Dealer performed a recall on the flaky Wireless Ignition Node and we got three nice, new replacement key fobiks at no cost, which was nice. I also heard the new Chrysler Pacifica has similar issues. They told us they were aware this issue and were reviewing it, and suggested us to remove all other keys from key chain. When we brought it back to our mechanic after the reflash, he double-checked that the 1 plug was working by using a spark tester on 6 to verify that it was working, and then swapped out 1 and 6 and then retested the plug at 6 and that plug was working as well. Also follow the fault code diagnostics. I have all receipts for all parts replaced due to this defect.
I am now thinking that I will need to decide between an actual diagnosis and fix or a complete engine replacement because the engine replacement would end up costing less than a possible diagnosis and cure. It would be masked at higher rpms and driving noises. The van has a little over 100,000 miles on it. Not very many valve-related problems on these engines posted here, but I do recall a number of months ago someone reporting a broken spring. No warning, just noticed during routine maintenance.
It was replaced and was repaired again in the same month with a different part that had to be ordered. Dealership replaced cylinder head under warranty. It now has a more pronounced tick at idle, and under load, I can now hear the tick as well. The dealer tried to tell me they didn't hear it. Again, this may allow air in the system, slowing coolant flow to the heater core. That thread had pictures of the cam with visible damage to the lobes. After prior repair, engine was missing, and finally fouled a spark plug.
I got the run around about we are doing everything to repair your vehicle. Additionally, it sounds like the engine runs fine at higher rpm so the valves must open well. Serpentine belt replace, and tune up. I third the suggestion of a leak-down test. I replaced all spark plugs in August, and my mechanic replaced the 1 plug in November and re-checked all the other plugs.
We put in some upper engine cleaner to see if we can burn some carbon off. Replaced thermostat which fixed the issue. It looked like they were not heat treated hardened correctly. Engine will eventually start and run fine. Push the power steering hose back don't crack it off your tank! This was all done and the misfire was still there with the Check Engine Light still on. Both mean trouble for your engine's combustion chambers, and both can cause a check engine light.
The shop flushed the heater core, replaced the timing cover and installed a new 195-degree thermostat. They told us they were aware this issue and were reviewing it, and suggested us to remove all other keys from key chain. After we picked it up, it still leaked, and they tried again, finding a second leak in the fuel line. I had a boat engine inboard 4 cylinder which suffered a bent valve in one cylinder due to minor water intrusion through the exhaust stream. I think it has to do with the electrical system, or perhaps the ignition system and key fob recall. The new one was a Standard, made in Mexico.
There was a Technical Service Bulletin from Chrysler on this issue that said to change all the plugs and wires and then reflash the computer. The failure recurred on multiple occasions. I added water and topped it off. New part 4593888-aa valve e 140380 and 5277928 gasket 140620. Waterpump needed replacement along with new belts, pulleys etc. I could have saved it if I'd acted when I heard the sound. Lots of troubleshooting, but finally figured out that spark plug had shorted to ground.
I think it must be the lifter, spring, or valve. I have a hard time believing it's a roller cam. Does that imply an injector issue, a spark issue. I stay off interstates because of this, and have spent more time looking behind me for possibly getting rear ended. Apparently common after filter changes. Suddenly wouldn't start, engine lights on.
This may be the tic you hear at idle. Carboned-up tubes weren't really a problem for Chrysler. The check engine light will most likely come on, and you will also notice rough idling or a drop in power. There was a Technical Service Bulletin from Chrysler on this issue that said to change all the plugs and wires and then reflash the computer. A chemical test for the presence of exhaust hydrocarbons in the coolant might confirm a head gasket issue. Vehicle has never been exposed to any extreme weather condition, water, salts, or other items that might impact the vehicle.
After I pulled the head and had a valve job done, it idled and ran fine afterwards. This was frightening and very inopportune. Appointment made to leave van with dealer to repair. How can a poor valve train result in a miss-fire? Dealer will pay for part. Your hybrid-powered vehicle has both a small gasoline engine and an electrical motor drive system. The inert gases sent back to the cylinders have already been through combustion, which makes them act as an absorbent for heat generated by spark ignition.