Question about 1997 Honda CR-V

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Lossing power when hot

Can be driving on motorway or just going 50k on normal roads. never stalls. just feels like big hand pushing back. when we brought the car we we told by the dealeecar leads, sparkplugs, fuel filter were replaced. so ovisly prob was therebefore we brought. since we have had it we have repalce rotor, ign module,coil, the prob still there. then we replaced ign switch, main relay. had the electrics checked it is not showing ant faults. no lights come up when prob starts. i put mt foot down it spits & slutter then kicks down and off it goes.have rung honda they never heard of theprob before. it doesnt have a erg valve. it is a b20b motor fuel injected, automatic basicly a crv motor & gear box help any ideas.

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Bad Fuel pump or ecm. Good Luck

Posted on Dec 15, 2008

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Mine had the same problem but it would start in the cold but would stall if i tried to move the car. and it would run sluggish hot.
once in a while i would get the check engine lite on would have a code that said burning too rich .
even when the light was not on it would go through alot more fuel than normal.
i tried changing all kinds of stuff o2 sensors, coolant temp sensor, throtle position sensor, air intake sensor, timing belt, and water pump just because its so expensive to change the timing belt and waterpump is run off of it.
compleate tune up roter cap to the plugs. and nothing worked.

the real problem that nobody but 1 mechanic knew just from the issues i told him.
lifter rockers too tight. and needed to be loosened and re torqued
it cost me just the price of 1 hour labor. about $90.00
he told me honda engins are the best but the lifters tighten up with time and must be re adjusted every 100k miles
mine had 120k when it started giving me cold weather problems and i only met the mechanic at 135k miles my second winter with the problem.
My CRV runs like a new car now!

Hope this information helps your problem..

Posted on Feb 18, 2009

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Hummer stalling while driving


Big engine needs a good strong drive belt. Belts stretch after time and just need replacing. I would start there first. Next if you notice any sputtering when it's about to stall then it may be a bad or clogged fuel filter.

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At times it justs starts to sputter and run rough and then die


hello Dennis. (no miles stated)
what engine, 4.0L I6 2.5L? I4
ever tuned it up? all spark and filters, the 60k mile, ever?
this post is random engine stalls?
so does it stall hot or cold or both
does it stall moving, right foot planted, cruisng
or only parked, or only as you come to a stop
do dash lamps/gauges or? go out before the stall? (look)
CEL off running.. ok, no DTCs stored if USA car. is it?

my guess is this stall can happen hot or cold engine.
location not in klondike (location not stated, so wild guess.)
hot stalls, ?
1 lets say coming to a stop. is very common EGR sticking open
2 never tuned up, ever or even the last decade?
3: ISC/iIAC sticking closed, jeeps love to do that any I4 , its a big issue. the idle stepper motor cone gets gummed up, clean it.
i clean both my jeeps, I4 ISC like 100 times since 1988.
4: bad TPS. but usually it throws DTC'S for this. if driven hard)

some I6' have no EGR valve. PCM has no EGR pins.!
you can monitor DC power at the CIG lighter, to see if power drops
at stall, easy, 13.3v to 15v is normal or ALT system is dead..

make sure the Automatic shut down relay is not being shut down
by PCM (DB/YL wire) goes to 12v is shut down, 0v is not.
the PCM can cut the ASDR for may reasons, oil pressure or battery overheat,? many, best it to find out of this RELAY is dropping EFI
off LINE. IT can .

lets do stalls.
i see tachometer drop below 800 RPM hot .
i try to save the stall, ISC stuck closed, and my right foot
opens throttle instictively and i save the stall.
easy, that is loss of air. see why?
on mine the stupid, ISC/.IAC works like this
the PCM remembers to ISC positions (stepper)
one cold start and one hot start (a secret i learned)
it then looks at water temps and guess (math) at a best start position.
if it used hot ISC for a COLD start the engine will want to flood due
to valve mostly closed, from last hot shut down,.
so floods, use right foot 10% ,

so i cant comment on what it might be until you state (displacement)
the engine temps. at fail
the operational mode, parked, stopping or between 5speed mt shifts.
or what?
if it fails parked in drive way.
or only moving or only coasting.
stalls on the fly?

im online at alldata.com and there are 16pages for PCM only.

this car the PCM controls the Alternator, (a software reg)

now another tack.
the car in usa, as OBD2, i connect my scan tool
and log, i drive and log. car stalls
i drive home ,play back my logs, and bingo
i see what happens at the stall, all sitting at my desk.
warm and dry.
lost comms,?. is DC power lost.
Pending DTCS
real live DTCS
some DTCS auto clear, at die.
some PCMs will reset the CKP or CMP sensor or spark failures.
so can only be seen live. (watching, 1 more secret)

now Bar stool answsers (any EFI car)
ever tune it up, ever do the 60K>? if not why not now?
lost spark, see if spark is being lost at stall, (at all plugs)
bad fueling, (too high or low fuel pressure at stall)
loss of air (ISC/IAC failed)
EGR (if there) stuck wide open,


if the engine runs perfect at most times, its probably ok
so is bad spark or fuel
spark is first. but not if never tuned up.
fueling is last to check , as PCM cuts fuel with spark failure sensed.
bad fueling can be bad injection or total loss of air supple , at idle.








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why not finish the tuneup, spark and air filter.
also the EGR valve is a 50k service point.
if the EGR sticks open, Just before a stop sign driving
this is a sure sign of a stall ,by EGR. failure (clean it)
my pat gas.
so you are really saying, the rpm drops way below normal?
at idle , then stalls.
but the fast right foot saves the stall?
below 400rpm most cars stall. 300 for sure.
the CEL will flash on just at or just after the stall. RPM based action it is.
and if the stall is easy to save?" is it, super easy,? then the ISC is failing, the idle speed controller.
if on the other hand the skipped fuel tune up, its all nasty bad spark then all hope is lost , for ISC and ALL.
do the tuneup first, see the list?

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