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Re: Engine running badly
Yes water in tank can cause disturbance on the engine even costly damage to the engine! but dont have any effect on the brain(computer) or electric coponents ,if there is water in the fuel then have the tank cleaned ,the hoses blowed trhu,the fuel filter cleaner replace ,if possible the s park plugs replaced ....if the probleme persiste then , is surrely some thing else .it wil be wise to take your vehicle to a repair shop and have it scaned with the bmw apropriete tool and equipement nte that the 2001 bmw is 80% electronic so dnt try to fix it on your own more damage wil occure ......nicolas
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Bad throttle position sensor (especially if the "Check Engine" light is on or flashing)
Bad oxygen sensor (especially if the "Check Engine" light is on)
Water in fuel or bad fuel
What to do:
Start by removing the air filter to see if the problem persists. If the air filter is dirty, replace it.
Next, verify that the Check Engine light is operating by turning the key ON but not starting the vehicle. The Check Engine light should be illuminated. If not, replace the Check Engine light bulb.
If the Check Engine light is ON when you start the car, try feathering the accelerator pedal to see if the base idle stabilizes or changes. If it does, replace the TPS (Throttle Position Sensor). This is a fairly inexpensive part.
If the Check Engine light is FLASHING, or ON, next you will need to have a local mechanic or your local auto parts store attach an ODB scanner to determine what error codes are present. This will help you pinpoint the issue.
Once you have pinpointed and corrected any issues present using the ODB codes, you will need to attach a FUEL PRESSURE GAUGE to the fuel rail test point to determine if the fuel pressure is correct. If it is too high, the FUEL PRESSURE REGULATOR has failed. Again, this is an inexpensive part but the fuel system pressure must be released before servicing this part. Best done by a qualified mechanic.
HAS THE CAR SAT UNUSED FOR A PROTRACTED AMOUNT OF TIME WITHOUT FUEL BEING REMOVED OR ADDED? If so, the condition you are describing may be a result of bad fuel. Modern fuels contain ethanol, which causes moisture to condense in the tank when it is not agitated. This can cause water to build up in the fuel, and causes the fuel system to rust as well as an idle issue that resembles what you are describing. Try adding new fuel, and add a full bottle of FUEL SYSTEM WATER REMOVER. Remember: IF FUEL IS ALLOWED TO SIT IN YOUR VEHICLE'S TANK (without new fuel being added) FOR MORE THAN SIX MONTHS, IT WILL GO BAD.
Wow, sounds like its time to go to a new shop.
I understand their statement of not knowing where to start looking. When a mechanic can not duplicate the problem in the shop, and there are no trouble codes in the computer, it really is a guessing game for them/us. But what they have come with so far is bogus.
The steering wheel locking up is probably from a lack of power steering assist when the engine stops. Same thing with the warning lights being on.
A faulty catalytic converter will cause the check engine light to come on and either cause a bad exhaust smell or cause the car to lag in speed. Not stop running.
The sputtering and stopping could be electrical or fuel related. And there really are a dozen or more possible causes. So until the problem can be duplicated on demand there's not much you or the shop can do. You are not going to want to spend repair money if they can't promise the expense will fix the problem, and they aren't going to want to warranty the job if they can't be sure its fixed.
One thing you could do to narrow down the causes is to put the car in neutral the next time it feels like it is going to die. And note if the engine is warmed up or still cold when it happens. The more info you can get the better.
One possible cause is a dirty throttle body or idle air control valve.
Bad gas would cause engine to misfire run rough or not run at all. It would not cause the engine not to warm up, keep checking your anti freeze to make sure its staying full, if its staying full sounds like the the thermostat is sticking open and not letting your engine warm up properly
If the fuel pump go bad, the car will stall while you are driving, as no fuel is getting pumped up to the engine. If the plug wires, plugs or coils in ignition system are bad and are causing the engine to misfire, the engine will run rough. This may also cause the car to stall when driving. There are other problems that can make a car stall in the ignition system, the fuel system or in the drivetrain. If the timing belt breaks, the car will stall. If the computer itself stops working, the car will stall. If you do need to replace any of parts for your Ford this site looks like it has cheap prices, free shipping and great reviews http://www.buyautoparts.com/
There is a fuel pump prime cycle (2 or 3 seconds)when you turn the key to on and once you start the engine the fuel pump power comes though the oil pressure switch.No oil pressure,no power to the pump.maybe your oil pressure switch has become weak?I would use a scan tool and command the fuel pump on when it does shut off,just to make sure the pump can run,as it could be a bad pump too.Also when it does quit,if you turn the key off for 10 seconds, you should get a prime cycle by turning the key to on.Have someone listen at the gas tank for a fuel pump noise,which will be only 2 or 3 seconds,but will do as a pump running check.Next would be to check for power at the back at or near the fuel pump,power and no pump.replace pump.No power to pump,follow power back to the front through oil pressure switch and fuel pump relay etc.You can always add your own power to the pump from a power source the switches off with the key if needed bypassing the existing wiring and oil pressure switch.
Fuel pump may not supply enough pressure to run engine, but it could be a pluged fuel filter as well. you should get the code pulled out of the computer this will tell you exactly what is wrong or at least narrow down what is causing the problem. It could also be either bad gas with water in it or bad timing or wrong firing order.
I don't have enough info to give you a specific answer so I've listed a bunch of possible problem that could cause your engine to roll over but not start.
Check the battery and connections, a weak battery or bad connections can cause a weak spark and stop the engine from firing.
Fuel pump or fuel filter, low gas pressure can cause to lean of a air/fuel mixture for the engine to start.
Bad gas, old gas or water in the gas can stop the engine from firing.
Bad or fouled spark plugs, could be caused by bad gas.
Ignition wiring problems, can cause weak or unreliable spark.
Bad, poorly connected or misconnected spark plug wires. Even 2 wire out of order can stop the engine from firing.
Oily spark plug wires, can cause the spark to fire at the wrong cylinder or misfire.
Worn, damaged or wet ignition components.
1. There is NO SCREEN.
2. Did the 'Check Engine' Light come ON? Whenever the 'CHECK ENGINE' light comes on, the ECU (Engine Control Unit) sets a Diagnostic Trouble Code (DTC). These codes identify the particular engine management system which caused the light to come on.
You'll need to use/find an OBDII (On-Board Diagnostic) Scanner to retrieve any code which have been stored in the ECU computer. Afterward, we might be able to help you DIAGNOSE the problem and perhaps eventually fix the problem.
this indiacates a serious engine problem that is causing possible damamge, check codes immediately, common problem with that year blazer is bad injector and sometime fuel spider. causes fuel not to work properly in some cylinders and causes lean conditions over compensation by computer and some run rich and cat gets runned, also over drive lockup will not work