Question about 2003 BMW Z4

1 Answer

Coolant disappears, no visual leaks, temperature seems ok.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 3,400 Answers

Have your cooling system pressure tested. You might check for coolant in your oil, possible seepage of head gaskets. You don't see steam or white smoke from exhaust do you?

Posted on Mar 28, 2011

  • dewdrop24 Sep 05, 2011

    I see white smoke after driving for a period of time. Went to have the car put on a lift. No visible leaks,nor does the car overheats. What could this be?

  • Zoowho Sep 07, 2014

    90% change water is leaking thru head gasket into cylinder area and going out exhaust pipe. A small leak is not so detectable by white smoke out the tailpipe as suggested before. Have a gas check done on the radiator for presence of Hyrocarbons. Yuo can get tool from Autozone for free and only pay for fluid needed to run test, about 20 bucks. If presence of gas in water area then a head gasket or cracked head is certain.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Temperature light that disappears after restart - golf vw


It is very possible the culprit is the radiator cap.

Jun 04, 2017 | 2002 Volkswagen Golf

2 Answers

Coolant boiling in resevoir.


It can be faulty coolant temperature sensor.Its not sensing exact coolant heat temperature so its overheating then required level.

-----------

Get the coolant pressure tested, its definitely leaking coolant. You will need to get the coolant running line.


Pressure test will help you to know from where exactly coolant/refrigerant is getting leaked.

===========

For complete step by step troubleshooting i suggest you to go through the help links mentioned below :----

Click the link below :-----


Coolant enters in transmission on Toyota Land cruiser?

http://schematicsdiagram.blogspot.com/2012/01/coolant-enters-in-transmission-on.html

--------------

1991 Toyota Camry: Order Coolant Bypass Tube?

http://whatisbyme.blogspot.in/2012/05/1991-toyota-camry-order-coolant-bypass.html

-------------

2002 Toyota Camry: Puff of Blue or White Smoke while Starting?

http://whatisbyme.blogspot.in/2012/05/2002-toyota-camry-puff-of-blue-or-white.html

----------------

1994 Toyota Camry: Coolant Leak?

http://technoanswers.blogspot.in/2012/04/1994-toyota-camry-coolant-leak.html

----------

2006 Cadillac DTS: COOLANT LEAK AT DRIVER SIDE NEAR FIREWALL?

http://schematicsdiagram.blogspot.in/2012/04/2006-cadillac-dts-coolant-leak-at.html

----------

MAF, IAT, MAP and Coolant Level Sensor problem all together on Mazda MPV?

http://schematicsdiagram.blogspot.com/2011/12/maf-iat-map-and-coolant-level-sensor.html

---------------

GMC Engine Coolant Temperature (ECT) Sensor Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-engine-coolant-temperature-ect.html

------------

Loosing Coolant?

http://whoisbyme.blogspot.in/2012/06/loosing-coolant.html

---------------

Coolant temperature sensor dies again and again?

http://schematicsdiagram.blogspot.com/2012/01/coolant-temperature-sensor-dies-again.html

------------

2000 Daewoo Lanos: Where to Add Coolant?

http://repairhelpcenter.blogspot.in/2012/06/2000-daewoo-lanos-where-to-add-coolant.html

Blue Water Warning Light on Dash?

http://whatisbyme.blogspot.in/2012/07/blue-water-warning-light-on-dash.html

---------------

Replacing Oldsmobile Engine coolant sensor?

--------------

How to test Engine coolant temperature sensor?

------------------

Replace Coolant Sensor Module on Oldsmobile?

-----------

These details will help.

Thanks.

Nov 28, 2012 | 1996 Lexus GS 300

1 Answer

Audi A6 2.4 coolant leak - not to find anywhere


You have a small leak on the rear of engine whioch is difficult to see. Run the engine to operating temperature. Put it on a ramp and examine from underneath with engine idling.

Oct 19, 2012 | 2006 Audi A6 2.4

1 Answer

I hve water leaking from the rear of my engine on my 98 expedition


Hello moltn, quite often people completely fill their coolant reservoir, ( the plastic bottle with the cap that says, " coolant " ), If you haven't already, make sure that the coolant level in the reservoir isn't over the FULL line. When it is overfilled, and the engine runs for a few minutes, the heat builds some pressure and forces the extra coolant out through an overfill hose. That overfill hose usually drains, on the ground, in the general area your leak is comming from.
If that is NOT the problem;

Next, we need to find out if it leaks all the time, or, if it only leaks under pressure, ( when the engine is running and warmed up ).

Start the vehicle just long enough to back it up 2 or 3 feet and then turn the engine back off. Raise the hood and visually inspect the area where you seem to leaking from. Allow about 10 minutes and then look to see if you have a new puddle under the vehicle.

If it's a non-pressure leak, you should be able to spot it right away, most likely a loose hose clamp, If so, first look closely at the condition of the hose, if it looks okay go ahead and tighten the clamp, ( you often only need about 1 full turn on the screw/nut that tightens the clamp.)
As rubber hoses age they lose some of their integrity, so clamp should be checked atleast every six months.

If you find nothing leaking, it is likely a pressure leak that is often the result of the engine and coolant reaching their operating temperature and as they do the heat builds perssure and will usually force coolant out of any weak links in the cooling system.

Let the engine run 6 to 8 minutes to allow the vehicle to get to its normal operating temperature.
Look at your temperature gauge, your needle should be about in the middle. Go back and look in the engine compartment again and visually inspect for signs of leaks. You should be able to locate any pressure leaks at this point. As before, if you locate the leak, and it is at a hose, do a good visual inspection of the hose, and the clamp.

Good luck my friend!

Jan 16, 2011 | 1998 Ford Expedition

2 Answers

2002 elantra p0128 code. Cleared with a scanner but keeps coming back on. Coolant level seems ok. Fans turn on/off automatically. Coolant temp gage sometimes stays below C when driving on freeway at night,...


I would start with the cheapest fix first. Change the air filter and then replace the coolant temp sensor. Then perform another ODBII scan. Let the scan be your guide to any repairs to avoid buying parts you don't need.

Jun 16, 2017 | 2002 Pontiac Montana

1 Answer

I was in a front end collision last month which led to a new waterpump and radiator. ever since then my coolant has been "disappearing" (also the temperature gauge in my car doesn't work). Initially I...


The temperature indicator doesn't work because the temperature sensor is not connected or faulty.
The only other way your coolant can dissapear is thru boiling so most likely the fan isn't working - check it if it has power, its control sensor and relay are doing their job and the fan itself is in working order.

May 23, 2010 | 1997 Toyota Corolla

2 Answers

Missing coolant


Chances are the coolant is leaking into the intake/cylinder head and being burned in your exhaust. An easy test for leaks involves a pressure test of the system via the radiator cap at your local garage with an ultra violet dye in the coolant .

Jul 27, 2009 | 1998 Honda Civic

2 Answers

I have a 2003 dodge ram 1500 with a V-8 4.7 engine and my check engine light came on with a P0456 code and I have been told that it could be the gas cap, I have checked it and it seems fine but should I...


The leak in your evap system is very small at .020. It is more than likely a small split in a hose somewhere. The cap is probably ok, we rarely find a bad one. If it is a small split in a hose it will only get larger over time. Here is the factory info on the code. We have found that alot of these leaks are from a small hose on the evap canister under the vehicle, but with out looking at your vehicle it is hard to say. If the leak goes away or is no longer large enough to be detected, your light will go out after a few days. These leaks are emmissions related and will not effect the integrity of the vehicle. I would have it checked and corrected if the light stays on at your convienience.

Symptom List:
P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED
P0456-EVAP LEAK MONITOR SMALL (.020) LEAK DETECTED
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0442-EVAP LEAK MONITOR
MEDIUM (0.040) LEAK DETECTED.
When Monitored and Set Condition:
P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: If there is a leak larger than 0.0409 and smaller than 0.0809 in the
evaporative system.
P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: There is a leak larger than 0.0809 in the evaporative system.
P0456-EVAP LEAK MONITOR SMALL (.020) LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: There is a leak larger than 0.0209 and smaller than 0.0409 in the
evaporative system.
POSSIBLE CAUSES
LEAK AT GAS CAP
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
VISUAL AND PHYSICAL INSPECTION
VERIFY EVAPORATIVE EMISSION SYSTEM LEAK
EVAP PURGE SOLENOID OPERATION
INTERMITTENT LDP MONITOR FAILURE
EVAPORATIVE EMISSION LEAK DETECTION
GAS CAP
LDP COMPONENT LEAK

Jun 12, 2009 | 2003 Dodge Ram Maxi

2 Answers

2000 Grand Prix losing coolant


This all sounds like a leaking head gasket, the fast guage swing is caused by air pockets around the temp sensor.

Oct 28, 2008 | 2000 Pontiac Grand Prix

Not finding what you are looking for?
2003 BMW Z4 Logo

Related Topics:

182 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Frankie B

Level 2 Expert

65 Answers

Fred Sops

Level 2 Expert

272 Answers

Doberman

Level 2 Expert

254 Answers

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

Answer questions

Manuals & User Guides

Loading...