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L4-2.2L

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MAP sensor or something else?
I would recommend using a service such as All data, Mitchell ProDemand, or a Chilton book. The sources may give you the correct testing procedure for the map sensor. By using these test procedures you can be certain that the...
Question
Engine idle problem but doesnt match the code on the check engine
The engine idle fluctuation may be caused by a number of things, bit is most commonly associated with the idle air control valve either being dirty or damaged, which may also cause the other code (P0420) to be triggered. The...
Question
Fuel regulator replaced now showing p0172 and p0170 codes to replace fuel regulator
The codes P0171 and Po172 can be caused by other sensors like the MAP sensor, BARO sensor or ECT ACT sensors and each sensor will need to be checked to see if one is out of specifications.
Question
Car was low on oil and has knocking sound what could it be?
The origin of the noise can be pinpointed if you request an engine noise diagnostic. The mechanic will consider the knock intensity which will vary depending on source or type. Light knocking or tapping noise is caused by the valve...
Question
Car making a thumping sound/vibration as I'm driving
There are a number of things that may cause this kind of thumping sound that may be consistent with speeding up and slowing down, but it sounds like you may have a wheel bearing that might be failing. A wheel...
Question
oil leak thru transmission breather vent
There is no thermostat. To diagnose this, you should install a temperature gauge to determine what the operating temperature is. The A140E tends to run hot already and if the transmission is failing, heat generation could increase due to slipping...
Question
My car has some trouble codes and has a rough idle in reverse and drive but is fine in neutral and park.
You may be correct in the first three codes may also cause the last one (P0505) to be triggered, which points to the IAC valve. You can test the functionality of the valve by checking its electrical resistance if you...
Question
Car shuts off still like battery is dead, new alternator and battery
The output of the charging system should be verified as well as the charge status of the "new" battery. Batteries purchased at retail are not necessarily fully charged so the battery really can't be ruled out until everything is tested....
Question
is it the waterpump going out or gone out
Hi Linda. Thanks for contacting us tonight. Typically, water leaking from the water pump location is an indication of damaged inner seals, which means the pump is damaged. It's recommended to replace the water pump when this happens.
Question
I replaced my starter and my car won't start. I think I did everything correctly, because it did start once.
Hi Philippe. Thanks for the question today and writing back. If you'd like to request an estimate to have one of our mobile mechanics come to your location and diagnose the root source of this hard starting issue, click this...
Question
I have a 2002 chevy s10 pickup and while im driving 60mph my rpm will go up to 3000 and the engine will tev but the mph stays the
Hi Mari. Thanks for sending your question to us today. In most cases, a lack of acceleration like you're describing is due to the transmission slipping. Sometimes this is due to dirty transmission fluid while in other cases, it's a...
Question
Wobble in front left tire
Hi Andy. Thanks for contacting us today. Typically a wobble that occurs from 40 to 60 mph is going to be caused by tire balance issues, wheel bearing failure, or a loose tie rod, or CV joint. You might want...
Question
The car won't start, it shutters I'm not sure if it's an oil problem or spark plug problem
Hi Galen. Thanks for contacting us today. The first thing I would do is check the oil level to ensure this is not the problem. If your oil level is good, and the oil is clean (meaning it does not...
Question
Replaced upper radiator hose and now check engine light is on
The illumination of the check engine light could just be a coincidence, in terms of it happening right after the repair. Once the trouble codes are read and the problem identified, you will know for sure if it is a...
Question
I own a 2002 Pontiac Grand Am. My alternator went out, had it replaced. Now my car has a hard shift and the trac off light is on??
You will need to have the computer scanned for additional stored codes for the traction control and may need to have the throttle control relearned to have the vehicle shift correct.
Question
PO420 Efficiency below threshold bank 1. Catalytic converter or O2 Sensor?
Hi Justin. Thanks for contacting us today. At first glance, the numbers you listed indicate that the catalytic converter is likely clogged. You might want to read this article about the OBD-II trouble code you've listed, as it will give...
Question
Car won't start
It is possible that the ignition switch could be the cause of this issue. I would recommend having the ignition switch in your vehicle tested by a qualified professional in your area to determine if it is functioning properly.
Question
MAP sensor reading a higher voltage than it should.
The diagram in the Service Manual depicts the relationship between the voltage output of the sensor and absolute pressure, not gauge pressure as measured with a vacuum pump. To obtain the value of absolute pressure to use in that diagram...
Question
I recenlty changed the window regulator on my 2009 pontiac g5. After that, the car started to experience reduced engine power. Che
You cannot have a used ECM installed since it was programmed to old car. You will need to have a new or remanufactured one and have it programmed to work for your car and theft system. If the battery got...
Question
Crank, no start
Hi Chris. Thanks for contacting us today. The crankshaft position sensor is located near the front of your Saturn's motor, near the front crankshaft pulley. It is possible that this is the source of your hard to start issue, however,...

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