NHTSA — Engine And Engine Cooling Problems

4.2

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
27,667 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2009 Mercury Mariner engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2009 Mercury Mariner:

Unsubscribe any time. We don't sell/share your email.

2009 Mercury Mariner Owner Comments

problem #7

Jul 312014

Mariner 4-cyl

  • 67,480 miles

A D V E R T I S E M E N T S

Car suddenly went into limp home mode.

- Quincy, FL, USA

problem #6

Aug 032009

Mariner 6-cyl

  • 2,300 miles
Within the first months of owning the vehicle, it staled randomly. I could be driving or idling and the car stalls. Ifi put in neutral or park, it was easily re-started. I have had the dealer look at it several times the problem still exists. Nothing showed on the computer.on many occasions starting in 2010, the vehicle hesitates when shifting. When I would accelerate after coasting; w aiting for a light to turn green, trying to leave a stop light or sign, or after making a turn, there was a lull where the vehicle was unresponsive. It then kind of lurches into gear. The dealer told me that's the way the 6 speed automatics worked and I should always come to a complete stop. This past weekend 2-3-13 was the icing on the cake. I took the car down to the shore to have a leisurely weekend B4 surgery. I started the car and the engine light came on. I followed what it said in the manual and the light did not blink 8 times. I performed the mixed city and highway driving followed by 8 hours or being parked, the light came on the next morning the first thing that happened was that the rpms went very high and it lurched into gear. The car stalled twice while I was doing about 35 mph. I threw it in neutral and it started right up. Driving home, the engine light was not on but no dash lights, radio etc after about 5 minutes and noticed they came on. This happened twice. I had the heat on floor and front vents at 74 & at 1 point it felt like A/C was on. I filed complaints with (NHTSA) with no response. I see many of the same complaints I have on NHTSA that are unresolved. I have stage 3 cancer I have been battling for 9 yrs this situation is making me feel like the car is more dangerous than the cancer I am fighting. I'm putting myself at risk by driving it.

- Bound Brook, NJ, USA

problem #5

Apr 232012

Mariner

  • 38,000 miles
My vehicle started leaking fluorescent oil from behind the radiator. Apparently, it's the condenser. I have been told that the radiator lines run through the same system, and that if it is not repaired my transmission will eventually fail. This failure was explained to be the transmission locking up, and they said if I'm going over about 30 mph it will be very dangerous. I am about 2,000 miles out of warranty, and the emails I have sent to Ford only get a response that they will be happy to take my money and fix it. Within a few months of buying it, the intake manifold had to be removed to repair something. Then, a transmission solenoid. Then, it was shifting funny -because it had very little fluid-noone could explain why. The vibration in the gas pedal at 42 mph "could not be verified. " the manufacturer was apparently out of satellite receivers, so they just didn't put one in...the lack of quality overall proves that the length of the warranty is to prevent them from costly fixes...and my "long term investment " makes me feel like I'm putting mine and my family's health at risk by driving it. I spent every dime I saved in iraq on this pos because I knew I wouldn't be able to afford another vehicle until I'm out of medical school.

- Indianapolis , IN, USA

problem #4

Aug 162011

Mariner 6-cyl

  • 20,000 miles

A D V E R T I S E M E N T S

The vehicle stalls randomly. I may be driving slowly or idling and the car stalls. This has happened at yield signs, red lights and going down hill. This is very dangerous. One time at a right signal arrow it stalled going up a slight incline and I almost got hit from the back. It is easily started again by putting the car in neutral and turning the key. I brought it to the dealer because the car wouldn't start and had to be jumped. They replace the battery and blamed the battery on the problem. It is still happening and I am bringing it again.

- Bound Brook, NJ, USA

problem #3

Apr 172011

Mariner

  • 16,530 miles
Coming to red light one car in front of me. I pushed down on brake petal and it was hard to push down. Engine revved up to over 5 RPM's and car wouldn't stop finally I put car in neutral and engine went back to idle position. Almost rear ended car in front of me. Took Mariner to dealer who wasn't very helpful because he never heard of this before & wanted to know if I wanted to leave Mariner there. Also ask if I had my foot on the gas petal instead of the brake. Dealer was unable to verify concern so they replaced canister purge valve. Have also had transmission problems with this Mariner that I believe still exist. Filled out surveys and was told manager would call but no one ever contacted me. Very unprofessional dealer.

- Howell, MI, USA

problem #2

May 022011

Mariner 6-cyl

  • 32,000 miles
The vehicle stalls randomly. I may be driving or idling and the car stalls. It is easily started again by putting the car in neutral and turning the key. I have had Ford look at it several times and they first changed the battery and then second changed the gas filter. The problem still exists.

- Millington, TN, USA

problem #1

Sep 102009

Mariner

  • 17,360 miles
Engine stalls and pick-up is wobbly.

- Denham Springs, LA, USA

Not what you are looking for?