- 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.
You said you engine oil was low 1/2 quart? was it just changed? or does it use a little between changes? Sounds like a mis fire which would have to do with sparkplugs, spark plug wires and the coil pack. I have owned a 97 grand caravan.I know yours is the next gen but drivetrain were just about the same. I had a few fuel injector wires that would cause a mis every now and then. The check engine light will be the key, There will be a code stored in there that will guide you to your answer. If you have 100,000mi on it. Its time for a tune up.As for the 1/2 quart on the oil, sometimes "lube service" Fills to the full line on oil stick. The oil filter will hold just about a 1/2 quart. So if "Lube service" did not account for this, after you start your van and check the oil it will show just shy of 1/2 quart. I would suggest getting the engine code first (mfi lamp)
I'd suspect a sticking injector--car should have set the check engine light. Read the code(s) to progress further. If the coil pack were a problem, it would not be likely to fix itself. If the codes indicate an injector problem, try an injector cleaner in the fuel--worst case, replace the bad injector. The codes should indicate which cylinder to change the injector.
It sounds like it could be a bad coil pack that is used for number 5 cylinder. It could also be a bad spark plug wire. Does the weather seem to make a difference? Try this quick check once night time comes around. Open the hood and start the engine. Fill a bug sprayer with salt water and spray the plug wire while the engine is running. If the wire is bad, you might notice an electrical arc from the wire to the engine block. The engine will probably start running rough. If this occurs, then the wire should be replaced. If it doesn't, then the coil pack can be tested with an ohm meter. I hope this information has been helpful to you. Good luck with your problem and thank you for using Fixya.com.
if you receive a code indicating ignitial coil c secondary circuit this means a plug wire that connects your ignition coil pack module to a spark plug in the motor has come loose OR has become worn out
(not likely on '05 odel) or one of the coil pack modules has gone bad. If you recently had muffler repair work done, then suspect a wire has come loose and attempt to remove and reconnect each wire to the coil pack. If not, I would recommend replacing the coil pack module that's easiest to get to and testing the vehicle after replacing it. If that doesn't do it you will have to keep replacing until it starts running properly or you will need a shop manual to indicate which one is "COIL C". It's not very likely that a wire will be worn out based on the age of your vehicle, but heat from a motor will destroy a coil pack over a matter of several years especially if the coil pack is near an exhaust pipe or exhaust manifold.
The injector could definitely trigger a misfire code, but you also mentioned that you had a mass airflow sensor code , that code code be responsible for te sluggish moment of the vehicle and rpm going up and down. However if you have a misfire onCyl#6 and the coil and the plug is good the ONLY other thing to cause a mis-fire would be the injector. To check the injector get a NOID light, you can get one at almost any auto-parts place. To use unplug injector plug from the bad injector and connect it to NOID light the light should have a steady PULSE/ligt flickering. If light flickers fine then injector is bad and will need to be replaced. If light doesn't flicker or flickers intermittently then you may have a bad wiring to that injector. Check if wiring is good, then you may have a bad cam sensor or sensor gear. Good Luck and contact if you need more help. Thanks for using FIX YA