Question about 1991 Nissan Maxima

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I have 91 maxima that wont start i have fuel,spark,and timeing i cheaked the ecu and got basicly every code in the book the car ran a year ago on 4 cylinders and then it sat for 8 mounths and now it wont run

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Check the fuel pressure

Posted on Jul 06, 2009

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Dear,sir I have aproblem on my vehicle brand suzuki Escudo model 1994. - engin will not start after driving.this happens after i renewed the whole engine two weeks ago. Thanks and best regards.


replaced the motor
it is starting and running
after engine is turned off after a road trip
wont start

cranks over or totally dead ?

its an electrical or fuel delivery problem
some sensor or function failing after it gets hot

if no codes to be read it will be a simple fault

check spark at the plugs
voltage to the starter motor and ignition

if the engine check light is on
there will be fault codes in the ECU
sensor like crank angle sensor or fuel injector related




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Mar 08, 2017 | Suzuki Cars & Trucks

1 Answer

1989 toyota pickup v6, wont start


Start with the basics....
1-Scan and/or Preform manual code retrieval
2-Test for spark
3-Test for fuel pump running /Fuel PSI
4-Test fuel injector pulse

Mar 03, 2015 | 1989 Toyota Pickup SR5

1 Answer

Still getting grief from my 91 accord. I've been


It isn't the voltage that concernes me rather than the amperage your battery can have a dead cell or melted cell try using a new battery first! then if no start move on to the ecm you can go to a salvage yard and get a used one but then again how long will it last is the question? Also are you tired of walking determines the resolution to your distributor woes! aftermarket ones are not machined exactly to spec as the oem component! The distributor shouldn't have a condenser if you have an ecm! Hope this helps you out? www.youtube.com/watch?v=BKjzQ-vBvco

Jul 31, 2014 | 1991 Honda Accord

1 Answer

Autoshutdown keeps turning on


which engine???????????????????????????
ASD is tricky on jeeps.
The Auto shutdown,relay.
what is it , how does it works is covered in the fsm. read it.
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service
The ECU runs this RELAY, and if the ECU sees a gross error
it shuts this down, and the schematic there is clear as to what.
both spark and fueling.
here is what can drop it out.
1: crank sensor.
2: cam sensors or TDC ,etc.
3: sees spark dead or weak.
4: Immobilizer active. (failed)

as the book says , make sure spark is good for the 2 seconds cranking. (not after the 2seconds)
the ECU is programmed like this.
user cranks.
ECU creates spark,, using the crank/cam sensors at the time base
for 2 seconds
if the spark read back fails or the 2 sensors fail, the ecu shuts DOWN.
this is for fire prevention.
most other cars just cut the injectors, but not jeep
the drop the MAIN ASD relay.

using the check engine light flash codes, you can see which of the
3 failed, cranking for 5 second and releasing the key on all cars.
1996 and newer a scan tool is use to same effects.

now the 64,000 dollar qustion,
see page 8w-30-4
why does the ASD KILL THE IGNITION coil. easy.
1: it only guess it 2 seconds to make spark
2: if it cant,. it then drops the relay. killing fuel too.
3: this prevents the the crash and burn you see on TV.

so its 2 second permissive system. (or 3?) i forget exact seconds, its in then book and is short.
many dont know this. but is a fact.


now the flash codes.
crank for 5 seconds while in flash code mode
see emmisions page for how.

flash code 11 drops the ASD ! (cam or crank sensor dead)
code 54 cam signal dead?
code 43, spark bad.

Mar 02, 2014 | 1993 Jeep Grand Cherokee

1 Answer

My 1991 jeep comanche sputters when in 3rd at bout 3 grand.does it have a revlimiter?


no , but if in limp home mode (ECU) yes.

if the cel is out , running its not in limphome.

my guess? car was never tuned up, in last 60,000 miles or ever.

i had a 91 Comanche and ran it 250,000 miles, (5speed)

classic fails:

the bottom exh tube under my bell housing , the clamp breaks every 6 months ( i welded up a life time clamp) this allowed the

exhaust down tube, to flex and whole exhaust to act as silly pendulum. this put stress on my SST headers causing crackes.

this in turn let fresh air suck in to the header and slam the oxygen sensor to the rails, (car ran rich a s pig and could not keeps spark plugs clean.)

also the 91 has recalls on the CKP sensor. causing misfires.

its on the top left top of bell housing, very hard to see.

there is no scan tools for this Renix system. so can pull scan DTC codes, is your CEL glowing running?, BINGO.

my 99 Cherokee had none of this (well except sloshing fuel starves the fuel pump at 1/4 tank, design flaw.)



sputter is misfire.

the 91 does not have misfire detection in the ECU,

not till 1996.

so you are the detector.

do a full tune up.

then look at spark tips.

are the cream color or black.????????????

if black, post back.

i still miss and loved my Comanche. (im 1/8 real Comanche blood)

Nov 10, 2013 | 1991 Jeep Comanche

1 Answer

Ok guys I have a 97 lhs the fuel pump went bad replaced it car ran great again but now it wont start turns over have replaced the fuel filter and the coil pack and still it wont start im stumped please...


this is not unique to chrysler, at all, its EFI.
all EFI works alike , the shapes change to fool the non tech.

i dont know about you, but in my shop
i check fuel pressure and you found it at zero
then put in a new pump and didnt check pressure.
why would you do that? after all it was zero.
and you do that and its still zero. then find a bad wire /connector
in the fuel pump power feed or the fuel pump relay.
or ? a inertial cut out sw, or rollover switch. (i said generic)
now rule 2: if spark is bad, the ECU cuts fuel,
BY DESIGN. that dont mean spark really is bad, but does mean
the ECU can not SEE spark, or that the Tachmeter line is dead.
All ECU monitor spark 1 way or the other, and if that fails.
there WILL BE NO INJECTION period.
use your scan too to see DTCs while cranking and dead RPM cranking for 5 seconds, release key and look for crank or cam
sensors errors, key key on for 1min to see them pop up.

your are stumped because you are not troubleshooting, only guessing. and will make you broke fast.
here at the simple tests, in the proper order.
1: compression on all cylinders. if all are horrid.
the cam timing is way off. no motor will run like this.
2: spark check for spark. ! at all spark plugs, not just one.
3: make sure the ECU is happy about spark, RPM moves cranking , etc.
if spark tips are dry at this moment test fuel can be used.
does it start now then stall as the the test fuel is consumed.?
4: check for injection.
do the injectors click , do all of then click , cranking>?
if all fail, i can assure you the ECU is CUTTING FUEL!!!
if one dont click , then run a NOID lamp test in this injector
and make sure the coil reads near 10 ohms not infinity.
5b: you can do an injector balance test.
cranking, see that the pressure drops, as you crank.
Ill not cover this , as its a SOP proc, in all EFI books published.
but take to bank, can witness the drop in pressure and know the injector does in fact inject.
that way or by looking at fuel soaked spark tips.

the injectors can fail in many a way, they are fuel cooled.
A:shorted coil, open coil
B: ecu driver dead.
C: injector clogged or leaking (leaking causes flooding)
the injector has inside 10 micron screens. tiny,
d: bad fuel. cant burn or clog s screens.

you are now totally confused (above) or are un-stumped.

if you dont understand EFI at all , then lets go back to 1920.
this works too, on all otto cycle engines
1: compression, good, time number of cyclinders.
at spec. all equal, most 150psi to 200 is typical today.
2: got spark times all cycliners.(oh, yes, timing right)
3: over fueling or under.?

that is it, its and air pump , if it can pump air, it's hopeless.

the 3 steps work , every time. the tests are easy and are documented for 90 years, now.

Oct 02, 2013 | 1997 Chrysler LHS

1 Answer

1991 geo tracker wont start. replaced ECU, Fuel Relay, Main Relay, Distributor, Cap And Rotor, Plugs, Wires, Igniter, Coil, Still No Spark And No Fuel


wow, you guessed that many times? you must be broke.
want to diagnose it, then post here.
91 is easy car to fix. sure it.
i have 100% docs. and tools. and are here too.
cranks but no start
http://www.fixkick.com/nostart.html
see test 4, a key test.

a: do you have spark at the coil?, not the spark plugs the COIL.??
b: yes, then dizzy is timed wrong or cam timed wrong.
if cam timed wrong, both will be., wrong.
the cam that spins will never kill spark.
the funny folks down 12,000, SouthWest, make rotors that are junk (if you get my drift, we call these C4 parts.)
and can be inserted 3 ways, not BOSCH. only 1 way works.
That is why you check spark at the coil, so you dont get lost.

c: the ECU cuts fuel when spark is dead, so fiddling fuel
is a total waste of time and cash.
d: the ECU tells you , if ether key signals are bad.
why not check for code (DTC) 41, and 42 happen. cranking for 5 long seconds.
here is a forum to get help
interactive live help, and not all the bad noob guessing ...
http://www.fixkick.com/bbs2/Suzuki-bbs/forumdisplay.php?fid=2

did you sell if for scrap yet?
I hope not.

Aug 12, 2013 | Geo Cars & Trucks

1 Answer

91 NISSAN MAXIMA , ran out of gas , and put gas in it and it still wont start ,I heard that the factory anti-theft system will shut car down i that. true ? We can get it started ,checked for spark, no...


if it ran out of gas it just may be air locked, you can't just crank the engine turn the key to the run postion for 3 seconds and shut off and do this 7 or 8 times then try starting it. The fuel pump will not pump while cranking it is a fail safe if the car is in a wreck and the pump won't continue to pump gas out and catch on fire. This should fix it for you.

Jul 25, 2009 | 1991 Nissan Maxima

1 Answer

91 tracker new engine been sitting wont start


1-check for strong battery
2-check for spark from the spark plugs wire
3-check for gas prusser
4-check if there is any after market alarm system build in your car

Mar 16, 2009 | 1991 Geo Tracker

1 Answer

Engine cranks, but does not start


My suggestion to this is to check the basics. Check fuel pressure and check spark during crank. There is no quick answer for a no start condition. You always have to start by checking the basics. An engine with no spark or fuel will not start every time.

Feb 06, 2009 | 1998 Jaguar XJ8L

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