Question about 1998 Nissan Maxima
The egr on most cars , is a 50k mile service point (cleaning)
ever do the 60k mile tuneup (service sch. list? )?
if tuned up (spark parts, (list) all filters )
then it can be ? EGR sticking open, love to do that just before a stop sign, is its hallmark of messup.
So is the ISC (idle speed contr. valve,electric) this stick , yes clean it.
with all otto cycle engine, there are 3 simple paths.
1: good engine, (some fail hot only)
2: good spark (yes, tuneup deal)
3: bad fueling, yes, as you said, too lean or too rich.
if the engine is good, (compression good)
and the tuneup gives you good spark and good timing.
we land on bad fueling , in that order.
going backwards can result is 3 weekends shot.
so fueling, Ill pretend its fueling and that 1 and 2 are ok.
in the service manual they cover this with tests.
Is the check engine lamp on key on the goes out running,
if not, why not connect a scan tool, (USA answers, all mine)
In canada , the EGR and other errors (misfire) are ignored by the ECU (no CEL warning) so not posting country puts me in hand cuffs.
1: remove spark plugs. are the they soaked in fuel, 1 or all.?
2: if dry , good.
if wet , check for bad injector rates and root cause.
if dry. then you need a scan tool to see if 2 things are good.
1: engine idles hot, in closed loop, if not fix that.
2: light fast cruise, (no hill) does ECU hold Closed loop status.?
3: if those are ok, does the LTFT say near center.
most cars run -4% not -25+ or +25%
LTFT means long term fuel trim.
when running look for pending errors. and live errors and stored errors, they are called DTCs
Drive-ablity issues are the most complex , just before intermittent.
huge books exist on topic.
here is one more of the many,(misfire )
induction air leaks
what we call this is gathering evidence. (after the tuneup)
Posted on Oct 12, 2013
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Posted on Jan 02, 2017
SOURCE: I HAVE A 1998 NISSAN
i have a 1998 nissan maxima when the engine is cold the engine will cut off when you first crank it. It will cut off but i can usually get it going the second time. After engine warms up car runs great. Why does this occur
Posted on Jan 17, 2009
you have to eliminate several items
one at a time.
but it all comes down to three things air, fuel and fire.(spark)
disconect the gas line and see if the fuel pump is pumping at rated pressure you mayneed a gage for that, gas is dangerous be very careful dumping any amounts about, or disconect and see it squirt into a container ,again be careful. if you are confident that the streem of gas is strong. then it is not the fuel pump.
spark? The sensor for the spark plugs may be a pcm system which is a pulse hall effect sensor that sends a signal though a coil in the distributor. the steel in the coil may be getting rusty and swelling ( steel swells if it rusts ) the mettal plates in the center of the coil may be expanding and now are stretching the copper in the coil so now they are broken but just touching enough to run untill it gets to hot ( mettle expands when hot ) causing the hall effect sensor not to work propery all the time.
check the air cleaner for a proper filter to be clean.
mostly it is either fuel or spark.
Posted on Feb 21, 2009
You may have frozen fuel lines. Sounds like not enough fuel is getting to the engine. You may need to bleed the system and change fuel pump, fuel filter and check the injectors
Posted on Jun 20, 2009
Hi and welcome to FixYa!
As a first course of action, I strongly suggest that you replace the MAF (mass air flow) sensor and the TPS (throttle position sensor). If the MAF and TPS is faulty the RPM tends to go down or goes erratic. The MAF and TPS is located at the throttle body which is secured by small screws or bolts. It is visible which can easily be seen.
Once replaced you'll be good. Hope this helps and thank you for using FixYa! Have a good one!
Posted on Feb 27, 2011
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