At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
2000 mercury cougar is hestating when you step on the gas. Ichanged spark plugs wires and coil pack also changed fuel filter. check engine light is on and reads po300 multiple misfire.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Question edited for clarity and correct spelling of Cougar.
Question moved to model category.
Jeff provides a great diagnostic explanations video, and the keywords 'Don't make Assumptions', or as I call it the "Let's try replacing this" method of vehicle repair. It is expensive and doesn't work. Electronic diagnosis by a professional grade scan tool computer is the way.
RepairPalhttps://repairpal.com > ... > Mercury > Cougar > 2000
Nov 12, 2010 - I would check the fuel system first. Check for a tripped inertia fuel cut off switch in the back. Then, check for solid and steady fuel pressure ... 2 answers · Top answer: How are you determining that the spark is weak? I would check the fuel system first.
If it is getting spark I will assume the timing belt is working. You say the fuel pump is good, so what is the fuel pressure at the rail ? Are the spark plugs wet or dry ? Can you get it to try to start by using starting fluid ? You may have to get someone to check the computer for trouble codes which requires a scanner or code reader.
Okay,it could be a lot of things.......SPARK PLUGS and wiring,coil packs, egr valve erratic and changing positions, vacuum leak. Dirty fuel filter or gas cap not venting can cause problems.But those are rare. don-ohio (:^)
A diagnostic check of the vehicle will pinpoint your no starting problem,but if that isn't an option for you and you want to do the work yourself, follow these step's:
Check for spark WHILE TRYING TO CRANK THE ENGINE. If no spark is present,check to see if there is power coming from the switch during cranking. If you have spark,check to see if you are getting fuel. If you aren't getting fuel,check your fuel filter(it coud be clogged) and check ALL fuse's. If you aren't getting spark AND fuel,then check the crank sensor as it is the controller for spark and fuel delivery.
pull the leads one at a time from the coil pack. if you pull a spark plug wire and the engine rpm doesn't change and there is a weak or no spark the coil pack is likely the problem.
First, disconnect neg battery cable 10 minutes and reattach to clear codes.
Lean condition means it is not getting same fuel as other side of engine.
Since you had it scanned before, try Autozone to see if new results.
You might try a TPS switch which regulates spark and fuel feed. At lower speeds EGR starts to open-you should have code for a problem there.
Fuel pressure is perfect I hooked a guage to it
×