMILAR SYMPTOMS
The condition that causes that issue on my car is this:
- A slight uphill grade increases the load on the engine.
The car tends to gradually slow and it is necessary to depress the gas pedal to maintain speed.
- Depressing the throttle pedal (manually, or automatically with cruise control engaged) signals the torque converter clutch to unlock when the load increases slightly. (A more drastic load increase would signal the Transmission to downshift to a lower gear.) The corresponding increase in engine RPM and output is enough to compensate for the reduction in speed. When the vehicle speed, engine RPM, and throttle position stabilize to the point that the TCC will engage and the engine RPM will reduce in correspondence with TCC engagement. Now, if the road conditions have not changed, power output is not enough to maintain vehicle speed. With the increased load caused by full engagement between engine and transmission, and the cycle (surging) repeats itself until the road conditions change.

Does that help?
If not:

QUESTIONS
Please define the symptoms.
What are the road conditions when the surge occurs? (A slight uphill grade?)
What is the frequency of the surge?
Does the engine power output have a noticeable surge?
Is there a speed change related to the surge?
Does the tachometer move up and down with little or no change in vehicle speed?
Are all instrument indication in the normal range?
What else has changed?

Good luck!

May 24, 2014 | Subaru Impreza WRX STi Cars & Trucks

2 Answers

2001 buick century if throttled up at the engine runs great but if throttled up by the throttle pedel it begins to surge


This car should have a throttle positioning sensor. Have you had the codes run on your vehicle. Free at most local auto parts centers

Aug 11, 2012 | 2001 Buick Century

1 Answer

My 2001 celica vvti power steering whins when cold


This could be caused by dirty or over-aged power steering fluid, it's not flowing enough when the engine is cold (so the fluid) lack of enough fluid flowing through power steering pump can cause the power steering pump to start whining. Change the fluid and you should be good. Hope it helps and please don't forget to rate the answer if it was helpful, it helps me, thanks!

Mar 23, 2010 | Toyota Celica Cars & Trucks

1 Answer

Would appreciate some expert opinion. The car is a 1992 Mazda Astina Manual. It has been superbly maintained but suffers a violent shaking problem. This only happens when - a. the car is starting to move...


well ,clutch plate sprngs broken ----maybe ,
pressure plate fingers uneven tention---possible
engine mounts areal possiblity BUT i think i would go for the clutch plate and check the others whilst doing it

Nov 10, 2009 | Mazda 323 Cars & Trucks

3 Answers

Celica oil consumption


Try cleaning your engine with an engine flush such as AMSOIL engine flush and then draining your oil once the flush is complete. It will clean the interior of the engine and drain out the contaminants. Once this has been perfomed replace the old oil with completely synthetic AMSOIL or Mobil 1. These oils are know for there ability to clean an engine and to reduce the chances of sludge formation in toyota engines. This is a good place to start before you go spending thousands on a new engine!!

Oct 15, 2009 | 2002 Toyota Celica

1 Answer

2004 hyundai elantra that surges violently 1000 rpm to 4000 rpm


could be afew things. vacuum leak, one dud HT lead, could be the water temperature sensor, O2 sensor, best to get it checked and get it read for fault codes

Sep 03, 2009 | 2004 Hyundai Elantra

1 Answer

2001 Toyota Celica GT RPM surging at Idle


Certainly sounds like the o2 sensors have become contaminated and are not acting as fast as they used to , or are supposed to.

Apr 24, 2009 | 2001 Toyota Celica

1 Answer

Transmission problem on 2001 Celica GT Auto Trans - how can I fix this?


I am glad my solution provided you with happiness. A gift, no, you do not need to do that. I appreciate the thought, though. The graciousness of a "FixYa" rating regarding my helpfulness would be GREATLY appreciated. That I all that I need form you. A happy Client. THAT is what FixYa is ALL ABOUT. Have a great week. Thanks again.

Nov 14, 2008 | 2002 Toyota Celica

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

296 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

64052 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...