Question about 2004 Ford Focus

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Check engine light came on - had a diagnostic test done which specified a hose - had hose replaced and have driven car 160 miles and check engine light still hasn't gone off???

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Have you or the mechanic reset the computer. If not disconnect the positive cable from the battery, wait 5 mins and then reconnect. Light will be out.

Posted on Sep 16, 2010

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The check engine flag has to be cleared. The place that replaced the hose should have done that. Call them up and ask them to do it. They ought to do it for free.

Posted on Sep 16, 2010


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How many miles do I have to drive a PT cruiser to reset the check engine light

Thermostat Stuck Open--you put it in a pot on the stove to
confirm that?

You replaced it & did not do the testing & look at data, to confirm
that was the problem & is it heating up now to 205 to 213 hot?

No driven miles at all
No problems --you won't have the check engine (MIL Lamp)
on--- when ALL Monitors run

YOU NEVER go to inspection--- until you drive with a professional
scan tool--- on the vehicle, to make sure all 8 Emission Monitors
have run -------OR YOU WILL FAIL-------

The vehicle needs some diagnostic work,checking, road testing,
component testing, whatever is needed

There obviously are problems, yet to be found & corrected

BEFORE you should even be using it

Aug 12, 2014 | 2003 Chrysler PT Cruiser

1 Answer

We just purchased a 2003 Impala and have only driven approimately 400 miles. It had 91890 miles at purchase. We now have 92200 miles and the check engine light came on. We checked the coolant and level...

Did you smell the oil? Make sure it does not smell like anti freeze. Also check under the car for leaks. Check floor mat could be heater core. Also check the hose that goes from the resivoir to the radiator. Have the code read at an autoparts store it is probably emission related

Jun 06, 2012 | 2003 Chevrolet Impala

1 Answer

P0506, P0411, P0171

For OBD code problems check the list of help links below. Click the link below to go through its procedure.

Diagnostic Code P2195?

Diagnostic code P1330?

Diagnostic code P0700, P1330, P1121?

shows error code P1330?

OBD code P1330?

OBD code P01300?

OBD code P0768?

Evaporative Emissions System codes details? --------------- Engine Misfire codes?


Misfire on cylinder 4?

ABS trouble codes for all models?

Diagnostic code P0010?

Diagnostic Code P1396?

Code P0452?


OBD code P0172 on Buick?

DTC Code P0321?


Error Code P0471?

P0304 Error code?


OBDII scan is receiving NO BUS CODE?

How to Clear OBD error Codes?

Diagnosis and Testing Car Components?

Diagnostic Trouble Codes list?

Part 1.

Diagnostic Trouble Codes list?

Part 2.------

OBD Code is cleared but check engine light will not RESET?

Diagnostic Code 43 and 71?

Code P0132?

P0031 code?

How to get diagnostic Code without OBD Scanner on Pre 1995 cars?

OBD-II Trouble Code P0300?

Getting diagnostic code P0016?

How to Read Codes from Check Engine Light?

Diagnostic Code P0540 continues to return and the MIL light is on?

DTC Trouble Code P0401?

Car misfires and error code P0306 and P0303 is shown?

Diagnostic code P0463?

Check engine light with codes P2195 and P2197?

Diagnostic error code P0121,P0505,P1000,P2101,P2104, P2110,P2135,P2106?

P0174, P0037 and P2197?

P0352 Obd code?

Error code p0402?

Obd Code P0763?

OBD code P0301, P0430 and P0174?

OBD code P0500?


This will help.



Feb 29, 2012 | 2007 Chevrolet Trailblazer 4.2

1 Answer

Have bmw 320i 2001 only 55570 miles. even driving after 10 miles engine get hot. no problems with driving , no warning light but it stays hot even after2 hours. please need advice. car was checked

This bmw is overheating , even after 2hrs, the engine will still be hot after it verheats. the basic thing to do first is to allow the engine to cool down 5-6 hours or even overnight.then check to see if the cooling system is full of coolant. this problem may be caused if lets say the coolant level is low, this can happen if theres a leak in the system. if low fill system and then have it checked for leaks.another problem if the system is not low then you may have a bad thermostat, a bad thermostat will not allow the coolant to flow inturn making engine overheat, the the last common problem could be a bad fan, start in the order i listed as far as the thermostat watch the gauge and feel the lower hose, if the gauge goes to hot and the lowe hose is luke warm or cold and the top radiator hose is hot then the thermostat is bad. the last test is for the fan, if the top hose and the lower hoses are hot and the car is starting to overheat then it may be the fan, see if the fan is spinning, this car may have an electric fan or belt driven fan, if its electric then see if its running, if the fan is not running then testing need to be done to see why, the fuse and the relay will need to be tested and then the fan itself. if the fan is belt driven then you will see if the belt is on the fan pulley and then check the fan clutch, the way the fan clutch works is the fan will run at a slowwer speed than the engine and then when the heat from the radiator gets hot and blows on the front of the clutch this causes the fan clutch to lock up and makes the fan spin faster. check to see if this is happening but if this were to be the problem or if the fan was aproblem the car would not overheat as you are driving rather it would overheat at a stop or in slow traffic because the air flow from the driving would act like a fan as the air flows through the radiator from driving this would cool the engine if it was the fan, but if the car overheats even while moving then it would not be a fan problem but rather the thermostat or low coolant. there is another problem but i would start with these. hope this is helpful.

Oct 02, 2011 | BMW Cars & Trucks

1 Answer

We just bought a 2006 Highlander with 60,000 miles +/- Need to know what should have been done as far as reg. maintanace, nothing seems to be wrong in fact we have no inmidiate concerns, but would like to...

There is not a lot due at 60,000 miles as far as regular maintenance. Depending on which engine you have, a timing belt replacement is due at 90,000 miles. (The 2.4L engine is chain-driven) Spark plug replacements are not due until 80,000 miles.

In the meantime, I would have the condition of the engine coolant checked. It should be checked for the freeze protection level as well as the acidity level. Chemical test strips are available at your local parts store for this purpose.

All fluids should be checked for proper levels inlcluding differentials and transfer cases if it is a 4X4. Check and fix any fluid leaks right away. Fluid leaks can lead to rapid deterioration of rubber mounts and hoses as well as damage wiring harnesses and computer sensors.

If the battery is original it should probably be replaced due to the age of the vehicle. If it is not original I would have it tested. Remember NOTHING works on your vehicle without the battery.

Dec 18, 2010 | 2006 Toyota Highlander

1 Answer

Red light on, car has 164000 miles what maintenance is required

Not knowing what you have done and when below are the normal intervals for Checks and Replacements:
If you have not done something in a while, or can't remember when it was done: go ahead and do it now to keep your vehicle on schedule.

Every 250 miles: (Every Week)
Check Automatic Transmission Fluid Level.
Check Battery Electrolyte Level, Post and Cable Connections
Check Brake Fluid Level.
Check Engine Oil Level.
Check Engine Coolant Level + Reservoir
Check Horn Function.
Check Operation(s) of ALL Lights.
Check Power Steering Fluid Level
Check Tires and Air Pressure Levels (Don't Forget the Spare)
Check Windshied Fluid Level
Every 3,000 miles: (Every 3 to 4 Months)
Change Oil and Filter.
Every 7,500 miles: (Every 6-months)
Rotate the Tires.
Check and Clean Battery
Check Cooling Hoses & Connections for Leaks & Damage,
Check the Exhaust System.
Check the Condition of All Vacuum Hoses & Connections.
Check Wiper Blades. Replace if needed.
Check for "play" in Steering Linkages and Balljoints.
Every 9,000 miles: (Every 9-months)
Check the Brakes: Pads, Rotors, Calipers and Hoses.
Lubricate the Tie Rod Ends and Ball Joints.
Check the Drive Axles, CV Joint Boots: Inner and Outer.
Check Suspension: Coils, Struts and Shocks.
Every 15,000 miles: (Every Year)
Replace Air Filter
Change Automatic Fluid and Filter.
Check Fuel System Hoses & Lines and Connections.
Check Drivebelts/Surpentine Belts.
Every 30,000 miles: (Every 2-Years)
Drain and Replace the Engine Coolant Fluid
Flush Coolant System.
Check and Replace PVC Valve.
Replace Spark Plugs.
Replace Ignition Wires.
Check Distributor/Electronic Ignition Coil.
Check Operation of ALL Seatbelts.
Check EVAP Emission System Hoses and Connections
Every 60,000 miles:
Replace Fuel Filter.

Let me know if this helped, or if you have any additional information or questions. Contact me at!

Feb 15, 2010 | 1995 Honda Accord

1 Answer

Check engine light on and will not go off went

if its code p0442 the most common problem is gas cap unless they reset the code for u the vehicle has to cycle- start up a few times or reset after certain amount of miles are driven--but-- this code also can b a cracked, broken,or disconnected vent line,go back to auto zone have them rescan and check for code and have them reset the trouble code if it comes back on than a problem still is present

Oct 26, 2009 | 2004 Chevrolet Corvette

1 Answer

Failed TN emissions testing. 1996 Mazda

the computer needs to be reset by performing a code erase then drive 500 miles

Sep 23, 2009 | 1996 Mazda Protege

1 Answer

Engine light comes on 2003 Jeep grand cherokee laredo

Check the Fuel Pump Relay, it may be malfunctioning and need replaced. Also, in some vechicles, if the batter is disconnected and reconnected, the service engine light will come on from time to time, going off and on simultaneously. Have a diagnostics done to see if any codes show up. If no codes appear, then have them all cleared and drive for another 200 miles. Sometimes the computer will need to be cleared a couple times before the light will stay off. Make sure that all fuses and relays are good, and securey in place. Check all factory installed lights to make sure they are good, and securly in place as well.

Mar 31, 2009 | 2003 Jeep Grand Cherokee

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