Car start problem - Toyota Yaris Forums

jorizk · 04-21-2010, 03:17 PM

Hello fellow Yaris owners,

I've had my Yaris for three years and a half now. Two days ago I got into the car. It was 5 pm, the weather was fairly warm, and I hadn't used the car since 11 am.

When I started the car, the rpm went on 1500 like it used to do, and in two seconds it dropped to 300~400, the car started to shake for a little bit like it was choking, and then the rpm went back on 1100 approx, but the needle was pulsing to ~1400 every half a second, and the pulsing stayed for a minute, even when the rpm dropped to 800. The car was on park all the time. When I put it on drive, I felt the pulse effect for the first 500 meters, when the gas pedal was slightly pressed, like it can't accelerate as it normally does and after that when it picked up speed everything disappeared. The car was behaving normally on the road, even when coming at full stops.

This thing happened to me three times before, but it's the first time the rpm drops like this. What do you think is the problem? I've changed the spark plugs and the air filter recently.

Thanks in advance:)

weaver615 · 04-21-2010, 05:24 PM

What plugs did you use. In my research i am finding that the Bosch Premium Class Platinum+4, work the best on the Yaris. if you bought the cheap plugs from A Wal-Mart like store that is probably your problem. Goto an AutoZone, or Advanced Auto or even a NAPA like store and get a good set of plugs. That is probably the problem. BTW, be sure they are gapped correctly too.

127.0.0.1 · 04-21-2010, 07:25 PM

dirty MAF

jorizk · 04-22-2010, 10:11 AM

Thanks people :-)
And could it be the fuel pump or the fuel filter?

127.0.0.1 · 04-22-2010, 11:26 AM

Quote:

Originally Posted by jorizk

Thanks people :-)
And could it be the fuel pump or the fuel filter?

it could be, but it is most likely the MAF. I highly doubt it is the plugs.

yaris-me · 04-23-2010, 01:56 AM

Quote:

Originally Posted by jorizk

Thanks people :-)
And could it be the fuel pump or the fuel filter?

Run a good fuel system cleaner. That should clean out the fuel lines and fuel injectors. That's fuel sytem cleaner.

RacerFreakXXX · 04-23-2010, 08:05 AM

I've had this happen once or twice to me too. I reved the engine a few times and then turned it off and it started back up fine. I've noticed if I let the fuel pump kick in before I start the car, by turning the key all the way w/o actually starting it, I have never had that problem.

jorizk · 04-23-2010, 10:55 AM

Okay thanks a lot dudes !

RacerFreakXXX · 04-24-2010, 12:29 PM

I forgot to add you should let the key sit in that on position for 10-15 seconds before starting the car.

Yaris Hilton · 04-24-2010, 06:49 PM

It's not the plugs. Cheapo plugs will work just fine if they're properly gapped. They just don't last as long as the platinum or iridium ones.

jorizk · 04-25-2010, 03:38 AM

Well guess I have to replace the MAF.. and the air filter and the radiator and the front bumper and the hosing.. and the airbags. Lost control on a tight turn, almost fell off a cliff if it weren't for the tree I hit.. Drive safe people !

AbsolutelyRed · 04-25-2010, 10:56 AM

Quote:

Originally Posted by jorizk

Well guess I have to replace the MAF.. and the air filter and the radiator and the front bumper and the hosing.. and the airbags. Lost control on a tight turn, almost fell off a cliff if it weren't for the tree I hit.. Drive safe people !

Wow, hope you are ok...

Yaris Hilton · 04-25-2010, 01:48 PM

That was a well placed tree!

jorizk · 04-26-2010, 04:31 PM

The only tree on a 1 KM long side road. It couldn't have been placed better !

1NZYaris1 · 04-26-2010, 06:36 PM

Well i guess it's safe to say your not a Greeny

the only tree in 1km and you have to pick on it

04-21-2010, 03:17 PM	#1
jorizk Drives: Yaris 2006 1.5 L Sedan Join Date: Jul 2009 Location: Lebanon Posts: 19	Car start problem Hello fellow Yaris owners, I've had my Yaris for three years and a half now. Two days ago I got into the car. It was 5 pm, the weather was fairly warm, and I hadn't used the car since 11 am. When I started the car, the rpm went on 1500 like it used to do, and in two seconds it dropped to 300~400, the car started to shake for a little bit like it was choking, and then the rpm went back on 1100 approx, but the needle was pulsing to ~1400 every half a second, and the pulsing stayed for a minute, even when the rpm dropped to 800. The car was on park all the time. When I put it on drive, I felt the pulse effect for the first 500 meters, when the gas pedal was slightly pressed, like it can't accelerate as it normally does and after that when it picked up speed everything disappeared. The car was behaving normally on the road, even when coming at full stops. This thing happened to me three times before, but it's the first time the rpm drops like this. What do you think is the problem? I've changed the spark plugs and the air filter recently. Thanks in advance:) Last edited by jorizk; 04-21-2010 at 03:42 PM.

04-21-2010, 05:24 PM	#2
weaver615 Drives: '07 Yaris 3DRH Join Date: Mar 2010 Location: New York Posts: 46	What plugs did you use. In my research i am finding that the Bosch Premium Class Platinum+4, work the best on the Yaris. if you bought the cheap plugs from A Wal-Mart like store that is probably your problem. Goto an AutoZone, or Advanced Auto or even a NAPA like store and get a good set of plugs. That is probably the problem. BTW, be sure they are gapped correctly too. Last edited by weaver615; 04-21-2010 at 05:38 PM.

04-26-2010, 06:36 PM	#15
1NZYaris1 View User's Garage Drives: Yaris Join Date: Oct 2008 Location: New Zealand Posts: 2,566	Well i guess it's safe to say your not a Greeny the only tree in 1km and you have to pick on it __________________ http://www.microimageonline.com/forums/index.php

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04-21-2010, 07:25 PM	#3
127.0.0.1 Banned Drives: '10 Yaris5drHB+99 4runner LTD Join Date: Sep 2009 Location: NE Posts: 672	dirty MAF

04-22-2010, 10:11 AM	#4
jorizk Drives: Yaris 2006 1.5 L Sedan Join Date: Jul 2009 Location: Lebanon Posts: 19	Thanks people :-) And could it be the fuel pump or the fuel filter?

04-23-2010, 08:05 AM	#7
RacerFreakXXX JDM Fred View User's Garage Drives: 06 Mazda Miata Join Date: Oct 2008 Location: Somers NY Posts: 787	I've had this happen once or twice to me too. I reved the engine a few times and then turned it off and it started back up fine. I've noticed if I let the fuel pump kick in before I start the car, by turning the key all the way w/o actually starting it, I have never had that problem.

04-23-2010, 10:55 AM	#8
jorizk Drives: Yaris 2006 1.5 L Sedan Join Date: Jul 2009 Location: Lebanon Posts: 19	Okay thanks a lot dudes !

04-24-2010, 12:29 PM	#9
RacerFreakXXX JDM Fred View User's Garage Drives: 06 Mazda Miata Join Date: Oct 2008 Location: Somers NY Posts: 787	I forgot to add you should let the key sit in that on position for 10-15 seconds before starting the car.

04-24-2010, 06:49 PM	#10
Yaris Hilton Half a Bubble Off Plumb Drives: 2009 Yaris Sedan Join Date: Mar 2009 Location: Bristol, Tennessee, USA Posts: 1,593	It's not the plugs. Cheapo plugs will work just fine if they're properly gapped. They just don't last as long as the platinum or iridium ones.

04-25-2010, 03:38 AM	#11
jorizk Drives: Yaris 2006 1.5 L Sedan Join Date: Jul 2009 Location: Lebanon Posts: 19	Well guess I have to replace the MAF.. and the air filter and the radiator and the front bumper and the hosing.. and the airbags. Lost control on a tight turn, almost fell off a cliff if it weren't for the tree I hit.. Drive safe people !

04-25-2010, 01:48 PM	#13
Yaris Hilton Half a Bubble Off Plumb Drives: 2009 Yaris Sedan Join Date: Mar 2009 Location: Bristol, Tennessee, USA Posts: 1,593	That was a well placed tree!

04-26-2010, 04:31 PM	#14
jorizk Drives: Yaris 2006 1.5 L Sedan Join Date: Jul 2009 Location: Lebanon Posts: 19	The only tree on a 1 KM long side road. It couldn't have been placed better !