Toyspeed.org.nz Message Board

by **XSVWGN** » Tue Jul 11, 2006 1:58 pm

hey guys and gals my 4agze idels fine and timing on crank pulley and crank angle sensor is all good but the car wont rev over 2500. The ecu has been replaced aswell as the Throttle Possition Sensor but no joy. AFM is fine with no problems also....

im no mechanic so ca someone point me in the direction of what can be wrong?

Matt

027 459 0038

by **aesc** » Tue Jul 11, 2006 2:00 pm

Does the engine check light come on when you rev over 2500? Could be a knock sensor problem

by **XSVWGN** » Tue Jul 11, 2006 2:02 pm

yea it has once or twice...

by **RedMist** » Tue Jul 11, 2006 2:25 pm

Sounds like the cam belt has jumped a couple of teeth. Check cam timing. If its the exhuast cam that has jumped this will also screw with your ignition timing.

by **CAMB01** » Tue Jul 11, 2006 8:19 pm

Ive been and had a look at it and the cam timing is spot on.
To me it seems electrical, ignition timing is good as well.

by **gepsk8** » Tue Jul 11, 2006 8:23 pm

are the plugs? leads? good condition? what the fuel pressure like?

by **Kender** » Tue Jul 11, 2006 11:53 pm

It's a lack of fuel. You have sufficient fuel to feed the engine at idle, but not when you ask it to do more work. Check the fuel filter/fuel pump.

by **XSVWGN** » Wed Jul 12, 2006 1:34 am

hey the fuel filter is brand new and the fuel pump is a standard one for the wagon. The leads are in good condition and the plugs are new also...

... so the fuel pump could be the problem? i have had problems with it before. It was only reading 0.4v!!! so a mate rewired the pump to the ignition.

conclusion being fuel pump? ... whilst ideling its all good and timimg is all good but once you blip the accelerator it almost dies...

by **Crucible** » Wed Jul 12, 2006 8:19 pm

Process of elimanation

Check injector pulse, are they still pulsing when it dies? If your check light is coming on it normally points to a faulty sensor or wiring to a sensor, It may be going into fail safe? you may need to bring up the fault codes and sort any problems there before going any further.

if ok then check your fuel pressure, I have a efi tester you can borrow tap in and make sure there isnt any problems there. If thats ok then all you can do is run a test plug on one of the leads and check for spark when it dies.

If you dont have any joy I can recommend a couple of good mobile sparkys we use that can come have a look and put you on the right track.

sweet

by **Kender** » Thu Jul 13, 2006 2:09 am

XSVWGN wrote:whilst ideling its all good and timimg is all good but once you blip the accelerator it almost dies...

I'm going to stick with my opinion of lack of fuel. The fump may be faulty, or simply clogged. The fuel pump pickup tube on my MR2 kept getting blocked, and I had to remove and clean the fuel tank to stop it recurring.

I assume you haven't done something as simple as replacing the hollow bolt in the top of the efi fuel filter with a solid bolt :wink:

Don't laugh, I've seen that one before :lol:

by **Psycho_Dad** » Thu Jul 13, 2006 8:33 am

does it happen when th car comes onto boost at low revs too?

Peace
Psycho_Dad

by **XSVWGN** » Thu Jul 13, 2006 4:15 pm

i havent got the relay on for the supercharger wired up yet

by **gepsk8** » Thu Jul 13, 2006 7:32 pm

need a flow tester tho not a pressure as it could still have good pressure just no flow.

by **matt dunn** » Thu Jul 13, 2006 11:32 pm

XSVWGN wrote:i havent got the relay on for the supercharger wired up yet

Um, so why the hell are you treying to get it to go?

If the supercharger wont work, and the ABV shuts off when the supercharger is meant to come on,

How the hell is the engine going to get any air????

by **Crucible** » Fri Jul 14, 2006 2:53 pm

matt dunn wrote:
XSVWGN wrote:i havent got the relay on for the supercharger wired up yet

Um, so why the hell are you treying to get it to go?

If the supercharger wont work, and the ABV shuts off when the supercharger is meant to come on,

How the hell is the engine going to get any air????

ohhhhh dude lol, that would be your problem right there brother!!

by **Mr Revhead** » Sat Jul 15, 2006 10:35 am

maybe......
but i have known ppl to unplug the charger and drive it home ok.....
but if all pipes are hooked up properly then the ABV will be open in that case.

i also know ppl who do away with the ABV and have no issues. so i dont think the s/c not turning is the issue.
enough air gets past the lobes to let the engine run.

by **Crucible** » Sat Jul 15, 2006 12:49 pm

Yeah Actually come to think of it, I have run my old gtz once with the s/c plug disconnected, it was flat but it still reved normally.

yeah your right Mr Revhead, it will still run ok....just no boost

by **Mr Revhead** » Sat Jul 15, 2006 12:53 pm

yeah and oh man do they feel flat with no boost

by **matt dunn** » Sat Jul 15, 2006 3:23 pm

but it poses the question,

what else is missing??

by **Mr Revhead** » Sun Jul 16, 2006 12:12 am

yes it does....

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4agze wont rev over 2500?

4agze wont rev over 2500?

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