2018 Chrysler Pacifica Engine problems

The check engine light came on, and the codes indicated a cylinder 5 misfire. We replaced the spark plugs and coils. Codes went away for a short time, a couple of days. Then it was noticed that the coolant was leaking somewhere. Nothing on the ground. The mechanic confirmed that coolant is in cylinder 5 and that a head gasket is leaking. The cost to replace the head gasket is $6500, plus car rental fees of $450/week. The head gasket is on backorder and was supposed to come in on October 30th. There is no word and when and if it will arrive. This is an obvious issue since there are a shortage of head gaskets available! We have all of the other parts except the head gasket.

This issues has been ongoing as the vehicle makes a loud clunking noise and the steering wheel shakes and its almost like it jumps while in a slow turn. The vehicle loses power steering while going down the rod and it's like the steering wheel gets stuck at the 11 and 2 position and you have to manually force it to come free then the power steering comes back. during low-speed turns is when you feel the vibrating and clunking. I have checked all of the steering components and the only thing i cannot physically...

I originally took my car to Reedman toll in 2021 due to frequent issues with the batteries needing to be replaced and the car not starting. At the time I was told it was related to a recall, and they fixed it. However, over the last year I have continued to have various problems with the car. The batteries were replaced numerous times. The check engine light and stop start unavailable light going on randomly. The car also started having electrical issues like the radio would just turn off on its own, or the...

Blown Head Gasket. Having the unknown blown head gasket issue may have caused extreme damage to other engine components. Vehicle has less than 145,000 miles.

The contact owns a 2018 Chrysler Pacifica. The contact stated that while driving at 30 MPH, the engine seized. The vehicle was able to restart. The dealer was made aware of the failure. The contact was informed that the repair was not covered under an unknown recall associated with the failure because the VIN was not included. The failure mileage was approximately 38,000.

Head gasket issue. Known issue with this model. Costly repair "The primary reason is inadequate construction techniques, design, and materials. There isn't a preventive solution for this issue. If it occurs, it will be dealt with at that time." [[redacted]] [[redacted]] [[redacted]] [[redacted]] Cell INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

First, I had camshaft related error which turned out to be a bad intake camshaft on bank 1. The Camshaft, all rocker arms, lifters, camshaft adjuster and all VVL actuators have been replaced with genuine mopar parts. 3 weeks latet, the head gasket on bank 2 failed, caused coolant to leak into the cylinder. The van has 89k miles, very clean and always maintained on time.

Head gasket blown! Vehicle is under 100k miles, never overheated, service properly maintained. When researching symptoms, I discovered I am one of hundreds if not thousands of 2017-2018 model Pacifica owners who have suffered this issue. Heads are known to be faulty and Chrysler will not address the root of it. It's very possible this could lead to a locked engine while driving and cause harm to driver or others.

We had to replace both head gaskets last July with only 70,000 miles on the vehicle. The repair cost was 4,600.00. This August, we started experiencing coolant leaks again. We discovered the cylinder heads are warped now. This was checked last year and it was not the main issue then. It is extremly disappointing that now at 80,000 miles we are looking at another 5000.00 repair. There needs to be a recall on the engine cylinders and head gasket.

The head gasket failed at 89,000 miles. The engine gave P0305 Cylinder 5 misfire codes and would run rough causing difficult to drive in standard traffic flow. There are borescope pictures of coolant in cylinder 5. We stopped using the vehicle until the repair can be completed. This appear to be a WIDESPREAD problem for 2017-2019 Chrysler Pacifica which are numerous on the road and could be hazardous if these vehicles failed on regular roads and highways. See [[redacted]] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Blown head gasket

This report is for a 2018 Chrysler Pacifica with 90,100 miles. The check engine light came on in July 2026. It was a cylinder 5 misfire. The spark plugs and ignition coil were replaced. The check engine light came on again about 2 weeks later (cylinder 5 misfire again), was dismissed and reset by the shop, and came on again about 2 weeks later. This time, the shop diagnosed cylinder 5 misfire due to "cylinder 5 is leaking coolant into the cylinders." They quoted $12,000 for engine replacement. Went for 2nd opinion...

Failed head gasket that put vehicle in compromised working condition on the roadway - check engine light flash, poor and inconsistent engine running. First indications were 5-10 seconds of rough idle after startup when sitting overnight, then p0303 check engine code for cylinder three misfire as well as loss of coolant. Independent shop confirmed issue and replaced head gasket. Problem appears to have re-occurred after 2 years and 20000 miles with similar indications. Same shop advised likely engine block or cylinder head defect or damage and would not do any tear down or repair short of engine replacement.

The contact owns a 2018 Chrysler Pacifica. The contact stated that while driving 15 MPH, there was white smoke coming from the front of the vehicle. The check engine warning light was illuminated. A dealer was contacted. The vehicle was taken to a dealer to be diagnosed, and it was determined that coolant was leaking into cylinder #3, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the vehicle warranty had expired. The approximate failure mileage was 130,000.

I was driving to the dealership and stopped at a light and the start stop button turned off completely. Brake locked and wouldn't start back.

Engine fail with less than106000 miles. Replace brand new engine November 2025. Steering rack has intermittent power issues. It started having steering issue around July 2026. It makes the steering hard to turn during highway speeds.

Lots of power going up steep hills. Especially while AC is on. Almost complete loss of power yesterday with vehicle behind me.

Electrical glitches, where speedometer screen will go out of focus, glitch. Also transmission is going. Loud hum, catching as it changes gears and hesitates when trying to accelerated into the highway.

While driving, the vehicle unexpectedly shut off without warning. The engine stalled while the vehicle was in motion, causing an immediate loss of acceleration and power. This created a serious safety hazard in traffic. The issue is consistent with the condition described in Safety Recall U01 for 2017 Chrysler Pacifica vehicles involving the Powertrain Control Module (PCM). However, this vehicle's VIN is not included in the recall despite exhibiting the same symptoms.

I bought my 2018 Chrysler Pacifica Touring van in February 2018 brand new from Burlington Chrysler, Burlington, NJ. In May 2026 the check engine light came on and I brought the van to my mechanic. The code he pulled was for #5 cylinder. I had the repair done. A month later in June of 2026 the che ck engine light came back on and this time the code was for the catalytic converter. On July 21, 2026 I brought the van back to my mechanic for an oil change and replacement of catalytic converter. When they put the van...

Engine only stalls out when stopped on roadway while driving. Vehicle also does not start up after it has been driven and is parked. It takes 10 minutes or longer to get the vehicle to start again. Check engine light comes on every time when these two situations happen, which it happens periodically. Sometimes it's 2-3 times a day, sometimes, once every two days. Once it starts back up the engine light turns off. I've taken it to 2 reputable shops and neither of them found any issues as they could not replicate the issue, the engine light is not on, and there are no codes displayed. I now have a date for a inspection which includes a test drive with the dealership.

I had my cylinder heads, valves and head gasket replaced over a year ago and drove 15k miles and i am having the same issues again. The Dealer is trying there very best not to honor my valid powertrain parts warranty like saying the head gasket is only covered for 12 months and denying my claim but my cylinder heads and top end have a 3 year 100k mile warranty since they were installed not to long ago and they are trying to deny my claim using the head gasket. I have seen and read online that these engines all have similar problems with the head gaskets.

Blown head gasket cylinder #3. Same as reported by many on other forms. 108000 miles well maintain. Started throwing a code 2 weeks ago.

I purchased a used 2018 Chrysler Pacifica with the 3.6L V6 F DOHC 24V engine in October 2025. The van had 97,000 miles. Shortly after I purchased it I noticed the engine had a rough idled. It now has 107,000 miles and the rough engine has continued to get worse. What I noticed is when I first started it the engine was rough and vibrated. Once I started driving it was not as noticeable. I decided to take it to a mechanic to see what the issue was. I thought it could be electrical. Before I could get it to the...

I own a 2018 Chrysler Pacifica equipped with the 3.6L Pentastar V6 engine. At approximately 81,600 miles, the vehicle developed a check engine light and a Cylinder 5 misfire (P0305). The vehicle began exhibiting hard starts, rough engine operation during cold starts, white smoke from the exhaust, and coolant loss with no obvious external leak. An independent repair facility initially diagnosed the vehicle and found evidence suggesting coolant intrusion into Cylinder 5. The vehicle was then inspected by a Chrysler...