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Car Engine Stalls and Runs Poor Questions Visit -
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This
category contains featured questions as
examples. They relate to most vehicles.

Question:
2001 Jeep Cherokee,
mileage 83,000. When I bought the Jeep, it had 65,000
miles on it. I have put 17,000
miles on it...I drive from California to Utah once a
month. On my last trip as I pulled into the driveway it
almost started to kick. A couple of days later after
driving for a few minutes on the freeway it would kick,
lose oil pressure and I would press the gas and nothing
would happen. As a result of the oil pressure dropping
the RPM's would drop till it stalled or vise versa. I
got it diagnosed...they got a code 171. I was told it
needed a tune up, and that the exhaust manifold was
cracked. Today I fixed the manifold and gave it a tune
up, so now I have better gas mileage and it definitely
runs smoother but it didn’t fix the problem. I have 2
family members who are mechanical engineers and one
mechanic and they are all stumped. Have any suggestions?
Answer:
First scan the PCM for trouble codes using a hand held
engine scanner, Then repair
codes by replacing failed sensor as needed. If no
codes are present we would suggest
a faulty crank angle sensor located in the back of the
motor above the fly wheel.
Question: 1999 Dodge Caravan Mileage 123,000.
The problem has happened three times in the last 4000
miles. I will be driving at 30 or 40 mph and the van
loses power and I can hear a pinging and if I give it
gas there is no power. I turned the van off and then on
again and had the same problem. The first time I had it
towed and a shop found nothing wrong. The second time I
turned the van off and let it sit for 30 minutes. The
van ran fine for another 2000 miles. Now it happened
again and it soon cleared up after sitting for only five
minutes. I called the auto shop and they think it may be
the coil pack. The first time the computer gave no
problems. I have changed the plugs, wires, O2 sensor,
fuel filter, and added some injector cleaner. Should I
change the coil pack?
Answer: First scan the PCM for
trouble codes using a hand held
engine scanner, Then repair codes by
replacing failed sensor as needed. If no codes are
present we would suggest you may have crank angle
sensor, coil pack or computer failure. Also, check for
poor or loose ground connections.
Question:
1999 Chevrolet 1500 Van mileage: 142,000. I have
reviewed all of your questions and answers to see if
anyone had a similar problem. Found one that was
close but not exact. The car will start and run
for about 20 seconds at normal start idle speed.
It then idles down too far and dies. I was sure it
was fuel pump/filter related so replaced both. No
help. It will not restart unless you turn the key
off and then on to start. It acts like it resets a
relay. This was a sudden event. There are no
error codes in the computer. I have checked
coil/plugs/wires and all seems fine. I have spark,
fuel and compression are ok too. I also suspected
a vacuum leak but the lines seem ok. It ran just
perfect before this and sounds normal during the 20
seconds it does run. This one really has me stumped.
I appreciate any advice you offer.
Answer: First scan the PCM for
trouble codes using a hand held
engine scanner, Then repair codes by
replacing failed sensor as needed. If no codes are
present we would suggest replacing the idle air control
motor and recheck.
Question:
2002 Nissan Maxima, miles: 79,000 My car is having
problems a few problems. It has trouble starting
(whether the engine is cold or not), and also cuts out,
like when stopping at a stoplight. Both of these
occurrences are random. Sometimes the car works
fine, and other times, I've had to get it towed to a
service station. When the car has trouble
starting, the engine cranks, but doesn't always start.
When it cuts out, it can sometimes be started right back
up, other times it does not. I've had the fuel
filter, and an electric module replaced. The
mechanics also tried switching the airflow sensor and
the car's computer, but neither of these worked.
Please help! I've been to three different
mechanics (including the dealer) and no one knows what
the problem is.
Answer:
Intermittent problems are difficult to trace.
First scan the PCM for trouble codes using a hand held
engine scanner, Then repair codes by
replacing failed sensor as needed. If no codes are
present we would suggest replacing the fuel pump.
Question:
2002 Oldsmobile Alero,
mileage: 68,000. My car was shutting off while
driving on the road. It did not shutter and stall, it
was like the ignition just immediately shut off.
After pulling to the side of the road, the starter would
work, but it wouldn't start. After waiting about
ten minutes, it would start and run well. It
became worst in that after about 15 to 30 minutes of the
engine running, either on the road or idling in the
driveway, the engine just shut off. Fuel pressure
and vacuum check ok. Now the car won't start at
all. Starter motor works, but there is no spark at
the plugs. I have already replaced the three coil
packs, the sparkplugs are fairly new, put in at about
60,000 miles and the wires look very good. I put
an ignition module on the car when it was cutting off on
me, but that didn't fix the problem. No trouble codes
were set when the car cut off it the past. Now the
trouble code is a 44, which I think means lean fuel.
I have check the wiring harness with an ohmmeter between
the ignition module and the connector just before the
computer and checked the connector the crankshaft
position sensor for continuity and found no problem.
I removed the crankshaft pulley/ vibration dampener and
cleaned the cps and the fins on the dampener, but it
didn't help. Would appreciate any help. Any
ideas? Thanks,
Answer: First scan the PCM for
trouble codes using a hand held
engine scanner, Then repair codes by
replacing failed sensor as needed. If no codes are
present we would suggest replacing the PCM.
Question:
1999 Ford Focus, mileage: 102,000. The car when it
starts idles good, but stalls when put in gear. It
stalls very easily and sometimes wont start and gas gets
in the oil. I have new spark plugs,
distributor cap and rotor. I do have a good spark.
I have checked the timing belt and all timing marks line
up. The check engine light does not come on.
I checked for codes with engine off and there are none.
I installed a new fuel filter and installed a gage in
the fuel line and it is 37 psi. I have installed a
new air intake pipe because the old one had a hole in
it, but there was no change.
Answer: It
sounds like the idle speed control motor is weak and
needs replacing to repair problem.
Question:
1998 Chevrolet Cavalier mileage: 92,000. I've been
having an idle problem and a stalling problem with my
car. It happens once it get warm and it doesn't
happen all the time. The idle will stay a little
under 1000 Rpms and it will stall...I also had it stall
while going 75. What might be causing this?
I already had these things replaced: EGR Valve,
Fuel Filter, Fuel Pump, Air Filter, spark plugs, and a
tune-up. Help me please.
Answer: First scan the PCM for trouble
codes using a hand held
engine scanner, Then repair codes by replacing
failed sensor as needed. If no codes are present
we would try replacing the fuel pump.
Question:
2002 Mercedes Benz, C280 mileage: 111,000. My car
dies when I come to a stop, once it's warmed up after
having been driven for about 15-25 minutes. It's an
automatic, but the characteristics of when it dies is
like having a manual shift car and leaving it in 3 or
4th gear and coming to a stop without engaging the
clutch. It gets jerky and then dies. I
immediately put it in neutral and it starts right up,
but when I try to put it in D [drive] again it dies as
if I put it in a higher gear. What could be
causing this and how can it be fixed? I've thought
about changing the transmission fluid, but will that be
enough?
Answer: Your
car has a lock-up torque converter in the transmission.
It is supposed to disengage at lower speeds. Yours
is not disengaging. There is probably a valve in
the transmission “hanging up”. Having the
transmission serviced with new fluid may help the
problem.
Question:
2005 Chevrolet Blazer, mileage: 44,000. Blazer
won't start at times at other times it does fine.
Mechanic looked at car twice but couldn't get a read on
the problem because it started every time he tried it.
The engine turns, I can hear the fuel pump turning on
and off, everything else in car works fine but it simply
won't turn over sometimes when you crank it leaving me
stranded where ever I may be. If you leave it
alone for a few hours after initial fail, it will fire
later
Answer: First
scan the PCM for trouble codes using a hand held engine scanner, Then repair codes by replacing
failed sensor as needed. If no codes are present
we would try replacing the fuel pump.

Repair Topics / Stalls / Stalls-1 / Stalls-2 / Stalls-3 / Stalls-4 / Stalls-5 / Stalls-6 / Stalls-7 / Stalls-8
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