Question about 1998 Ford Escort

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Car bucks when gas pedal in pushed

I have replaced my spark plugs, coil pack, throttle postioning sensor and fuel filter as a result of trying to fix the problem

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Check for a vaccum line off or a sticking egr valve

Posted on Jan 11, 2009


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I had a coil pack that I just change less than seven days prior burn up then I change out but not it will crank but not start im stumped it is a Mitsubishi endeavor 2004 6cyl.


Assuming your spark plug firing order is correct after the coil pack replacement and your plugs and plug wires are clean and connected properly--and you have gas in the vehicle--I am thinking Throttle Position Sensor (TPS).
To test the TPS you hold the throttle pedal to the floor and start the vehicle, if the vehicle starts you need to clean or replace the TPS.

If the vehicle will still not start and everything was replaced on the vehicle as the parts came off of the vehicle--and the vehicle ran before think:
Compression: Washed cylinders (pull plugs and squirt clean oil in spark plug holes (one-two squirts).
Fuel: pull hose after fuel filter and crank vehicle
Spark: Pull plug wire and arc with screw driver when cranking engine. New coil pack could be faulty.

You may need someone to crank the vehicle (mind your hands) while you test. You should be able to find videos for spark testing.

I hope this helps.

Feb 09, 2016 | Mitsubishi Cars & Trucks

1 Answer

Engine lockout

have you tried holding the gas pedal down a little to see if it starts that way,if it starts then your throttle body/ IAC is dirty,if that didnt work, check for fuel pressure if you dont have a pressure guage you can un-clip the fuel line at the eng have a small plastic jug to catch the gas and have someone just turn the key to run ( not cranking it over) and see if a shot of fuel comes out of the fuel line,then have them crank it over and see how much gas comes out-if nothing or very little then you may have a plugged fuel filter or bad pump,or a bad fuel pump relay-if gas comes out,then it could be cam sensor or a crank sensor problem,assuming every thing else is good-you didnt say if the coil pack was new or used,or if you checked for spark,but a scan tool would give you a code for either the cam or the crank sensor or any other relavent code.A bad PCM will also stop the spark and the fuel,I hope this is helpfull

Apr 17, 2014 | 2001 Chrysler PT Cruiser

1 Answer

Gas pedal wont work 2005 f 150

You need spark plugs,the champion on piece ones
in the motor (were talking 5.4 V8 here)
Can't have plugs in there older than 3 years

You need front oxygen sensors replaced at 100,000 miles

You most likely have several failed COP Ignition Coils, that
give you throttle body codes (the problem IS the coils NOT
the tps sensor or TACM on throttle body-just replace the
coils yourself (Rock Auto.Com for parts)

Clean the MAF Sensor (CRC MAF Cleaner)
New air filter

Mar 14, 2014 | Ford Cars & Trucks

1 Answer

2002 GMC ENVOY 4.2L While the service engine soon light was on received code p0171 but the light didnt stay on. When going down the highway it loses acceleration and when you try to press the gas its as if...

Your vehicle has electronic throttle control .Position sensors in the gas pedal an throttle postion sensors at the throttle body tell the PCM/ECM -engine computer , how much your foot is pushing on the gas pedal an where the throttle plate is located . These postion sensors wear an can cause this problem ! I suggest you take your vehicle to a qualified repair shop an have it diagnosed .

Apr 17, 2017 | Cars & Trucks

2 Answers

What is wrong with my explorer if it cranks but won't go? I can crank it and when going down the highway it won't accel I can push the accelerator all the way down and it won't accelerate....

check plug wires and coil all spark in all plugs should be blue spark no orange spark if any orange replace coil i have a 2003 explorer so i know if that dont sove anything try a crankshaft postion sensor and or cam postion sensor as they tell cars ecu when to fire spark and what cylider to fire it to lmk what happens we can go from there

if it helps i would love a thumb up review

May 08, 2011 | 2002 Ford Explorer

1 Answer

My '01 impala 3.4 v-6 flat spots when COLD, at around 20mph. the idle is ruff with random misfires. acceleration is overall poor. when HOT, most symptoms go away leaving only some slight acceleration...

depending on mileage, but possible tune-up could fix it. if already done then check ignition coil pack and ignition wires also spark plugs, check vacuum hoses for leaks or porous, last injectors clogged - use some techron fuel injector cleaner (wal-mart has them). Also get the throttle body and iac valve cleaned by throttle cleaner . Also this other possibilities are to be checked and confirmed.:---- Engine running rough or misfiring can be cause by the following:

1.Defective spark plugs
2.Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4.False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
10. Throttle position sensor.
11. Manifold absolute pressure sensor
12.Mass Airflow Sensor
13.Idle air control valve

--------- This should help.Keep updated.Thanks.Helpmech.

Mar 27, 2011 | 2001 Chevrolet Impala

3 Answers

96 maxima is hard to start and dies often

when my 96 nissan maxima gets hot it will cut out and almost like buck like it dose not get enough gas. i have chaged all filters and plugs and coil pack

Apr 27, 2009 | 1996 Nissan Maxima

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