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Nissan ga15 engine having a trouble engine surge high idle even cold or hot

Please kindly help!

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6ya6ya
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Posted on Jan 02, 2017

DR NITIN
  • 221 Answers

SOURCE: i put a new head gasket on my nissan oulsar..the engine is a ga15 what are the head bolts torque down to

Goto Service Center and you'll have the Latest Information.

Posted on Jul 14, 2008

emissionwiz
  • 75197 Answers

SOURCE: nissan ga15 engine idle adjustment locations

The idle speed is computer controled, it is not adjustable, you most likely have sludge in the throttle valve and the idle speed control air bypass valve, clean them with carb spray with the engine running.

Posted on Sep 17, 2008

  • 32 Answers

SOURCE: rough idle, surges when cold

have it scanned,ck' tps sensor,mass air sensor,idle air sensor for output...kev-mn.

Posted on Dec 10, 2008

canbruce75
  • 1776 Answers

SOURCE: High idle speed when the engine is cold

The high idle speed at start up is normal. As the engine temperature increases, the engine idle should kick down automatically. Insofar as the emissions results, if there were a problem, the check engine light should be on. If it is, take the car to an autoparts store and have the fault codes read. Most parts stores will perform the scan for free. If the check engine light is not on, and the idle question was all you were worried about, you are good to go! Hope this helped and best wishes.

Posted on Jul 31, 2009

  • 2 Answers

SOURCE: 1987 nissan pick up (z24 engine), while driving

blown head gasket between cylinder 2 and 3 ck compression

Posted on Nov 03, 2009

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1 Answer

2000 Suzuki Esteem 1.8L.. I went to start my motor & turned it off right before started. I heard some kind of backfire. Then I started it and it's been idling high, the surging. Please help!!


scan it yet, a FULL OBD2 scan? why not?if not.
now is the time...


the 1.8L J18 engine, same as the older Sidekick sports used.
same engine , know it I do.
its the precursor to the J20, (j18 is under-stroked, j20 with many of the same parts. inside)
the back fire means explosion sound to rear end of tail pipe?
yes, that is rich raw fuel in the muffler. plus Air.
if there are exhaust cracks and then engine goes rich this can happen( a double failure)
if how ever BACK means, back to the Air cleaner, then that be different reasons, (timing)


engine now starts.?>
engine runs.? has full power, car drives ok.?
JUST?
SURGE,. you never said.

does engine get hot? 180F or more and holds (y/n)
ever get a full tuneup this decade,
most dont so i tell you, bad spark causes, misfire and raw fuel is wasted to the exhaust and sure can go boom.

surging usually means the ISC can not control idle
so it hunts, (a suzuki software engine on all 90s engines)
PCM errors, inside it. (dangerous too)
a modern car, if idle goes too high the ecu commands the ISC closed
and holds it there solid, (safe way , no hunting allowed now)]
so if this car surges, it's , lean engine.

some think flooding is surging.
and this is usually below 800 rpm,
almost stalls, then corrects, seems like a surge.

next time post rpm range of surge.?????

do not drive a surging engine, do not be like Toyota drivers. (over 800 rpm hot)

surge from 400 -800 rpm is class 1 surge.
surge from 800 to say 2000 RPM is class2, and very dangerous to some folks, (key off, get car fixed, tow it)

The ECU controls idle speeds. (hard coded servo controls)

Mar 18, 2016 | Suzuki Cars & Trucks

1 Answer

Car idles high when stopped, and jerks when doing highway speeds


Possible vacuum leak when idling high at a stop and surging at speed. Does it do it hot or cold ?

Sep 04, 2015 | 2006 Nissan Altima 2.5

1 Answer

What should I do my GA15 ENGINE is giving me problems of failing to start with the carburettor spitting or backfiring despite using a new battery?


what is the vehicle , model age etc ? in general this sounds like a timing problem or the vacuum system may have a split/leak etc , i've included a link to a nissan forum as they are the major user of this engine hope this helps
Cam Timing for my Nissan B13 GA15 engine Nissan Forum

Nov 15, 2014 | Cars & Trucks

1 Answer

Increase then decrease idle when engine is cold especially


cold engine idle surge. (problem)
RPM range of surge not stated
300-700 or 800 to 1500? (range is critical to diagnosis)

bad fuel
running summer fuel in winter (running old fuel?)
needs a tune up bad, see the list in the operator guide.
idle speed controller,sticking or EGR valve same. (clean them)
location not stated, so cant guess about local air temps.?
no other symptoms, lack of engine power? etc?
was it ok last week, or better, when was the last time it was OK?
1week, 1year?
surge , causes, on a tuned engine might be:
1: too lean. so lean the ISC can not control idle. rpm low, stalling
2: too rich, flooding, stalling, spark plugs foul (look at them)
3: weak compression in 1 or more cylinders.
4: bad spark.
5: air leaks, in the plenum causing , ISC to lose control.
why high RPM?

especially?
well that means it fails hot too.
and there is a simple tests. for hot surge.
is engine fully hot? 180F and holds solid there?
say rpm is about 800
and you turn on head lights, heater fan and (not AC) and defrost.
the RPM must hold or the ISC is failing.
ISC -= idle speed controls. (all EFI has this function)

Oct 28, 2013 | 1996 Honda Prelude

1 Answer

Hi my pulsar idles/drives allryt till it gets warm then when its warmed up it want idle at all and when you cruse it missis and compresor surges but put your foot up it and it goes fine


Please check your fueling system. While clod car need rich AFR, in contrary while engine hot , your car need lean AFR. This why your car is running bad while engine cold.

Regards, Vote please, JAY

Jan 23, 2011 | Nissan Pulsar Cars & Trucks

2 Answers

1993 Nissan 300ZX idles high 1800rpm cold or hot.


yes, thats the typical symptom of a IAC valve giving you trouble, try cleaning it up but ull probabbly will have to replace it
have fun
hope this helps

Nov 11, 2009 | 1993 Nissan 300ZX

1 Answer

High Idle


I have a 2001 Nissan Altima and mine did the same thing. We replaced the intake gasket. It costs around $5.50, but it requires several different kinds of tools. We spent over $100 in special sockets, etc. But once you replace that gasket, it will idle better.

May 11, 2009 | 2002 Nissan Altima

1 Answer

2001 Nissan Sentra idling and running issues


mcdevito75 here, I woild bring the car to an auto electrical shop and have them check out the entire electrical system.

Apr 15, 2009 | 2001 Nissan Sentra

1 Answer

Engine revs high when started,andrevs surge up and down even when hot as if its being reved on and off,also where are cambelt marks for timing belt 1.2 16v w reg 2000 model


Does this have a self diagnosing emission system, like the USA markets OBD 2 system? we don't have Fiat's here since early 80's, this sounds like a Throttle position sensor issue or idle speed control valve problem, if there are trouble codes stored in the control module's memory please provide them to me along with the definitions, but check the TPS and Idle speed control first.

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3 Answers

Nissan ga15 engine idle adjustment locations


The idle speed is computer controled, it is not adjustable, you most likely have sludge in the throttle valve and the idle speed control air bypass valve, clean them with carb spray with the engine running.

Sep 17, 2008 | 1996 Nissan Sentra

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