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1997 vitara
#13
(10-04-2020, 09:48 AM)1972 Wrote: So i disconected fuel lines blew compressed air thru all good, did a visual check on the fuel lines all good. took fuel cap of and started car no change. so then i disconected maf plug car still ran the same. pulled the plug of tps and the revs increased slightly and idled like it should, i reved it and the engine also reved like it should. Does this mean my problem is with the tps, can you repair the tps or just replace it. thanks
you need to learn to use a volt meter
each device you Removed, causes ECu to go to limphome mode,  (anY missing or dead deviCE) EMULATION.

WHY not test the MAF first, even clean first.
the output test. MAF.
1,2,3
1: key on voltage
2: idle
3: gunning the throttle test.
per my maf page,  this same page shows what the FSM book shows  how to do that. it is super easy tests this, simple voltages.

unplugging the TPS forces TPS emulation mode.  a very very crude mode.
KEY ON TPS OUTPUT IS 1V.  GOES TO 4volts at full throttle.  
The TPS is only for enrich  mode,  fast right foot.
the MAF sets power, it measures  air flow and matches fuel rates to that air flow, in real time all the time. It is a key sensor for (HP) power, this sensor.
the Engine makes power from Air and fuel,  both, MAF working right allows the ECU to inject fully even at WOT,  if not there will be no power from engine full.


my pages show the ohms test for ECT and voltage to, read them  and is super simple voltmeter checks.

are you sure it is flooding and rich and not just simple fuel starvation?  they dead opposites.
like I told you MAFs like to go weak and that means lost of engine power.
all shops clean it first, to DE-coke it.  did you, ?  if filthy it will read low and low engine power the results.

Are you not reading spark tips (spark plug tips speak to you) for sure if lean or rich. 
when you unplug the MAF the ECU sets DTC for MAF death, and uses the TPS to EMULATE the DeAD maf.  that is what limphome does, emulate dead sensors.
so engine still runs,  and wanted. (not getting stranded)
it is really easy to get fooled you do not underand these basic facts of limphome and emulation of dead sensors.
it can send you on the wrong track.

let me give 1 example.
fuel pressure way to low,  mech blind to this fact.

he pulls the MAF , it goes to emulation mode (means goes super rich LIMP mode) and hides the low pressure, effects whole or in part.
fooling him in to thinking MAF is dead,  see?

to fix cars like that lacking  real scan too  the mech, needs to learn to use the FSM book and the voltmeter.
to test all sensors.


1996 , USA we scan the sensors and like magic all that data is on my screen, ever sensor reading LIVE even up hill wide open throttle ,dig?
but no you., there is no oBD2 here.
so you must work harder Meters and gauges. both.
Testing each sensor by hand (manual testing)   fuel pressure too. ECU can not run right with wrong fuel pressure,

my best guess so far, is
bad sensors. or fuel pressure wrong.
engine is ok,  so... its EFI problem
http://www.fixkick.com
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Messages In This Thread
1997 vitara - by 1972 - 10-01-2020, 11:35 AM
RE: 1997 vitara - by fixkick - 10-01-2020, 09:22 PM
RE: 1997 vitara - by fixkick - 10-01-2020, 09:38 PM
RE: 1997 vitara - by fixkick - 10-01-2020, 09:53 PM
RE: 1997 vitara - by fixkick - 10-01-2020, 10:10 PM
RE: 1997 vitara - by 1972 - 10-02-2020, 10:36 AM
RE: 1997 vitara - by fixkick - 10-02-2020, 09:49 PM
RE: 1997 vitara - by fixkick - 10-02-2020, 10:09 PM
RE: 1997 vitara - by 1972 - 10-02-2020, 10:38 PM
RE: 1997 vitara - by fixkick - 10-02-2020, 11:31 PM
RE: 1997 vitara - by fixkick - 10-02-2020, 11:39 PM
RE: 1997 vitara - by 1972 - 10-04-2020, 09:48 AM
RE: 1997 vitara - by fixkick - 10-04-2020, 11:42 AM
RE: 1997 vitara - by 1972 - 10-04-2020, 10:27 PM
RE: 1997 vitara - by fixkick - 10-05-2020, 02:51 AM
RE: 1997 vitara - by fixkick - 10-05-2020, 03:04 AM
RE: 1997 vitara - by 1972 - 10-05-2020, 09:05 AM
RE: 1997 vitara - by 1972 - 10-05-2020, 09:11 AM
RE: 1997 vitara - by fixkick - 10-06-2020, 09:46 AM
RE: 1997 vitara - by 1972 - 10-06-2020, 08:10 PM
RE: 1997 vitara - by fixkick - 10-06-2020, 09:16 PM
RE: 1997 vitara - by 1972 - 11-06-2020, 09:49 PM
RE: 1997 vitara - by fixkick - 11-07-2020, 01:03 AM

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