Question about 1985 Oldsmobile Delta 88

1 Answer

85 olds delta 88 blows cold air from heater

Every thing is in proper order. that is what is making it hard.

Posted by on

  • drbussard Mar 08, 2009

    regarding 85 Olds Delta 88 which blows only cold air .. we have replaced thermostat, the heater hoses are hot, have flushed radiator & coolant is good .. air blows strong, can adjust flow (low to high) but NO HOT AIR, no matter how long we let it run .. car does not overheat .. hopes this helps clarify what I'm dealing with .. my wife wants her car to be drivable year round and not just for summer :-)

  • Roberta Smith
    Roberta Smith May 11, 2010

    feel the heater hoses.. are they both hot ?



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 201 Answers

If your coolant is full, and the car is not overheating, it's probably not your thermostat, but you might want to make sure. Look on the heater hoses running to the heater core - there should be a solenoid valve in the supply one (I think it's a vacum solenoid). That ****** is probably toast.... I believe it's meant to shut the coolant flow off when the aircon comes on. You can either whack it, replace it, or, if the aircon doesn't work anymore, remove it and put a coupling in there.... if it's not that, then your heater core is probably plugged.

Hope this helps :)

Posted on Mar 08, 2009

  • John Aman
    John Aman Mar 08, 2009

    Did you check for the valve I mentioned in the lines going to the heater core?

    The only other thing I can think of is the hot/cold temperature slider - If you don't have Automatic Temperature Control, I believe it's just connected through a cable to a door in the air supply. You should feel some resistance when you slide the control, and if you slide it from hot to cold quickly, you should be able to hear it slam the door closed (in other words, make sure the cable is operating the door)



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.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I have changed the thermostat on my 1996 Olds 88 and have checked the level of the coolant and everything there is in proper order. The blower works in both AC mode and heat mode, when I select cool the...

check the heater inside under the dash and make sure the actuator motor is opening and closing the doors fully on the heater to direct the heat and ac.

Apr 22, 2017 | 1996 Oldsmobile 88

1 Answer

Replaced heater core and thermostat but when i turn the heat on nothing no cold or hot air

is the blower fan working? does not sound like it.. I think its located under the hood on passengers side of engine compartment, either the motor is bad or the blower resister could be bad, if its not blowing any air...

Dec 08, 2011 | 1984 Oldsmobile Delta 88

2 Answers

Need the belt routining diagram for 1983 olds delta 88 royale, 5.0 liter engine

Air pump/Smog pump and Compressor go on first, on the shaft. Power steering goes on next Altenator is the last one. After market pulleys and the above mentioned parts may change this order.. 1983 olds delta 88 royale

Aug 19, 2011 | 1983 Oldsmobile Delta 88

1 Answer

85 88 royale. Last summer replaced 1 of the valve

She should still have some life left in her. The water pump isn't too hard to replace, really no special tools needed. When motors get around that mileage, they will use some oil and have some leaks. As the engine wears, blow by developes and will cause gaskets to leak. I would also check the PCV valve.

Jun 06, 2010 | 1985 Oldsmobile Delta 88

1 Answer

85 olds vacuum hose diagram

It should be right there on the hood it should be yellow or white (Vehicle emission)

Nov 27, 2009 | 1985 Oldsmobile Delta 88

1 Answer

Heater is blowing cold air 1999 dodge stratus

A heater blowing cold air can be a few things. have all of these things check for proper operation to find the source of the problem.
1. Coolant level
2. Thermostat
3. Water Pump
4. Heater control valve
5. Make sure that the heater control doors are closing when you switch from hot to cold.
6.Last but not least if the climatic controls are electric it maybe at fault.
Good Luck

Dec 09, 2008 | 1999 Dodge Stratus

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

306 people viewed this question

Ask a Question

Usually answered in minutes!

Top Oldsmobile Experts


Level 3 Expert

78238 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8836 Answers

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

Answer questions

Manuals & User Guides