1998 Oldsmobile 98 Engine cooling Problems

“My 1998 Oldsmobile regency was losing coolant. I could not see a visible leak. The check engine indicator light came on, so I took the vehicle to be serviced. The mechanic found the upper intake (plenum) to be leaking the coolant into the engine (cylinder #3.) the leak was caused due to the fact that the intake plenum is made of plastic. I intend to send Oldsmobile a copy of my bill which was $533.32. Why would a company make a part such as this out of plastic? …”

“Bought my 1998 Oldsmobile regency in july of 2005 with 78000 miles on it. March of 2006 the check engine light would come on and go off. The coolant was bone dry upon inspection by self. There were no visible leaks. I took it to my mechanic who had to replace the plenum at a cost of $533.00. The plenum had cracked and coolant ran into the #3 cylinder. I then had to have the fuel injectors cleaned at the dealer who charged me $170.00 for that job. Now I have a problem with the anti-theft lock system. My security light keeps coming and going and my car won't recognize my key. …”

“I own a 1998 olds regency with 62000 miles on it. This car has the standard 3.8 liter v-6 which has been in production for probably 30 years. I noticed recently the coolant reservoir level was slightly down and added coolant to bring it up to level. Two weeks later my engine temperature was slightly high so I checked the reservoir level again. The reservoir was dry and I couldn't see any coolant in the radiator. I called the local dealership, added distilled water and got it there. When I arrived there was coolant leaking out of the intake manifold. …”

“Intake manifold, made of plastic, ruptured dumping coolant into cylinders. Resulted in instantaneous stoppage of engine and loss of power steering. Could easily have LED to wreck. Mechanic at first GM dealer contacted diagnosed problem sight unseen as it is a known common problem. Gm strongly suggested having work done at a dealership so they could make adjustments to the repair bill. After having the vehicle towed to a dealer, no adjustments were made, towing bill was exhorbitant, and repair bill was 30% higher than quoted by independent repair shop. …”

“Consumer stated the shifter shaft would slide to 2nd gear and not click to 1st,the dealer found a loose nut and tightened it on the shifter shaft and adjusted the cable. Consumer feels this is a factory defect. The dealer also fixed a loose cradle bolt because the consumer heard a clunk noise after braking or when starting the vehicle.”