Question about 2001 Dodge Neon

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After cleaning my 2001 Plymouth Neon engine with engine cleaner and pressure washing it the check engine light is on and the car stutters when trying to accelerate. What is going on with it?

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Never pressure wash an engine.
Electrical connections can't take the water or pressure.

In most cases, once warmed up and dried out, things return to normal.
But you need to determine which connections you screwed up.
The most common are the plug wires. You can check them with a spare spark plug, or an inductive timing light.
You could also have just blasted a vacuum hose off.
Check them all.
But you could also have caused a bad connection to the O2, throttle position, air mass, or temperature sensor.

Posted on Jul 19, 2010

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It is a chrysler get rid of it and get something thaat runs. their cars and trucks aint worth having after 60,000 miles

Posted on Jul 18, 2010


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1 Answer

Where is the kill switch located at on a 2001 Plymouth Neon?

Doesn't have a kill switch , check ASD relay in the under hood fuse/relay box . Or fuel pump relay . Does your vehicle have spark at spark plugs ? Try spraying some carburetor cleaner into the throttle plate an see if it try's to start. The ASD relay powers the injectors an ignition coils .

Feb 02, 2016 | 2001 Plymouth Neon

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I'm trying to locate the oil sending unit on a 2001 plymouth neon

How many miles on the car? I recommend hooking up a direct reading oil pressure guage. Oil level is not the only factor on oil pressure. As an engine ages, clearances and bearings wear and the pressure falls. Using too thin oil can result in low pressure.

Jan 02, 2015 | 2001 Plymouth Neon

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Check engine light on 2001 Plymouth neon, code says #4 cylinder misfire, already replaced plugs wires and valve cover gasket.

check coil pack for resistance with an ohmmeter. if one pack controls two cylinders, the values should b the same. if not replace coil pack

Sep 24, 2012 | 2001 Plymouth Neon

1 Answer

Is there an eengine fuse on 2001 plymouth neon

Nope. Check to see if the timing belt is broke. Check for fuel pressure. Check for spark. Let me know which you are missing and I'll help you get it figured out.

I’m happy to assist further over the phone at

Aug 07, 2012 | 2001 Plymouth Neon

2 Answers

Oil light stays on until you reach 2000 rpm's. Is it the Oil Sending Unit?

Oil light coming on usually means low oil pressure. IE: low oil, pump worn and possibly the sending unit. Before buying a new oil pressure switch you can try cleaning it by removing sender and soak lower part (that screws into engine) in parts or carb cleaner. Sometimes they stick and get gummed up.

Feb 23, 2011 | 1996 Plymouth Neon

1 Answer

My 2001 plymouth neon wants to cut off and the check engine light and oil pressure light comes on when I stop! When I take off it goes out why? This only happens when I stop. Otherwise it runs good! Its...

better have a shop check it out. If you have approx 90k miles on that car and the timing belt has not been replaced, replace it ASAP. if it breaks, the valves will be bent and th ecar will not be worth fixing. if it has been replaced before, then replace it at another 90k be sure to replace the water pump and tensioner at every timing belt replacement.

Nov 10, 2010 | 2001 Plymouth Neon

1 Answer

After cleaning my 2001 Plymouth Neon engine with gunk engine cleaner and pressure washing it, the check engine light is on and the car stutters when trying to accelerate. What is going on with it?

There is a good chance that water has gotten down into the holes that the spark plugs are located in which is causing the spark plugs to misfire. Carefully remove the plug wires [one at a time] from on top of the spark plugs and check for any moisture in this cavity. If you find any you'll need to blow out the moisture with compressed air. Don't remove the spark plugs as this moisture wills then run into the cylinders! Once you have removed the moisture and wiped the plug wires dry then reinstall the wires on the plugs making sure they are pushed fully in place. I usually try to avoid pressure washing under the hood as there are many critical electrical connections and electronics that are water resistant but not water proof and if they can be easily damaged if they get moisture inside of them.

Jun 09, 2010 | 2001 Plymouth Neon

1 Answer

My check eng light is on and i have a tdc which reads po551 please help me.

Code po551 is for the steering sensor. It senses steering pressure and bumps up the idle a little to compensate for lower pressure. The switch number is 5269625 and costs approx 35.00. It is threaded into the back of the steering rack and is accessible from underneath the car. Unplug the electrical connector from the switch, clean with electrical cleaner, remove and replace switch, plug in electrical connector. Disconnect the battery for a few minutes to reset the check engine light. Hope this helps.

Jan 07, 2010 | 2000 Plymouth Neon

1 Answer

Low idle

there is no adjustment that can be made. You will have to have your iac motor checked it is attached to the side of the throttle body (idle air control).it is operated by the PCM. The PCM adjusts engine idle speed through the idle air control motor to compensate for load on the engine, or changes in coolant temperature or barometric pressure.

May 10, 2009 | 2001 Plymouth Neon

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