96 tracker, usa, calif, or real canada e28 tracker?
read my bad idle page.
Originally Posted by Tracker man
Hello to everyone, I have been reading here for awhile but decided I needed to be a member.
first off idle is only a symptom, and is usually not bad idle controls but bad engine, spark or fueling.
First I have been trying to fix an high idle (around 1500 rpms warm) on my 96 16v tracker for about an week now.
i added key words to your post.... so...
Next is a list of what I have tried to solve the problem. I have no CEL (running but lamp works) and the vehicle runs very well besides the high idle.
very good input, runs well. !! thanks.
I have did a tune-up besides? a new cap and set the timing to specs. I have cleaned the ISC and EGR valve and checked for vacuum leaks. The only part I haven't cleaned is the IAC (under the tb) but this may be my next step.
I have done the stall test on the EGR and it will kill the motor so I assume it's good.
Now for the test that I don't understand my results is the ISC pinch test.
When I pinch the ISC air line it makes no change (its bad)
but when I cleaned it the coil had 13 ohms and could watch it move. (try 12vdc and see if it moves, see my video on that. 1 second 12v rest for 10 sec, repeat)
I think I have a vacuum leak or problem but can't find it (used carb cleaner) with no rpm change.
the 16v has VAST leaks potentials, intake valves all the way to the MAF, all leaks hot, net lean, and bogging and bad idle (low) all hoses, even the main induction hose (pipe) MUST NOT LEAK any air what so ever. (in our cars, we see it leak with the scan l)
I do have a question about the little 90 that comes out of the top of the tb? 90?
be more clear on parts touched or removed. you do know the 16v , you must ever pull any hoses or it goes LEAN pronto , right?
dont do that.
When I remove this line I get no vacuum is this normal, (yes) because the two lines toward the front (the ones that go to the vss I believe) of the intake has plenty of vacum.
I can see you think the 8v works like a 16v they are totally alien to one another, your ECU measure AIR FLOW (mass in USA) and is not vacuum sensed injection , like 8v its air flow sensed
so you you breach the path, you just made a huge mistake,its not a 8v at all../
only lines below the throttle plate suck 19 inches of vacuum
above the throttle plate (butterfly) only a tiny bit of air flows and no discurnable vauum at idle, in fact air does flow and the MAF ,not VSS measure this exact air flow at idle, at all times.
Since this is an open cavity I dont understand why I don't have vacuum at the ISC or the little 90 on top of the tb. I believe I have an vacum problem but cant prove it yet.Thanks for any advice or help in advance.
im not sure what 90 means...... if only you said......
the 16v has a side draft TB,
it has a huge pipe, to the MAF , this pipe and all sub pipes must be 100% NOT CRACKED in any way , (close inspections here, will solve that travesty in this air density system.
The ISC not sucking , this is easy,
its stuck closed
the ports are blocked
the ISC is being commanded close, but the huge air leak (in the plenum) prevents the ISC from sucking air.
if the ECU closes it 100% and the idle is too high, it can not close it more, its closed now 100%
to prove this , just remove the isc connector (do not force any locked connectors, do NOT) use the unlock tab, suzuki does not sell this part. (conn)
then you see that the idle is still too fast, right? that is because the spring in the ISC closed it,, you say that as you cleaned it. and stroked it as you cleaned, it.
now with motor idling, way too fast , apply 12vdc just to the ISC only.
bang, huge 400 rpm rise,, do so only for 3 second max , as not to overheat the ISC coil,, its rugged but do not leave 12vdc full time on this part.
so now you know the ISC works
it closes, (can the air line is dead)
it opens and screams
so , you know know the plenum has a breach, for sure.
that was easy so far, right?
my bad idle page covers an easy test if the IAC,
using clay or duct tape.
you breach the TB horn Tube. (pull it)
then block the iAC rectangular port, inside the air horn.
then un-breach the induction, as you must never run the car breached.
off my bad idle index page for
here is the 96 usa tracker page ON TOPIC
what to do on any 96 (no scan tool , right. and sadly)
make sure no air leaks in that huge pipe on top. nor its sub pipe (PCV hose, nor the other near it)
the maf needs to read the correct volts for idle , per my maf page (has fsm quotes and my tests)
make sure all hoses, are routed like the underhood vacuum map shows!
inspect all vacuum hoses for cracks and blockage, and all nipples to same, that the vacuum sources all still suck at idle)
my page, shows, you blocking all normal air paths, these are called legal air.
the bleed screw
the closed throttle. it is 99.9% closed at idle and must never be re-adjusted (see screw blocking device stopping mr. PO (mad))
the IAC must be closed and water must be over 150f and for sure 180f and holding, if the valve dont close ad 158f, its BAD !
the iSC must open and close under power and close with no power.
if the idle is still high with those normal paths blocked, you have a huge plenum leak.