Engine, Electrical Problems

[SvXSubaru92]

Hi all, I'm 17, and my dad is helping with this project. I'm new to this forum, We have a 92 Svx. We recently had to fix the camshaft becuase the slot for the pully was damaged, (Picture . We got this machined and I put it in yesterday, IT RUNS! First time we ever heard it.

The problem is
1. The car would idle fine (like on all cylinders), and then it would idle down, and barely ran (like it wasnt on all cylinders). But when it ran bad, the check engine light came on, about 5 seconds later, it dissapeared and ran fine. What could be the problem? I'm going to check the spark plugs and ignition coils (how do I check resistance?)

Thanks

[Earthworm]

Before you do anything else you can check the engine code that was produced to give you an idea of what's wrong.

Instructions for checking codes can be found in the SVXipedia on http://svx-iw.com/

[SvXSubaru92]

Ok, I replaced the plugs and air filter anyway. I checked the code, 24, bypass air control valve. So I take off the TB, take off the air control valve, clean it, put it on still runs the same as before but check engine isnt coming on, I have recorded how it runs. Here is an explanation of what is happening in this Sound clip I recorded

Engine starts
Idles low and rough
Rev to 3000, let off gas
Idles automatically at 2000 for about 3-4 seconds
Idles rough at about 500, almost stoping
Rev to 3000 again
Idles at 2000
Goes down to below 500 where I just stoped it manually.

Sometimes it barely runs that all the dash lights come on like before you start the car. When it is struggling to run there is a ticking noise, it sounds like it might be the control valve, but it sounds like a valve or lifter. Any help is GREATLY appreciated. Thanks

Slawek

[Beav]

Time to remove the throttle body and clean it and the idle air control motor.

[SvXSubaru92]

Originally Posted by Beav

Time to remove the throttle body and clean it and the idle air control motor.

Is the throttle body just the part with the valves(that let air in, 6 screws)? Becuase I had it off, and cleaned it, along with the air control valve, I left that magnetic motor alone. Maybe I have to replace that magnetic motor, you tell me, lol. Did you listen to the audio clip?

Thanks

[Beav]

Sorry, I missed that. There is another idle valve, separate from the t-body, that idles up the engine when cold. Look under the left side of the intake (left & right are always from the driver's seat.) Once warmed up does the engine idle o.k.?

Originally Posted by SvXSubaru92

Ok, I replaced the plugs and air filter anyway. I checked the code, 24, bypass air control valve. So I take off the TB, take off the air control valve, clean it, put it on still runs the same as before but check engine isnt coming on, I have recorded how it runs. Here is an explanation of what is happening in this Sound clip I recorded

Engine starts
Idles low and rough
Rev to 3000, let off gas
Idles automatically at 2000 for about 3-4 seconds
Idles rough at about 500, almost stoping
Rev to 3000 again
Idles at 2000
Goes down to below 500 where I just stoped it manually.

Sometimes it barely runs that all the dash lights come on like before you start the car. When it is struggling to run there is a ticking noise, it sounds like it might be the control valve, but it sounds like a valve or lifter. Any help is GREATLY appreciated. Thanks

Slawek

that sounds like my car like a year ago, the last time it ran :-(, also, the bug sounds in the backround sound like the bug sounds here

[SvXSubaru92]

Originally Posted by Liquor Assassin

that sounds like my car like a year ago, the last time it ran :-(, also, the bug sounds in the backround sound like the bug sounds here

Was yours drivable?, becuse I can drive mine, but its slowwww. I hope its curable. Nothing mechanical could cause this, I'm just gona wait for the computer to adjust, and learn!.

[Earthworm]

Try swapping 2 injectors to see if the problem follows the injector.

[SvXSubaru92]

I recorded a video(of my svx problems) if anyone is interested at all, or bored.

[SvXSubaru92]

_________ttt_______

[msvx95]

Did you play with the throttle cable and reduce the slack in the cable? I had mine too tight once and my idle was above 2000 for awhile until I added a minor amount of slack back into the cable to bring the rpms down.

But I can't answer why it would be a higher idle after driving it for awhile.

[Earthworm]

If you've been cleaning/adjusting things your idle may get messed up for a few run cycles. It will return to "normal" after it re-learns.

[SvXSubaru92]

Originally Posted by Earthworm

If you've been cleaning/adjusting things your idle may get messed up for a few run cycles. It will return to "normal" after it re-learns.

I hope thats the problem, but it still idle's rough.

I still think its wierd that when I unplug an injector wire, there is no difference in engine speed, only one of the 6 injector cables being disconnected will cause the engine to die, wierd? Or is this normal? And then engine revs SLOW, from 1200 to 3000, half throttle, probably around 10 seconds. Are there any hidden vacuum hoses that aren't clearly visibile that might be bad?

I've done this stuff to the car since i've got the cam in:

Cleaned TB
Cleaned some valve thing (forgot name) under the TB
Cleaned the auxillary bypass valve
Cleaned EGR valve
Changed spark plugs
Changed Air filter
Soaked MAF in vinigar
Replaced TPS (throttle pos sensor)
Timing is correct


School starts soon so I'm going to take it to our shop and see what the teacher has to say, one of them has an outback, maybe he'll know something.