Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome! My name isCustomerand I can assist you with your question. Are you looking for some possible causes or would you like me to walk you through this diagnoses?
Hello and good morning! I can help you figure out the caust of the problem. But first, it needs to be diagnosed. Would you be wiling to speak on the phone? I do work all day today but will be on line later tonight. We can talk on the phone then or we can continue on this page for as long we need to until we get to the bottom of this problem. I will say that a phone call will go much faster helping get to the bottom of the problem.
Hello and sorry for the delay! A phone call is extra but I can send it over for the lowest amount possible which is $5. Is that going to be OK? I will be available for the rest of the day today and tomorrow.
No problem. I suspect a base engine mehanical problem. Either the valve timing is incorrect or the intake/exhaust is plugged.
What is the engine vacuum at?
There is the problem. Thats too low.
Send me a picture
Hello! It'sCustomerfrom just answer.
I am just checking in to see if you need any further assistance?
Let me know!
Yes sir. I have seen this many times. Just like I mentioned before, plugged exhaust or incorrect valve timing are the most likley causes.
You cant rely on the oxygen sensor readings if the exhaust is plugged.
What is the exhaust back pressure at?
No, manifold pressure is vacuum. Exhaust has pressure. It there is too much pressure that is a problem and will cause a restriction which can and will cause this problem.
Can I please get the VIN?
Hello! This problem is due to an engine breathing problem and possibly incorrect valve timing. It is also related to the low engine vacuum. I am still waiting for a picture of the engine vacuum. A video would be better. I would be willing to bet this is related to the burned up ignition coil.
Right. I suspect it is related to this issue (oscillating at 3500 rpm).