Tl* the contact owns a 1998 mercury grand marquis. While driving various speeds, the engine misfired and hesitated to respond. The vehicle was taken to an independent mechanic who diagnosed that the plastic intake manifold was cracked, which caused anti freeze to leak out and damage the engine coils. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was 80,000.
1998 Mercury Grand Marquis engine problems
29 complaints (20% of all complaints for this car). Typical mileage when it fails: 102,281.
- owner complaints
- 29
- of this car's complaints
- 20%
- typical mileage
- 102,281
- crashes
- 0
- recalls
- 0
Which part fails
- Engine: gasoline7
- Engine6
- Exhaust system: manifold/header/muffler/tail pipe5
- Exhaust system1
- Engine: gasoline: belts and associated pulleys1
- Cooling system1
At what mileage
Complaints by mileage at the time of the problem.
0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+
Mercury Grand Marquis engine problems in other years
Specific symptoms reported on the 1998 Mercury Grand Marquis engine
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
Related investigations
Spark plug ejection from cylinder head
On september 6, 2005, odi received a petition requesting that the agency investigate allegations of engine spark plug ejection in certain model year 1997 through 2004 ford vehicles with triton v-8 and v-10 engines.odi received a total of 474 non-duplicative complaints on the subject vehicles where the complainant, or the dealer repairing the vehicle, reported that a spark plug detached from the cylinder and/or ejected from the engine.as of december 8, 2005, odi is not aware of any allegations where the alleged defect resulted in a loss of vehicle control, a crash, an injury, or a fatality in any of the 10,319,810 subject vehicles.in addition, odi is aware of only two incidents where the vehicle stalled without restart.information contained in the odi consumer complaints and obtained from 72 telephone interviews with complainants showed the following:(1) 99% of the complaints were on my 1997 to 2002 subject vehicles.(2) most the complainants reported hearing a loud pop while driving or upon starting up the vehicle followed by a loud, repetitive clicking or popping sound.(3) many of the complainants reported that the popping sound was accompanied by some loss of vehicle power; however, in 99% of the incidents reported, the vehicle did not stall.in the very few incidents where the vehicle did stall, most vehicles could be restarted.(4) only a small percentage of the complainants cited that they smelled gas or a slight burning smell when the incident occurred.(5) in all but a very few incidents, vehicle damage was limited to the engine.in one incident, the complaint reported that the fuel rail was damaged and replaced after one of the spark plugs ejected from the engine; however, the complainant reported that the damage did not result in any type of fuel leak or fire.in another incident, the only incident where a fire was alleged, the complainant reported that no fluid leak was observed, but that a fire resulted after the spark plug had ejected from the engine and he had restarted the vehicle and driven to another location.none of the complainants reported any damage to the vehicle hood.(6) only two complainants reported that they observed what appeared to be some drops of fuel coming from the cylinder where the spark plug had failed or on the spark plug itself; however, each of these complainants reported that there was no smoke or flames as a result of his incident.as the petitioner noted, and odi?s analysis showed, it is possible for a spark plug to detach from the engine cylinder threads in the subject vehicles.however, odi?s analysis of 474 complaints describing such incidents found only a very few alleged any safety-related consequences.none of these showed any evidence of a serious safety consequence.given the large population and relatively long exposure time of the subject vehicles, the complaint analysis indicates that the risk to motor vehicle safety from the alleged defect is very low.in view of the foregoing, it is unlikely that the federal safety agency would issue an order for the notification and remedy of the alleged defect at the conclusion of the investigation requested in the petition.therefore, in view of the need to allocate and prioritize the federal safety agency?s limited resources to best accomplish the agency?s safety mission, the petition is denied.
DP05005
What 1998 Mercury Grand Marquis owners say
Most recent owner complaints, unedited.
I observed a coolant leak around the thermostat. I found the plastic intake manifold to be cracked around the thermostat and leaking coolant. I made contact with mercury and found that there had been a recall on the plastic intake manifold in which they would have replaced the part at no charge during the safety recall campaign. I was not made aware of the safety recall and have owned the vehicle since 04/17/02 when I purchased the vehicle used from a mercury dealership. The dealership would no longer honor this recall although there are still thousands upon thousands of these engines still on the road. The all plastic manifold was replaced with an intake manifold with an aluminum crossover channel for the coolant. I was forced to replace this defective part out-of-pocket at a cost of $800. It would have been more had I not been friends with the mechanic. The vehicle had 102,281 miles at the time of the failure.
Vehicle started to buck and when I pulled my vehicle over I lifted the hood. I found anti-freeze flowing on the top of my engine. I had it towed to my local garage & they told me that the intake manifold is cracked. I did some research and found out there's a recall on this part. When I called my local ford dealer, they told me there is a recall on this part, but it's only for police and fleet vehicles only. Now that this was said to me, I was told by my garage it would cost me $1000 to fix. Something I don't have. Ford was not very cooperative about my situation and I'm very disappointed.
Tl* the contact owns a 1998 mercury grand marquis. The contact stated that the vehicle would overheat abnormally. The vehicle was taken to a local repair shop where the radiator was flushed but to no avail. The contact later inspected the vehicle and discovered that the intake manifold was fractured. The contact believed that the failure was caused because the intake manifold was designed using plastic. The vehicle was not repaired. The VIN was unavailable. The failure and current mileage was 64,950.
The plastic intake manifold in my 1998 grand marquis has cracked resulting in engine coolant fluid leak and engine failure. It is being repaired today. The car has approximately 87,000 miles. I understand that this occurs because of the material used for the intake manifold. The car is in otherwise very good condition.
Tl*the contact owns a 1998 mercury grand marquis. Whenever the contact turned the vehicle on he noticed that the check engine light would appear on the dashboard. While examining the engine he also noticed that anti-freeze was leaking onto the engine. The vehicle has not been diagnosed by the dealer. The failure mileage was 100,000.
Tl*the contact owns a 1998 mercury grand marquis. After driving 65 MPH, the contact noticed fuel leaking from the vehicle. She stated that the intake manifold cracked and she took the vehicle to the ford dealer. The dealer informed her that there was a recall on her vehicle, but they would not honor it because it was only good for seven years. She took the vehicle to an independent dealer and paid $850 for the repair. The VIN and engine size were unknown. The current and failure mileages were 113,000. Updated 12/12/2007 *bf the consumer stated the intake manifold was a defect that ford refused to pay for the repairs. The consumer stated would like to be reimbursed for repairs. Updated 12/12/07
Plastic intake manifold cracked and leaking coolant around thermostat area that squirts out under driving conditions and pools around fuel injection and contaminates electronics and serpentine belt and pulleys. Could leak to overheating and engine failure . Poor driving condition.
1998 grand marquis overheated and manifold was leaking. *ts
Dt: the caller said her car burned up in 2000. Now she is finding out about the investigation into the cruise control fires. She believes that the car should be included. At the time she was told to call the insurance company, they said to call manufacturer, and she was getting the run around. She saw on cnn and the newspaper about the current problem they are having and wanted someone to help her. There is a fire report. *ak the vehicle fire was contained to the engine compartment and dash area. *sc
Questions about the 1998 Mercury Grand Marquis engine
Does the 1998 Mercury Grand Marquis have engine problems?
Owners have filed 29 complaints about the engine of the 1998 Mercury Grand Marquis, 20% of all its complaints, more than any other problem.
At what mileage do 1998 Mercury Grand Marquis engine problems start?
The typical (median) mileage in owner complaints is 102,281 miles.
Was there a recall on the 1998 Mercury Grand Marquis engine?
There is no recall for this problem on this model year.
What year does the Mercury Grand Marquis have bad engine?
The Mercury Grand Marquis model years with the most engine complaints are 1997 (126 complaints), 1996 (86 complaints) and 1999 (33 complaints).
Other 1998 Mercury Grand Marquis problems
Steering 17Lights 16Suspension 16Electrical 15Body 10Acceleration 9Fuel system 8Transmission 8Brakes 7Tires 7Airbags 4Visibility 4Seat belts 3Locks 2Seats 1Wheels 1
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