Tl* the contact owns a 1999 mercury grand marquis. The contact stated that the vehicle started stalling with the illumination of the check engine warning light. The vehicle was taken to the dealer. The dealer advised that the transmission would need replacing. The vehicle was repaired. The manufacturer was contacted and stated that the vehicle was not under recall. The failure mileage was 120,000 and the current mileage was 126,000.
1999 Mercury Grand Marquis: check engine light
5 of the 164 complaints about the 1999 Mercury Grand Marquis describe check engine light.
- owner complaints
- 5
- of this car's complaints
- 3%
- typical mileage
- 100,250
- recalls
- 0
Check engine light by model year
What owners say
While driving, (at any speed)the car's engine shut down several times. Each time I heard a "beep" and warning lights came on- check engine, traction control and ABS. After a minute or so, the engine would start normally. The engine shut down 6 times ! Each time I heard the "beep" and warning lights illuminated including traction control and check engine lights. I was on my way home with my newborn in the car,it just cuts off, and it nearly caused an accident on the highway as many other cars almost ran into me because the car shut off while I was driving on the highway. This is a very dangerous condition, especially as power steering and power brakes are lost on shut-down. I am literally afraid of driving my vehicle as no one knows what is wrong with my vehicle. This needs to be addressed asap as someone could get seriously hurt or killed. Including children!....by the way, this has been happening all week.
During normal operation of my car, the check engine light came on and stayed on. I had the engine light codes read and it indicated that two cylinders were misfiring. I took the car to a service shop to have the spark plugs changed. I was told that the intake manifold had developed a crack which was allowing coolant fluid inside the manifold cavity and this is what was causing the cylinder misfire. The car is a 1999 mercury grand marquis with a 4.6 ltr. Engine. The intake manifold is made of a plastic material and tends to crack next to the thermostat housing. This is exactly where the intake manifold on my car cracked. I have since found out that the ford motor co. Issued a recall bulletin to their ford and lincoln mercury dealers in december 2001 advising them of the defect. Subsequently, certain favored fleet owners of mercury marquis and ford crown victoria automobiles (police, limo and taxi companies) were notified of the recall. "civilian" owners were excluded. I owned my mercury grand marquis at that time and was not notified of the recall. My exclusion from the recall notification resulted in my being exposed to the potential fire hazard of the cracked intake manifold, as well as the inconvenience and considerable expense of having to have the defective manifold replaced. Because of the selective recall that ford motor co. Made regarding defective intake manifold, a class action lawsuit was filed against ford motor co. On behalf of excluded owners and ford motor co. Had to make restitution to such owners. I was not a party to the lawsuit because I was not made aware of my status as a wronged owner. I would like to know why the nhtsb did not require that ford motor co. Notify me about the recall to replace the dangerous defective intake manifold on my car?
Tl*the contact owns a 1999 mercury grand marquis. While driving at an unknown speed, the vehicle hesitated, stalled, and the check engine light illuminated on the instrument panel. The vehicle also began to loose coolant. The vehicle was taken to a dealer and they discovered that the intake manifold was cracked. There was no recall on the intake manifold. The current mileage was 88,000 and failure mileage was 87,500.
1999 mercury grand marquis ls 4.6l (1) drove vehicle in a normal way, commuting from home to work daily. No speeding. In the mornings properly wait for 10 minutes to warm up the vehicle's engine prior to driving. Kept proper maintenance schedule by ford/mercury dealership. Never brought up to my attention of the possible default this part may cause down the line. Had a complete coolant flush for radiator. Replaced with new coolant. (2) misfire in cylinders 6 + 2. Check engine light on. Small amounts of coolant leakage onto top part of engine, profusely around the spark plug chambers. Coolant come in contact with alternator affecting check battery light to go on. Vehicle showed signs of intense shaking at idle and at normal driving conditions within 1 hr after check engine light came on. Vehicle is a 199 mercury grand marquis ls 4.6l. Vehicle could not be driven w/o being extremely shaky while driving. Hesitation present. On cold days, small presence of coolant traces were found inside the spark-plug pits along side the ignition coils and at times small vapor came from inside the engine noticed from inside the driver's seat coming from inside the hood causing concern. I found the following from the following ford parts website: http://www.1aauto.com/1a/intakemanifolds/-/-/1aeim00012. "the original intake manifold, due to the design, has an abnormal tendency to crack, leading to overheating and in many cases complete engine failure and/or damage to other parts of the car's engine. This new and improved intake manifold is designed to eliminate those problems!". (3) dealership charged me over $1500.00 for replacing the intake manifold, spark plug and ignition coil for cylinder #2 plus an oil change and filter. I requested old parts back and only the spark-plug and ignition coil was returned to me.
Service bulletins that may apply
- Some 1997-2008 vehicles equipped with a 4.6L 2V, 5.4L 2V, or 6.8L 2V engine--spark plug thread repair...
- Extended coverage program 05N04 - extended coverage for composite intake manifold
- Wds cop kit diagnostic tip - coil on plug (COP) ignition systems - engine misfire or rough running
- Engine misfire or running - coil on plug (COP) ignition systems - wds cop kit diagnostic tips
- Engine misfire or rough running condition with coil on plug (COP) ignition systems may be more accurately...
- Revised cooling fan motor available
- Service cylinder head gasket for 4.6L applications
- Some vehicles may exhibit an intake manifold crossover (first runner) coolant seepage condition
Related recalls
No recalls on record for this model year.
Questions about the 1999 Mercury Grand Marquis check engine light
Is check engine light a common problem on the 1999 Mercury Grand Marquis?
5 of 164 owner complaints about the 1999 Mercury Grand Marquis (3%) mention check engine light. The model year with the most reports is 1996.
Is there a recall or service bulletin for this on the 1999 Mercury Grand Marquis?
There are 0 recalls and 31 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 1999 Mercury Grand Marquis
Headlights 17Ball joint 8Stalling 7Pulling 7Tire blowout 6Overheating 5
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