Toyota Diagnostic Test

[Cornish-Glanza]

For a long time now my car has been, for want of a better phrase, pissing me off!!

Only really notice the problem at low RPM (1 to 2.5k) in any gear, the car just has no power, even if you plant it, the car feels like its being held back - I have a steep hill which is quite narrow so its first gear and quite slow, the car wont even make it up the hill anymore, even with my foot hard down in first gear!!
Read a few topics and could possibly be throttle position sensor? - just wondering if a diag test would pick this kind of problem up?

Cheers
J

 

[Starlet_Sam]

Might do, it's worth a try.

 

[Cornish-Glanza]

It is worth a try if you've got money to burn, unfortunately thats not the case for me lol - Don't really wanna waste 50quid if diag tests don't pick up sensor faults....

 

[WallaceGlanza]

Have you done the diagnostics test yourself? It's free!

 

[Cornish-Glanza]

Nah I haven't - I'm electronically challenged

So is that home test you can do the same as the one they do at Toyota? (in principal)

The thing is, the engine management light never comes on so does it only throw up a fault if you have had the EM light on?

 

[Texx]

Is the EM light bulb actually working? Does EML light up when you first put the IGN on?

If its working and the EML hasn't come on, its most likely you have a fault the ECU cant detect.
Have you got a boost gauge fitted?
Are you seeing boost when you experience this issue?
Are you seeing boost/performance at higher engine revs?

 

[Cornish-Glanza]

If its working and the EML hasn't come on, its most likely you have a fault the ECU cant detect. - yes the light comes on and the bulb is working.

Have you got a boost gauge fitted? yes, via a defi link system.

Are you seeing boost when you experience this issue? When the problem occurs the boost gauge goes up to 0 (from -0.8) and then wont go any higher until i hit higher revs.

Are you seeing boost/performance at higher engine revs? Yea, goes fine as soon as you get passed the 'hesitation'

 

[WallaceGlanza]

There's no harm in doing the diagnotstics yourself to see if anything comes up, all you need is a paper clip and to be able to count, I think even you could manage that.

http://www.toyotagtturbo.com/showthread.php?t=290

 

[Texx]

Have you checked the wastegate, a weak spring can cause slow turbo spool times.

A hill and no boost is going to get you no where!

 

[Cornish-Glanza]

It doesn't feel like its mechanically related to me, you can really feel the car holding back as soon as you drop the revs, if i'm driving at say 30-40 in 5th gear and come to a hill and the revs drop down to say 1800rpm - the car feels like its being pulled backwards and the more throttle you give it, the harder the backwards pull is.....

Just sounds an awful lot like throttle position sensor to me?

 

[Cornish-Glanza]

There's no harm in doing the diagnotstics yourself to see if anything comes up, all you need is a paper clip and to be able to count, I think even you could manage that.

http://www.toyotagtturbo.com/showthread.php?t=290

Kiss your rep goodbye!!

 

[Texx]

I'd expect it to throw the light on though if the TPS reading was out of spec.

Is there a tutorial for TPS setup in the resolved section?

 

[Cornish-Glanza]

Yea i did find a nice long instruction manual on here somewhere, but as i say, i'm an absolute noob when it comes to electrics

hmmmmm, ok well it looks like I'll have to take it somewhere.
Cheers Texx and wallace!

 

[WallaceGlanza]

There's some stuff here: http://www.toyotagtturbo.com/showthread.php?t=20762&highlight=setting+tps

and here about it:http://www.toyotagtturbo.com/showthread.php?t=47

Now rep me up baby, or no loving for you!

 

[Cornish-Glanza]

you havent actually solved my problem though have you? ...... useless!!

but seeing as it's you...

 

[WallaceGlanza]

Lol No I am pretty useless really, well hope you get it sorted!