Question about 1997 Mercury Mountaineer

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Stumbles on acceleration check engine light is on how do i get code read out

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It is an OBD II car. Autozone will read them for free. Possible some other local shops will too.

Posted on Sep 09, 2010

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Engine light on, flashing and hesitation when accelerating?


You will have to have your vehicle scanned to retrieve trouble codes. with the codes diagnostics of the problem can be more reliable. It could be something as simple as a vacuum line cracked or off. check links below for more info, press the helpful button.
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Car stumbles up hills upon acceleration and always stumble at 43 mph. it has 120,00 miles


We need a little more to go on.
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Could be ignition or fuel related. A vacuum leak.
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05 Pacifica stumbles during acceleration


check the manifold is not leaking on the intake side. also check and clean the intake top. carb clean helps to clean out all the muck out on to a cloth. also carb cleaner will help if you have a leak spray round the intake when engine is a temp. engine will cut out or speed up depending on carb cleaner used. were there is a leak.

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Keep getting po102 if using a scanner to read codes but the engine light is not lit. does periodically have a stumble on acceleration. checked hoses, cleaned throttle body , replaced mass air sensor. runs...


if the problem for p0102 was repaired & the ck engine lamp is off then i would'nt be
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Jun 22, 2011 | 2003 Chevrolet Impala

1 Answer

Hesitation in acceleration with no check engine light


MOST TIME CAR STUMBLE OR HESITATION ON ACCELERATION YOU.HAVE A SLIGHT LEAN FUEL MIXTURE.CAUSED BY STOPPED UP FUEL INJECTORS OR FUEL FILTER SLIGHTLY PLUGGED.

Jun 07, 2010 | 2001 Audi A4

2 Answers

The code reads P 306 misfire on cylinder 6. How


A P0306 code means that the car's computer
has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #6.

Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

Causes

A code P0306 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Feb 15, 2010 | Dodge Durango Cars & Trucks

1 Answer

1994 Silverado stumbles on acceleration when cold


Is the check engine light on? If it is, take the truck to an autoparts store and have them use a scan tool to retrieve the fault code(s) stored in the computer. I would suspect a faulty throttle position sensor or bad EGR valve, but the code(s) should narrow the problem down. Sure hope this helped.

Jul 20, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Stumbles and backfires on acceleration


Check the distributor shaft. They have a history of developing finite cracks that causes the condition your describing. Let me know if I can help you with any other info.

May 16, 2009 | 1993 GMC Jimmy

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