Q: heating/cooling and fan

asked by on October 14, 2016

there is little heat in the car, the fan under hood is on high and the engine coolant light will go on and off. In the summer the AC won't blow cold.

My car has 100000 miles.
My car has an automatic transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Need car checked out before replacing transmission.
If the transmission is slipping you may simply have a low fluid level. I would recommend checking the fluid level as the first step. If the fluid level is low have the system topped off (https://www.yourmechanic.com/services/transmission-fluid-service) and see if anything...
Driver's side door won't open
If the driver side door will not open then most of the time this is caused by a broken door latch that should be repalaced (https://www.yourmechanic.com/services/door-latch-replacement). If neither handle works then the latch is broken inside of the door or...
The car is overheating and hissing when the AC is on
Hello, if the car is only overheating when it is not moving then it is usually caused by an air flow issue through the radiator. Most of the time, this is caused by an issue with the radiator fan not...
Timing chain replacement
This vehicle has 3 timing chains (https://www.yourmechanic.com/article/how-to-replace-a-timing-belt-by-robert-tomashek) and in order to align them up correctly you may need to purchase a repair manual or have the timing chain (https://www.yourmechanic.com/services/timing-chain-replacement) repair done by a qualified mechanic. These engines typically require special...
Misfires of several cylinders on highway drive
Hello - this is a known issue, and BMW has a technical service bulletin out to address this (#385317). A software upgrade to the engine management computer is the repair for this. You should check with your BMW dealer's service...
When I come to an abrupt stop, the engine stumbles like it wants to stall. Any thoughts?
A low transmission fluid level from a leak is more likely to cause the transmission to slip, especially on hills. If the torque converter clutch of the electronics that control it are sticking on, this situation may cause the engine...
Clunking while decelerating
This is a common sign of a failing CV joint. A CV (Constant Velocity) joint is a shaft that connects the transmission to the wheels, essentially transferring the power from the drive train directly to the wheels. The CV joint...
My 2002 vw passat is trembling while parked , trembling during acceleration and at speeds under 40 mph . can u give me some advice
An engine shake (https://www.yourmechanic.com/services/engine-is-shaking-pulsating-or-vibrating-inspection) can be caused by a number of reasons. A broken or disconnected vacuum hose can effect the air/fuel mixture enough to cause a "lean misfire" and make the engine shake. The VW / Audi 2.8ltr is...
Hello, my 2011 Chevy aveo is stalling at 60mph on the freeway and is smoking from the tail pipe. Do you have an idea of what this
Hi Nicole. Thanks for submitting your question tonight. There are a few possible issues here. First off, if the check engine light is illuminated, this means that one of the vehicle sensors has detected some sort or mechanical or electrical...

Related articles

A Buyer’s Guide to the 2012 Mercedes Benz S350 BlueTec
The The 2012 Mercedes Benz S350 BlueTec brings diesel to the S-Class line in an extravagant way. With exceptional luxury, comfort and performance, you’ll have to schedule a test drive just to experience it for yourself. Once you do, you...
Mercedes-Benz Certified Pre-Owned (CPO) Car Program
Shopping Shopping for a used Mercedes-Benz vehicle often leads many drivers to consider certified pre-owned options. Mercedes-Benz is one of many manufacturers that have a certified pre-owned (CPO) program. Each car manufacturer structures their CPO program differently; read on to...
Understanding the Mercedes-Benz Active Service System (ASSYST, ASSYST PLUS, ASSYST Fixed Intervals) Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Mercedes-Benz Active Service System indicates when and what service your car needs.