Question about 2003 Ford Expedition

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Engine hesitates and briefly cuts out but doesn't stall, 4.6L No code are showing up

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Mine turned out to be the vacuum hose from the PCV was leaking.

Posted on May 05, 2010

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Have a fuel pump pressure test the fuel pressure cause if there is no dtc mean there is no problem in the computer management

Posted on May 02, 2010

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Check coil packs also check for broke vaccum

Posted on May 02, 2010

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I am experiencing a problem with engine running rough surging and cutting out. Tried all the obvious no result


engine running rough surging and cutting out Dj. A lot of things could cause this issue. First thing to do is have vehicle scanned for trouble codes, a good Tech. then can diagnose and estimate repair. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
The dreaded engine surge Automotive Service Professional
How to solve engine hesitation and stumble problems on the90
Diagnose Engine Stalling Problem

Jul 28, 2016 | Cars & Trucks

1 Answer

Cuts out while driving


which engine option??????????????????????
sensor 2 is not it. sensor 2 is only a CAT test.
Sensor 1 runs fueling at idle and light flat cruise.
the CUTS out, dont tell me anything.
is the engine stalling?
ever tune it up and not buy the most expensive parts in EFI. map, and IAC?

Cuts out>
do you mean it hesitates and then catches up?
does the engine stall and die?
does the wide open throttle work up hills with full power?
cuts out.
if it is only short time hesitations and then wakes up
that is tuneup time, spark plugs, new, spark wires,
read the operators guide, for 60,000 mile tuneups. filters /spark parts.
if it is tuned up, and only hesitatates
try a new TPS.
if it is a deep long lasting full bog.
then the , fuel pressure is low, check that, the guage costs $20
make sure fuel pressure is at spec, first for BOGS.
the EFI system can not run right with low fuel pressure.

all 0xygen sensors are off line, accelerating so its not that
only the front sensors set fuel rates and never accelerating.
the ECU shuts them down then
and uses the map , air temp to calculate fuel rates.
but if fuel pressure is low, it gets all that wrong.
after all , it dont know its low, and can not adjust for that
and most injectors are useless below 28psi.



Mar 06, 2014 | 2002 Jeep Grand Cherokee

3 Answers

When maintaining speed of about 50mph,2004 pacifica hesitates and will cut off while in park sometimes.check engine light is not on


ENGINE HESITATES WHILE ACCELERATION

LOSS OF ACCELERATION


It can be fuel pressure issue or it's the problem with accelerator pedal or its clogged filters causing there.

There are many other possibilities. I suggest you to go through the list of help links mentioned below, these will help you to confirm where the actual fault lies: -------

Jerks and Hesitates During Acceleration?

http://technoanswers.blogspot.in/2012/07/2004-dodge-town-country-jerks-and.html

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Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html

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Headlights flickering and car hesitates to start?

http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html

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How exactly the Vehicles Accelerator Cable works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html

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How exactly Vehicles Accelerator Pump Diaphragm Works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html

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2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html

---------

2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End?

http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html

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Wheel hop under hard acceleration?

http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html

--------

2009 Chevy impala accelerator pedal sensor?

http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

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Nissan Pathfinder stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

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Acceleration lag problem?

http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html

-------------

These details will help.

Thanks.

Nov 28, 2012 | Chrysler Pacifica Cars & Trucks

1 Answer

Car cut off on the freeway, won't restart


The first thing that must be done is to have the engine control computer scanned for fault codes to help diagnose this stall condition, all repairs are based on what shows up (or doesn't show up).

May 24, 2012 | 1997 Nissan Quest

1 Answer

2002 Yukon Hesitation when starting- No checking engine lights!!


This can be fuel pump related or just fuel filter related, spark plugs and injectors.
When engine is cold vaporization of gasoline is minimum. When fuel vapor is less than required and the fuel mixture is not ideal, ignition happens harder than it does under ideal running conditions of engine. When fuel pups is sweak, or filter is limiting, or fuel injectors are not injecting gasoline with improper pattern inside engine, or just becasue of corroded spark plugs, cold engine faces difficulties during first ignition.

PS: sometimes car starts and stalls.it fails to start once more. this can be a sign of broken crank position sensor. FYI.

Nov 18, 2011 | 2001 GMC Yukon Denali

1 Answer

I have a 99 Buick Regal, it hesitates and even stalls out. I had the oil and filters changed as well as the fuel filter. It is still hesitant and feels like it wants to dye. When I changed the fuel filter...


A combination of problems could be causing your hesitation/stall issue:
  1. Bad MAF (Mass Air Flow) sensor
  2. Bad TPS (Throttle Position Sensor)
Getting a free diagnostic test to pull codes will make narrowing down your problem a bit easier. Most chain auto parts stores will do a complimentary diagnostic test. The most common cause with a car that stalls when warm is the TPS. It controls your idling speed under all conditions. Even replacing the MAF alone doesn't always fix the problem although it may show up as being problematic. The 2 parts basically go hand in hand with your particular problem.

Jul 13, 2011 | 1999 Buick Regal

2 Answers

Occasional stalling at very low speeds with no warning. Sometimes it stalls after driving less than a mile so it doesn't seem heat related. Occasional no start. Starter does crank though. It...


code 17 is camshaft sensor error. a failed camshaft position sensor will show up in a number of ways. The worst-case scenario is that there is no spark in the combustion chamber. Other symptoms related to the position sensor can include excessively long cranking time when starting cold, rough running on an intermittent basis, poor idle, stumbling or hesitation, a drop in mileage and stalling upon acceleration. code 17 is for OBD-I system 1995 and before, OBD-II system 1996 and up. these symtoms can also be caused by bad wiring to sensor. good-day !!

Jul 13, 2011 | Buick LeSabre Cars & Trucks

1 Answer

I HAVER AN 04 MIATA. I LIVE IN PHOENIX AND WHEN IT GETS ABOVE 103 DEGREES AND THE CAR HAS BEEN DRIVEN FOR A FEW HOURS THE ENGINE WILL BEGIN TO STALL. DOES NOT CUT OUT COMPLETLY BUT IF THE CAR DOES CUT OUT...


you should scan the vehicle and if you have no code then go into data and see with sensor is defaulting if you get hesitation when driven then the check engine light should be on and if not check fuel pressure

Jul 26, 2009 | Mazda MX-5 Miata Cars & Trucks

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