Question about 1996 Ford Taurus

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Slow start, has new battery, clean injectors, loss of power on hot days (will shut down and coast to a stop)

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Bad fuel pump,a possible, on the shutting off issue.
Loss of power, most likely a separate issue.
Need a clean fuel filter. It should last two or three years or 30,000 miles though.

Posted on Aug 27, 2010

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1 Answer

Engine Runs Rough


It could possibly be dirty injectors. Try a good injector cleaner, I've had good luck with sea foam bra

Aug 02, 2014 | 2002 GMC Envoy

1 Answer

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.








Dec 14, 2013 | 1999 Jeep Cherokee

2 Answers

My 2004 saturn ion is hard starting you have to depress gas pedal to flor and when it starts very idle very slow seems like it flooding with large of engine power


clean the throttle body also pull the vacuum line from the pressure regulator and see if fuel drips out if so the regulator is bad

Aug 04, 2012 | Saturn Cars & Trucks

3 Answers

1999 astro/4.3L/starts cold /runs 10-15 min. then dies will not start hot new battery.new coil/clean filter/pump 2 yrs old installed new/battery shows 14 amps when running/ won t crank when hot either/...


car shuts off when it gets to normal operating range. it takes 10-15 minutes to reach normal range. causes: low coolant, failing coolant tempurature sensor, air in water pump, check the coolant temp. sensor. if it is bad it will send wrong info to engine when hot, and shut it down. ITS WORTH A TRY!! good-day!

Sep 15, 2011 | 1999 Chevrolet Astro

1 Answer

On hot days when I stop for gas, I shut the car


Fuel pump worn out and is weak, when the fuel is warm the pump expands and the fuel pressure is good. When the colder gas is added or when the gas has cooled down the fuel pump.
The pump can not create enough pressure to run the fuel injector due to the piston and sleeve in the pump are worn out, you might get another year if you lucky by replacing your fuel filer.
Start with the simple and replace your fuel filter and check your fuel pressure readings at the shredder valve on your fuel injector rails. You should have i think 56 PSI to run them properly.
Thank you for using fixya and be safe.

Jun 02, 2010 | 1999 Oldsmobile Intrigue

1 Answer

93 Lumina 6cyl 3.1 engine shaking @ overdrive gear


check your camshaft and crankshaft sensors. When defective, it may cause stalls, misfires, loss of power. Also have check the engine for vacuum leaks. Hopefully this helps!!

Apr 14, 2010 | 1993 Chevrolet Lumina

2 Answers

While driving engine just shuts off


go down and have your alternator checked, it might be weak, causing a surge in power to the ecu, shutting the engine down, if was the battery the car wouldnt fire right back up, another thing might be the fuel filter/pump, these should be the first things to check.

Mar 26, 2009 | 2001 Ford Escort ZX2

2 Answers

2.9 rough idle/lopes when LR/1st gr


Presumably you mean slow cranking. Check for weak battery or bad starter.

If not slow cranking so much as long cranking time check for loss of fuel pressure overnight using fuel pressure gauge. If so, suspect leaking injector or possibly leaking regulator.

Jun 20, 2008 | 1986 Ford Bronco II

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