Question about 1992 Nissan Sentra 4 Door

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Engine sometimes stops during traffic. only happens when the aircon is open what do you think the problem? is there anything to do with my fuel pump or compressor or the engine?

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I'd remove & clean your idle speed motor first. Referred to as a.i.s. , or i.a.c. motor, but they are same thing. It controls idle under load, for example when AC is on, turning, electric fans kick on etc. Get some throttle body cleaner(spray) and do inside throttle body opening too.

Posted on Aug 30, 2008

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Engine choking during ride


Things to check first:
  1. Fuel filter;
  2. Fuel pressure regulator;
  3. Fuel pump;
  4. Ignition system (including ECU)
  5. Quality of fuel (is it contaminated with water or other contaminants?)

May 07, 2015 | Cars & Trucks

1 Answer

92 geo tracker starts fine then during idle it sputters out unless I pump the gas. If I run it to 3000 rpm it seems ok, but anything under it dies. Changed fuel filter. Fuel pump hums so don't think


what engine, 16valves, or 8valves. silver top or black?
MPI or TBI engine. they sold both and are vastly different.
hums dont mean a thing, only that the pump can make noise.
pressure rules (and flow #1)
ive personally fixed every fail possible on these, stalls.
owned many and fixed more. (own 3 and restored them to 100% )
unfortunately this older car is not OBD2 level ECU/PCM.
so no scan tools work.
Ever give it a tune up.? at the 60k mile interval.? repeats?
1: spare parts, both filters. and timing belt?
2: EGR ,main loves to stick open if it does engine will stall.
starts fine , yes
does engine get to 180F coolant temp and hold? if not fix that first.
is engine idle at 800RPM, hot? y/n? if yes, EGR is not stuck open.
if lower, EGR stuck. or other probs.
not knowing which engine makes answers hard, and only generic.
not knowing the transmission option too, makes it hard. 3,4,5speed.?
the 3sp can have vacuum leaks that can be real bad for the 16v engine, see? see how the work together? or not?
3: bad TPS.
stalling happens for 2 reasons (not counting bad engine)
the ECU (engine EFI brain, puter. etc) does all it can to stop stalls
it has 2 slaves to do that. one is ISC other is spark timing.
when stalls happens this is a warning that the ISC is bad,
or is overloaded.
A: MISFIRE. Gross.( 50 reasons, but can be to rich or just needs a tuneup.)
B: bogging . Gross (too lean, or called fuel starvation)
my questions.
does hot idle run at 800 all the time. RPM.
does engine have full power on hills.
does engine stall coming up to traffic stops (EGR malf)
does the lost power. recover, with just holding throttle down? only?
can you tell the difference from bog and misfire.
bog is lack of power, its smooth
misfire is violent, it shacks the motor. does it?
when you pump the throttle, this engages ENRICH mode
in the ECU , and overrides lean,.
my guess, (cant drive it and if could , i can tell whats going on)
but based on your inputs, it say its lean.
if power is low on hills, i then.
grab my fuel pressure gauge. $20
i do this at every fuel filter change, since im THERE already
it has a test port, a 6mm plug.
i take this hose and check for 30psi,
see why guess here.
34 to 36PSI, key on, 3 times, (both engines, not stated, so..)
see the tool here,for next to nothing. costs.
http://www.fixkick.com/INJECTORS/pump.html

the EFI totally can no work at 20 PSI or hums.
it must be at leas 34psi.
below 28 the injectors fail. (read injector spec, and see that)
if the pressure is good there is hope.

post engine type, 4 injectors or 1.
and can go way deeper and more accurate.

bogging is here
http://www.fixkick.com/power-index.html

Mar 31, 2014 | 1992 Geo Tracker

3 Answers

2004 Ford Ranger Edge: Engine light is on and i believe it is misfiring. My truck runs fine on the highway, however during city traffic or at a stop, the engine is very rough idle and car shakes. The...


Check both your fuel pump and fuel filter, to see if they are some how plugged up. You should also check the EGR valve; if this is gummed up, it would do the same thing. I just got done dealing with the same issue on my 1992 Ford Explorer.

Aug 30, 2011 | 2004 Ford Ranger

1 Answer

While driving on the highway or in traffic, the engine just stops. It re-starts in 3 to 10 minutes. I have changed the mass airflow sensor, but this has not stopped the problem. It also does not...


I had a similar problem, before it shut off, the rpm needle would booble up and down and then drop to 0 and shut off. After a while it would happen in the city and not just the highway. Ended up being the fuel pump, and I was also told the fuel pumps are known to fail on the mk4.

Mar 01, 2011 | 2000 Volkswagen Jetta TDI

2 Answers

When I stop in crossroad or in traffic jump the engine stop


that crazy,if it happen alot it should be found. sounds like someone wants there tech2 to preform a miracle, it sound like a module or fuel pump. 2min is more time than have sometimes to diagnose problems,dont make sense,good luck.

Oct 03, 2009 | 1999 Saab 9-5

1 Answer

My 1988 F 150 has a dying problem. Sometimes when I stop at a traffic light the truck will die. I have replaced the fuel pumps, the tps, normal tune up parts. I have had the injectors cleaned, the trans...


First thing you need to do is when it stalls out, determine what it's not getting (fuel or spark) then once that's been isolated you can do some testing to determine why. If emissions system isn't working properly it can influence running...check and find that problem as well.

Jun 17, 2009 | 1988 Ford F 150

1 Answer

Ford fiesta 1.25 zetec automatic 1997 shut down


Try replacing the fuel pressure regulator.

Dec 28, 2008 | 1998 Saturn SL

1 Answer

High external temperature causes engine to die


Sounds like your ECT (engine coolant temp.) sensor has gone bad. What happens is when the truck is cold, the ECT acts like a choke on a carb. When the truck gets to operating temperature, the ECT tells the computer that it doesn't need the little extra fuel anymore. What's happening with your is the ECT isn't telling the computer that the engine is at operating temp. It's acting like the choke on the carb. is stuck shut. The computer is being told the engine temp is at 40 below still.

Aug 23, 2008 | 1993 Ford F250

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