Question about 1988 Plymouth Sundance

1 Answer

Overflow always fills,,,,radiator 1/2 full,,,when driven,,,gauge

Guage goes tohot then acts normally,,,,possible head/or head gasket,,,,i know,,,but,,,could there be something we're missing??water pump not leaking,,externally90,000mi.,,,no apparent leaks from the head,,,,im not a mechanic,,,one previous head gasket replaced,,,,

Posted by on

  • Mike Butler
    Mike Butler May 11, 2010

    Have you bled the system properly? As in let it run from cool with Rad cap off & heater (not defrost) on, and keep level in rad topped up 1"or 2" from top of rad, while you let it run & allow rad fan to come on 3 or 4 times, before you put cap back on?



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has written 2 tips or uploaded 1 video tip.

  • Expert
  • 81 Answers

My girlfriend has a 91 sundance. I solved that prob by doing a coolant flush and replacing the radiator cap. The gasket was torn to shreds on the cap

Posted on Aug 24, 2009


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 Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only 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

Can a weak radiator cap cause bubbles on overflow

Yes it can be the cause, but a leaking head gasket or system overheat can also cause the bubbles.

Jan 11, 2017 | Cars & Trucks

2 Answers

Losing coolant

Wait for the cooling system to cool down. Remove the radiator cap, start engine and watch for bubbles in the tank. If you have bubbles the possibilities of a bad head gasket is suspected. To verify a suspected head gasket, leave the radiator cap on and tighten. Start the engine, using a heavy towel or rag loosen the radiator cap SLOWLY. If pressure is evident only after a minute of running.....=Blown head gasket!

Jan 22, 2014 | Chevrolet Malibu Cars & Trucks

1 Answer

Ford Fiesta Zetec engine, year 2000. overheats after getting up to temperature, stays on normal for 1-2 kilometers, then gauge shoots over to the red. I stop, can hear water bubbling, wait till it cools...

1. Check the radiator cap.
2. Check the reserve tank, whether water level is maintained or getting filled. If it's getting filled, there should be a leak in the radiator or gasket

Jun 13, 2017 | Ford Focus Cars & Trucks

1 Answer

I have a 1986 Merc Sable LS, 3.0 motor,with A/C. a little over 87,000 original miles. I have a couple of questions. My temperature guage does not work right.When I turn the key on,the guage goes all the...

Sounds to me like it might be more of a leak than repair/sealer can handle. It never hurts to try though. But if it doesn't work, you might have a little more cleanup to do when you pull the head. It may also be a cracked head as opposed to just a head gasket as well. keep thet in mind. A bad head gasket will cause an overtemp, not the other way around. As for the temp gauge, someone may have worked on it before. sounds like it's hooked up backwards. check it out. if the gauge is bad, it's probably cheaper and easier to get an aftermaket one.

Dec 22, 2010 | Mercury Sable Cars & Trucks

1 Answer

Hey guys, i am no mechanic not even close, but my pontiac grand prix se 4-dr automatic with 6cyl, has been acting strange when i first start it and drive it maybe 30 min the low coolent light comes on and...

The first things to do are: 1. Make sure the radiator is full when the engine is cool (check the fluid in the radiator as well as the overflow tank). 2. Make sure the thermostat is working. 3. Have the lower intake manifold gasket checked. The Grand Prix SE came with a 3.1L engine (standard) and these engines are famous for lower intake manifold gasket problems.

Nov 18, 2010 | 1999 Pontiac Grand Prix

1 Answer

Temperature gauge shows hot

head gasket does the overflow bootle have bubbles in it when idleing warm if does most likey rear head gasket.

Jan 04, 2009 | 1999 Pontiac Montana

2 Answers

Leaking Coolant, but not from radiator???

is it possible it is your overflow bottle leaking or too full? If not These cars are bad about headgaskets. Start your car remove radiator cap and let it idle till it is up to temp and top radiator. If you have a leaking gasket or cracked head you would most probably see bubles and the water will try and come out of the radiator fill. What hapens on many is while your driving, combustion gases force the antifreez out into the overflow and it fills up and spills over.

Dec 26, 2008 | 2002 Ford Taurus

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

Related Topics:

121 people viewed this question

Ask a Question

Usually answered in minutes!

Top Plymouth Experts


Level 3 Expert

77514 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8826 Answers

Are you a Plymouth Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides