Toyspeed.org.nz Message Board

by **FLESHAXXE** » Thu Oct 08, 2009 5:08 am

Recently my 20v levin has been idleing between 1100-780rpm.....during normal driving it's ok but as soon as I go hard on the throtle it is "bogging down" like if it's starving for fuel.....I have tried a gas treatment by Prestone recently and this has not helped....I was also using shell gas ....is anyone familar with this problem....Thanks..

Website · by **Rick** » Thu Oct 08, 2009 6:13 am

Try searching 20v hesitating, some blacktops seem to suffer from it.

by **headshotnz** » Thu Oct 08, 2009 3:10 pm

my silvertop has done this since i owned it. i got used to it...

Website · by **Bling** » Thu Oct 08, 2009 3:26 pm

What fuel you running? run 98

by **FLESHAXXE** » Fri Oct 09, 2009 4:25 am

over here we realy don't know........all I can tell you it's shell vpower ......

by **FLESHAXXE** » Fri Oct 09, 2009 4:28 am

We really don't know but I think it's around 92........I'm planning on taking out the gas pump and inspecting the fuel tank and the filter......

by **BigDon** » Fri Oct 09, 2009 8:41 am

Potentially a O2 or knock sensor issue, which are common problems that cause this. Have you checked the fault codes?

by **sergei** » Fri Oct 09, 2009 8:46 am

FLESHAXXE wrote:over here we realy don't know........all I can tell you it's shell vpower ......

on side note vpower is such a joke, I wouldn't ever put in a ferrari if I had one. It is same regular 95, has nothing special about it.

Try using 98, and see if it helps.

by **Mr Revhead** » Fri Oct 09, 2009 8:47 am

FLESHAXXE wrote:over here we realy don't know........all I can tell you it's shell vpower ......

where are you?

by **wishihadaTE27** » Fri Oct 09, 2009 11:40 am

oz id guess.

by **Mr Revhead** » Fri Oct 09, 2009 11:42 am

ah, old posts sat barbadoes.
which means your fuel is prob american, or using american ratings
which measn your 92 is not the same as 92 here, it will be close to 96

by **FLESHAXXE** » Sat Oct 10, 2009 6:38 am

I will try changing the Knock Sensor and see what happens.....Barbados is where I'm at.....Thanks guys...I will let you know what happens....

by **rollaholic** » Sat Oct 10, 2009 7:07 am

i would check the fault codes before changing anything

by **MAGN1T** » Sat Oct 10, 2009 7:34 pm

Your best bet would be to hook up a voltmeter to the oxy sensor and take a note of what readings you get Is the back of the car sooty looking?

Steve

by **96bzg** » Sun Oct 11, 2009 5:01 pm

hay i have the same problem i only norm get it between 2-3 grand and have only got it since new exhaust back of exhaust is soty what does that mean do i needa get new oxy sensor ?

by **RS13** » Mon Oct 12, 2009 12:28 am

Check fault codes.

by **nmcgowan** » Mon Oct 12, 2009 2:52 pm

Have a look through my posting. It has a number of different things you could look at, my problem ended up being a failing fuel pump that couldnt hold pressure reliably.

http://forums.toyspeed.org.nz/viewtopic.php?p=744698#744698

It's likely it will boil down to one/some of these being the cause but always check for trouble codes first as that can tell you almost straight away if its a sensor thats at fault.

In no order of preference.....

1) Worn Distributor rotor or cap.
2) Air Flow meter (ST) or MAP Sensor (BT)
3) O2 sensor.
4) Water temp sensor.
5) Faulty ECU - quite common for capacitors to leak.
6) Fuel related issue i.e. clogged filter, fuel pressure (pump), injectors etc
7) Broken or faulty plug leads and/or plugs.
8. Starter signal wire to ECU.
9) Vaccuum leak.
10) Faulty ignitor or coil.
11) Bad earth.
12) Timing is wrong or belt has jumped a tooth.

red car · by pc » Mon Oct 12, 2009 5:41 pm

TPS faulty?

by **96bzg** » Tue Oct 13, 2009 7:25 pm

hmm i have new trd leads and have just brought new plugs to see if it was that also have new fuel filter that will be going in dis weekend hopefully that fixes it otha wise ill av to get som one to look at it and im really fussy on who i let touch the car as have had rummys b 4 ....

by **96bzg** » Tue Oct 13, 2009 7:26 pm

what do you mean trouble codes how do you check them ?

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20valve bogging down on hard throtle ....

20valve bogging down on hard throtle ....

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