Tl*the contact owns a 1997 mercury grand marquis. The contact stated that while driving 65 MPH, the service check engine light illuminated. The vehicle was taken to the dealer where they diagnosed it stating that the intake manifold failed due to the structure. The manifold was replaced at the owners expense. The failure mileage was 47025 and the current mileage was 47050. Updated 11/24/10
1997 Mercury Grand Marquis: check engine light
6 of the 315 complaints about the 1997 Mercury Grand Marquis describe check engine light.
- owner complaints
- 6
- of this car's complaints
- 2%
- typical mileage
- 81,000
- recalls
- 0
Check engine light by model year
What owners say
Dt: the consumer owned a 1997 mercury grand marquis. The plastic intake manifold cracked which caused the vehicle to overheat. There was also some smoking. The consumer stopped and added antifreeze. The service engine light came on, and the temperature gauge went all the way to hot. Consumer was out of town and she had to find a local mechanic as there was no dealerships nearby. The vehicle had to be driven, and then stopped to cool and add water. There were no tow trucks in the area. The vehicle was fixed. It was replaced with a metal intake manifold. The consumer also stated that shortly after the vehicle was purchase both front windows needed new motors. *ak
While driving mil code p0420 set. Ford tsb 03-24-5 indicates PCM reprogramming rather than replacement of catalytic converters required. Despite being within emissions warranty coverage period dealer charged $119 for this work, claiming emissions warranty did not cover this work. Defective programming of PCM to cause the check engine light to come on, requiring a visit to dealer. Can't pass emissions test with light on, should be against the law. In any case the reprogramming of the PCM should have resulted in no charge. This failure resulted in a mandated, due to state emissions testing, visit to dealer and a charge for service to fix a manufacturing defect.*ak the PCM was reprogrammed, according to dealer, and currently light is off. It is very easy to program the PCM to send erroneous codes at any time, especially when out of warranty, allowing the car dealers to create a cash flow they might not otherwise have. This should be illegal!
While driving engine light came on and remained on. Could hear a knocking noise coming from under the hood. Had taken vehicle to dealership, and mechanic indicated it was the catalytic converter, but the problem had not been repaired.
While entering onto the highway from a service road, smoke/steam began coming from underneath the hood, and we began to smell the antifreeze as it burned off the engine and manifold. The engine light came on, and engine temperature guage began to rise rapidly. Luckily, I was able to drive to a nearby ford dealer. The repair guy looked under the hood and without close examination told me that the intake's base was made of plastic and that it had failed and began leaking engine coolant. The leak was right behind the alternator. He said that it is a "common" problem and that he had seen five such incidents in recent months. He did explain that ford recognized the problem and had come out with a replacement part with an aluminum base. The total repair bill was $816.56 - no offer to replace n/c because of a known defect. The repair guy did say it is a common problem and ford should do something about it.
While driving approx. 55 MPH and without prior warning check engine light appeared on the dashboard, and antifreeze was leaking from underneath the vehicle.
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
- Malfunction indicator lamp (MIL) on with diagnostic trouble codes (DTCS) P0420 and/or P0430
- Some vehicles may exhibit an intake manifold crossover (first runner) coolant seepage condition
- Some engine assemblies with aluminum cylinder heads repaired in-vehile have been found to leak coolant...
- Engine oil system priming procedures, service tips for reports of premature engine failure
- Some vehicles may exhibit vacuum or air leaks in the intake manifold and / or engine system causing...
- Some vehicles may exhibit a fead belt jump-off toss
Related recalls
No recalls on record for this model year.
Questions about the 1997 Mercury Grand Marquis check engine light
Is check engine light a common problem on the 1997 Mercury Grand Marquis?
6 of 315 owner complaints about the 1997 Mercury Grand Marquis (2%) mention check engine light. The model year with the most reports is 1996.
Is there a recall or service bulletin for this on the 1997 Mercury Grand Marquis?
There are 0 recalls and 19 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 1997 Mercury Grand Marquis
Overheating 27Headlights 16Adaptive cruise 15Ball joint 14Brake failure 10Engine failure 8Fire or smoke 7Door locks 6
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