Question: I have a 2004 Lincoln Towncar and my AC went out there was a smell like burnt plastic,then a knocking noise started when i start my car.Today my steering wheel is very hard to turn and the battery light stays on the car struggles to stay on.
Answer: Most likely the serpentine belt has broken. Do not drive the car as
the water pump could be driven by that belt and overheating could occur. The belt typically runs the alternator, air conditioning compressor and power steering pump. As stated before, it could also drive the water pump, but most modern cars have the pump driven by the timing belt. Should be a $25-$45 belt and a fairly easy job to replace. Whoever does the work should check all pulleys and make sure nothing is seized. The burning rubber smell could have been from a seized idler pulley, tensioner or accessory pulley, which caused the belt to heat up and snap.
Posted: 24th July 2015 | Author: Kevin Schappell | Category: Cooling, Electrical, Engine, Heat & AC
Do the rest of the belts like the water and alternator they are still working when I crank the car…should they not be working?
or the timing belt works independent from the others?
I also check the distributor rotor and it’s not spining with the cap off…. that’s why I think it’s the tming belt…
Any help will be appreciated…
Yes, it’s the timing belt. The accessory belts are driven from the crankshaft. The timing belt is driven from the crankshaft as well and turn the camshaft/s. The distributor is also usually driven off the camshaft. So if the distributor is not turning, the camshaft is not turning, and the belt is broken. The same holds true for timing chains as well. Usually the chain will not break, but the teeth will wear off of the gears bolted to the camshaft or the crankshaft.
Posted: 29th October 2013 | Author: Kevin Schappell | Category: Engine
I have a Ford F-150 1995 model it has a 302 in it. My question is, it keeps overheating I change the water pump about 6 months ago, it has a new thermostat also, the water wasn’t circulating in the radiator so I flushed it 3 times took it out and made sure everything was washed out of it, so I put it back in and the water is moving through it just fine now, so I figured I had the problem fixed well I don’t its still running hot . Do you have any idea what else it could be that’s making it run hot? I’m baffled and out of ideas. Hope you can help thanks. – Kirk
Here are the steps I use when diagnosing an overheating issue…
1. Check the radiator cap with a tester. A bad radiator cap will keep pressure from building and can cause an engine to overheat.
2. Pressurize the cooling system and check for leaks.
3. Have the hoses been changed lately? A soft radiator hose can collapse and restrict flow of coolant to the engine.
4. If the radiator was plugged and required a flush, maybe the engine has a blockage as well. Was any radiator stop-leak product used in the past? They can cause issues with head gasket coolant passages and other tight areas.
5. I have had brand new water pumps fail shortly after install. It’s possible that at higher RPMs the impeller is spinning on the shaft, reducing coolant flow.
6. Check airflow, fan clutch or electric fan if equipped.
Overheating issues can be a real pain to diagnose. Many shops and owners just start replacing until they find the culprit.
Posted: 28th October 2013 | Author: Kevin Schappell | Category: Cooling, Engine
I have a 2003 Ford Taurus 3.0L V6 Engine, when I have my car in idle it runs rough and the RPM’s stay at 700, when I put it into drive it hesitates, if I put the a/c on the RPM’s vary between 300-700 and then stalls out. I had routine maintance done recently, (oil change, air filter replaced,and tires rotated).The backpressure sensor was replaced,less than a year ago I had a tune up done.
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Posted: 23rd August 2010 | Author: Kevin Schappell | Category: Engine
Question: I have a 2002 jaguar s type, 4.0 L with the codes 705 and 125 coming up…what does this mean?
P0125 – Insufficient Coolant Temperature for Closed Loop Fuel Control
P0705 – Transmission Range Sensor Circuit Malfunction (PRNDL Input)
These codes are generic OBDII codes from the following site…
I would guess from the first code your coolant sensor is shot, or the
wiring is bad to the sensor. Â The second one related to the
transmission shifter location, which the sensor may be in the
transmission or the console where the shifter is. Â I don’t have a
Jaguar manual handy to tell you specifics. Â Alldata repair manuals are
an excellent source for this kind of specific info.
Posted: 22nd March 2010 | Author: Kevin Schappell | Category: Drivetrain, Engine