No , clogged fuel filter would cause problems at higher speed , lack of power . What engine does it have ? 2.4 or 3.4 You have a sensor problem , maybe . If your vehicle has the 3.4 L V-6 it has two crankshaft position sensors A & B One is for low speed operation & one for higher speeds . I would think the 7X is bad .
The 7X CKP sensor is bolted into the center of the engine block and protrudes into the crankcase. The 7X CKP sensor reluctor wheel is cast into the crankshaft.
The 7X CKP sensor is a variable reluctance sensor. The magnetic field of the sensor is altered by a reluctor wheel that has seven machined slots, six of which are equally spaced 60 degrees apart. The seventh slot is spaced 10 degrees from one of the other slots. The 7X CKP sensor produces six pulses and one sync pulse for each revolution of the crankshaft. This signal must be present for the IC module to send a 3X reference signal to the PCM. The 3X reference is known as the low resolution engine speed signal.
This sensor is located in the side of the block .
The 24X crankshaft position (CKP) sensor (1), secured in a mounting bracket (3) and bolted to the front side of the engine timing chain cover (2), is partially behind the crankshaft balancer. The crankshaft balancer contains the 24X CKP sensor interrupter ring.
The 24X CKP sensor contains a hall-effect switch. A hall-effect switch is a solid state switching device, which produces an OFF-ON pulse when a rotating element passes between the sensor tip and a magnet. This rotating element is called an interrupter ring. In this case the interrupter ring has 24 evenly spaced blades and windows. This sensor produces 24 ON-OFF signal pulses per crankshaft revolution. The 24X signal is used for enhanced smoothness and idle stability at a lower calibrated RPM. The 24X signal is known as the medium resolution engine speed signal.
It's a 2.4 l 4 cylinder
Check engine light on ?
I wouldn't go to auto zone ,all they want do is sell you parts .You need a guy like in the video https://www.youtube.com/watch?v=hElvhCyZ...
Map or mass air flow sensor . Low fuel pressure do to a bad fuel pump or fuel filter would not let the vehicle run at higher speeds , would run good at lower speeds an lack power at hiway speed .
Auto zone can not check sensor data , O2 sensor switching , fuel trims - short & long term trims .https://www.youtube.com/watch?v=I_0dS5qE...
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Fuel pressure regulator diaphragm may be ruptured causing your issues as it would cause idle and low to mid range rpm issues . Higher speeds can handle the extra fuel .
SOURCE: 1999 oldsmobile alero
check the fuel pump fuse, and if ok look foe fuel pump relay and replace it
SOURCE: sputtering during idle blue smoke
You are burning oil, causing the blue smoke. It is mainly cause by worn piston rings. Also will coat your spark plugs with oily residue. Try an oil additive such as "stop smoke" or another such brand to reduce burning your oil and it may recondition your seal sand stop it all together.
SOURCE: 2001 hyundai sonata 2.4 dohc, cylinder 3 misfire code
tried testing the igniter also i would look into the injector, that will cause a single cylinder misfire and probably is your problem?misfires are not noticeable at higher speeds, which im sure you know but i would go that route, could have a pinched injector or a stuck one. one easy way to test is swap 3rd injector with another and see if that one starts misfiring instead, another rought is to get a cheap auto stethoscope and put it to each injector to hear if its opening and closing, compare with others. good luck.
SOURCE: wont keep idle, car stalls out
I had this same problem on my 2005 monte carlo, took mechanic a while to figure out it was the idle air control valve. They also replace the idle air control motor.
SOURCE: 2000 oldsmobile alero fast idle
Just fixed mine today, check the vaccum tee off the manifold to the check valve, mine was cracked, repaird with electrical tape for now.
Hello.
The
following are the general instructions on the start of diagnosing any
electronically controlled engine or transmission problem.
The
engine and the automatic transmission (transmission control is only
for automatics, engine is still computer controlled no matter the
transmission type) in this vehicle are computer controlled and in
most cases when a fault occurs a fault code is stored in the memory
of the computer control module. There are exception to this, such as
the Mass Airflow Meter and fuel pressure problems. What must be done
is to have all the basic testing done such as a scan of the system
for fault codes as well as a check with a live data scanner tool for
engine functions that are not within range of normal, a trained
technician is required to know what is correct and what isn't, then
based on careful diagnostics done from a factory repair manual the
correct part is replaced or the wiring repaired or the computer
replaced (known as the PCM), which is very rarely the problem. Other
basic checks must be done as well such as mechanical problems with
the engine as well as engine state of tune and mileage on the engine.
The transmission can have mechanical issues as well such as no gear
engagement at all or a failed pump or other pressure related
problems. Also engine mechanical problems ca cause many
drive-ability related problem such as rough idle and other symptoms
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