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#1
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Engine, Electrical Problems
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 |
#2
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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/
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#3
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what a day
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 |
#4
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Time to remove the throttle body and clean it and the idle air control motor.
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#5
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Quote:
Thanks |
#6
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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.?
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#7
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Quote:
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#8
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#9
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Try swapping 2 injectors to see if the problem follows the injector.
__________________
David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#11
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_________ttt_______
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#12
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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. |
#13
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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.
__________________
David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#14
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Quote:
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. Last edited by SvXSubaru92; 08-17-2005 at 09:26 PM. |
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