Question about 1998 Oldsmobile Regency

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Car is overheating (or trying to) whenever you stop at a light or signal. It seems to cool off somewhat again if you maintain highway speeds. I thought this probably meant the fans weren't working. I jumped the larger one directly to the battery and it seems to work fine. Not sure which relay is for the fan or where the coolant temp sensor is. any help is appreciated.

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Hello. Check your serpentine belt. If it is worn or stretched due to common wear and tear you will have these symptoms. J.

Posted on Jul 10, 2010

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We borrowed our daughter's Hyundai Santa Fe to make a trip to the mountains on a 105 degree day. It was doing great on mountain highways until we stopped after about 3 hours.


May be a bad fan or thermal switch not working. The a/c condenser sits in front of the radiator. It may be that the load on the engine going up the mountain is too much for just the air blowing across it to keep it cool, and the car shuts the a/c off to try and keep engine temp down. Cruising along on level ground is enough to keep things cool. Going up the mountain means more engine heat and probably reduced speed, which reduces air flow, especially if a fan isn't working.
Let car cool off, start engine and let it warm up without driving. Monitor temp and fans. When temp gets about normal, look for fan to kick on. Then when turning on a/c, look for the other fan to kick on. Don't let engine overheat. If one or both fans don't come on, start there. Check fan motor not locked up, relay working, fuse/wiring good.

Jul 07, 2017 | Hyundai Santa Fe Cars & Trucks

Tip

Save Money on Gas/Petrol


  1. Avoid idling. While idling, your car gets exactly 0 miles per gallon while starting the car uses the same amount as idling for 6 seconds. Park your car and go into the restaurant rather than idling in the drive-through. Idling with the air conditioning on also uses extra fuel. Also, avoid going so fast that you have to brake for someone. Whenever you brake, you waste the gas it took to get going that fast.
  2. Drive at a consistent speed. Avoid quick acceleration and hard braking. Cruise control will keep you at a constant speed, even when going up and down hills.
  3. Avoid stops. If approaching a red light, see if you can slow down enough to avoid having to actually stop (because you reach the light after it is green). Speeding up from 5 or 10 miles per hour will be easier on the gas than starting from full stop.
  4. Anticipate the stop signs and lights. Look far ahead; get to know your usual routes. You can let up on the gas earlier. Coasting to a stop will save the gasoline you would otherwise use maintaining your speed longer. If it just gets you to the end of a line of cars at a red light or a stop sign a few seconds later, it won't add any time to your trip. Ditto for coasting to lose speed before a highway off-ramp: if it means you catch up with that truck halfway around the curve instead of at the beginning, you haven't lost any time. In many cities, if you know the streets well, you can time the lights and maintain the appropriate speed to hit all green lights. Usually this is about 35 to 40 MPH.
  5. Slow down. Air resistance goes up as the square of velocity. The power consumed to overcome that air resistance goes up as the cube of the velocity. Rolling resistance is the dominant force below about 40 mph. Above that, every mph costs you mileage. Go as slow as traffic and your schedule will allow. Drive under 60-65 since air grows exponentially denser, in the aerodynamic sense, the faster we drive. To be precise, the most efficient speed is your car's minimum speed in it's highest gear, since this provides the best "speed per RPM" ratio. This is usually about 45 to 55 miles per hour.
  6. Use A/C only on the highway. At lower speeds, open the windows. This increased the drag and reduces fuel efficiency, but not as much as the AC at low speeds (35-40 mph). The air con - when used a lot - is known to use up about 8% of the fuel you put into your car.

on Jul 31, 2010 | Acura Integra Cars & Trucks

2 Answers

What is the use of thermostat? is it true that by removing the thermostat, it will help in reducing overheating?


a thermostat maintains the engine to a pre determined temp which is most efficient for operating.by removing stat you will never reach/maintain the correct temp,so use more fuel,and cause more engine wear.to reduce the risk of overheating,keep the car maintained correctly,and if towing/climbing high terrain,fit a secondary electric fan in front of the radiator.fitted with a on off switch for when not needed.......(normal useage).

Jul 14, 2010 | Ford Mustang Cars & Trucks

1 Answer

I have a 1993 Saturn SL that the service engine soon light comes on after driving at highway speed for 3 or 4 minutes. It goes out after not maintaining hiway speed. When I go to check for codes the...


It seems like it almost has to be one of two things. Either it's getting a little hotter than it thinks it should or it thinks it's not getting the right air fuel mix at those speeds. If, after slowing from hwy. speeds, the light lingers for a little, then goes out, I'd investigate option 1. If it goes out pretty much as soon as you let off the gas. Option 2. If you're pursuing the heat issue, flush the radiator thoroughly. Make sure the fan is working right.
Engine lights can be finicky. If the car runs fine and doesn't seem to be having any problems other than the light, it might be nothing important.

Nov 17, 2009 | 1993 Saturn SL

1 Answer

Transmission slips and reverse stopped working


you need your transmission rebuilt the clutches are slipping

Sep 28, 2009 | 2002 Chevrolet Tahoe

1 Answer

A/C only works while I am driving


This is a characteristic of R-134a. The cooling efficiency at idle has improved slightly over the years with design changes to the hardware but performance still lags that of R-12.

Due to small size radiators and thus reduced coolant capacity in use in nearly all vehicles today, most manufacturers program the pcm to turn the cooling fan on when it sees an a/c "on" signal. This is to prevent overheating of your vehicle as well as keep air moving across the a/c condenser to improve cooling efficiency as much as possible.

While definitely frustrating, the symptoms you describe are not unusual.

Jun 23, 2009 | 1999 Volvo V70

1 Answer

3.5 olds intrigue overheating. Why?


Replace the radiator, and flush the system out. Don't use Dexcool in the system as this is the source of many cooling problems on GM's.

Jun 18, 2009 | 2000 Oldsmobile Intrigue

1 Answer

92 cutlass ciera stalls when stopping after driving on highway


bad torque convertor solenoid , unplug the electric connector on transmission u can drive your car fine and save yourself a $1000 repair

Jun 01, 2009 | 1992 Oldsmobile Cutlass Ciera

1 Answer

Heating problem


I've had that problem with a customers car before, but I changed the water pump, and it seemed to fix it. A lot of times the water pump, can't pump fast enough when it's at idle. Try it.

Mar 02, 2009 | 1994 BMW 3 Series

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