Question about Oldsmobile Regency

1 Answer

(1989 Oldsmobile V-6 Regency (130,000 miles) suddenly the v-6, 3.8L engine is over heating. No leaks! I can fill the overthrow bucket and the radiator before bedtime and come out in next morning and all the water is gone! And there are no indications of a leak or any water or moisture under the car, in the oil or in the street!. No steam at the exhaust when first starting the engine. I am going to replace the thermostat, because a click occurs at the driver side near the air intake) , and the passenger fan then runs. a few minutes later it stops. When it's hotter the passenger cooloing fan stops. I am going to replace the thermostate but I am not sure where it is. It looks to be a bit under the throttle body intake on the front end of the V-6 engine I filled the overflow bucket and the radiator and went to bed. In the morning there's no water anywhere in the overflow bucket or the radiator or in the engine compartment Can you tell me or send a photo of where the thermostate housing might be? Does my analysis seem logical?. Please send me by email Im off to bed now 561 358 5318 (cell) or my home cell 561 503 4584 Your help will be most helping Dennis Sklar (Fl.)

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 2,427 Answers

The thermostat is too the front of the engine,, close to the exhaust system however i dont think thats your problem.. I'm thinking a broken cylinder head gasket.. causing the radiator to pour off into the engine..

try this.. fill the radiatior with WATER,, leave cap off,, start the vehicle,, if you see water pumping back out the radiator then you have a gasket issue (cylinder head gasket).. if not,, driver around for a while with the cap off ,, if the water remains the same height then more than likely one of the radiator hoses has a micro fracture ,, this will cause the coolant to evaporate and escape in the form of steam ,, basically vanish without a trace.

let me know what happens.. maybe another expert here will have another idea.. I'll post it out in the main forum and seek assistance for you,, BTW dont post your personal info on the net like that,, its kinda dangerous..

Posted on Sep 17, 2010

  • dennisesklar Sep 25, 2010

    Micro Crack in shaft pump housing near the entrance to the housing which has no bearing (1989 with 127,000 miles )water pump shaft out of round shaft (.02 MM). With the serpentine belt loading the pump shaft housing all those miles, it caused the out of round, just enough to not drip when cold, only when hot and then it simply evaporates in the florida heat. This was a new one for this mechanic of 40 years. It was intuition that brought the answer to me, after replacing thermostat (under left front throttle body!) a new pump made of aircraft aluminum, CNC accuracy, and a stainless steel bushing and sealed and permanently packed bearing, the problem resolved. Car runs better and cooler than ever (after gapping the plugs to .06). Florida requires 50/50% water and antifreeze. Strange problem, thanks for the reply and comment of posting such personal info.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Ac relay diagram location 89 oldsmobile 98 regency

no diagram ,sorry , but usually located in the fuse/relay box in the engine compartment and the cover will have list of which is which

May 05, 2014 | 1985 Oldsmobile 98

1 Answer

Oldsmobile intrigue climate control

sound like maybe the blend door actuator is malfunctioning and needs to be replaced they are all computerized so if the actuator is not working properly it will store a code and not allow to set climat

Jan 04, 2014 | Cars & Trucks

1 Answer

1989 Oldsmobile Regency 88 - stalls and sputters

Hi All your love, Lucky boy, The vehicle is fairly old and I suspect it has a points and condenser ignition system. Renew the points and replace the condenser. Set the gap to .45 mm and then set up the firing position by loosening the distributor locking base and setting it at 6 degrees before top dead center. I think it is not a fuel problem but instead, ignition timing. Regards John

Jun 30, 2012 | 1998 Oldsmobile 88

1 Answer

Can you tell me when I should change the timing chain on my 1995 Olds 98 Regency Elite? It has the 3.8 L series II V6. I currently have 116,000 miles. Also, are there performance mufflers with...

If it has a timing CHAIN, I wouldn't bother replacing it until you need a valve job or engine rebuild. The timing chain should last quite a while, especially since it is being lubricated as the engine runs.
However, if it has a timing BELT, at 116,000 miles, you're past due.

Mar 06, 2011 | 1995 Oldsmobile Ninety Eight Regency

1 Answer

1989 Oldsmobile Ninety-eight Regency 3800. Service Engine Light. Auto x-ray scan tool says I believe (63) and EGR solenoid number three malfunction. It has started several times since. Today it is zero...

You can take the egr solenoid apart and clean the bottom of the solenoids to fix it. A failed egr valve will not keep it from starting. Check the fuel pressure, should be around 40.

Feb 01, 2011 | 1989 Oldsmobile Ninety Eight

3 Answers

My 91 oldsmobile 98 runs rough in idle but when driving run smooth.

Rough idle is a very common problem on 4 cylinders, but I believe the 98 Regency has a 6 cylinder in it, right?

Sometimes the coil packs get iffy, and sometimes the EGR Valve gets a leak in it causing a rough idle.

When the accelerator pedal is depressed, it can change things so that the engine seems to run smoothly.

However, I would look for codes to see if anything intermittent is occurring in the engine that may need attention.

The OBD-I scanner can help to diagnose the problem, if anything is out of specifications on the engine in question.

The owner will have to find a technician that has such a scanner.

Aug 29, 2010 | 1991 Oldsmobile Ninety Eight Regency

1 Answer

How do I change my brake power booster in my 1989 Regency 88? My car does start and runs good, until you put it in gear and hit the brake. My brake petal is very hard to push. It will kill the engine when...

First inspect the vacuum check valve and the booster vacuum grommet for any leaks, even a pin hole in the check valve can also cause that to happen.

If the vacuum line to the booster is tight and has no air leaks, and no air leaks are in the vacuum check valve, then replace the booster unit.

Apr 19, 2010 | 1988 Oldsmobile Regency

1 Answer

I just tune up my car and know i am getting bad gas miles

The only way you can determine your gas mileage is by filling the tank then driving it down, filling it up again and dividing miles driven by gallons burned. You can't determine gas mileage by how fast the gage goes down. You may have made a mistake in your tune-up and got a couple of wires crossed. Someone may be staeling your gas.

Oct 06, 2009 | 1999 Oldsmobile Regency

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

87 people viewed this question

Ask a Question

Usually answered in minutes!

Top Oldsmobile Experts


Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

Are you an Oldsmobile Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides