Question about Cars & Trucks
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Posted on Jan 02, 2017
Locate you computer (right front kick panel) and tap on it with a pen while the car idles... Also flex it back and forth with your hands to see if the car runs rough or quits... You may need a new one.
Posted on May 15, 2008
SOURCE: Emission light
map sensor. check your spark plugs, wires, etc. maybe a loose wire plug. did u mention check engine light, i wonder can you tell me what diagnostic code came up. go to ur nearest auto parts if u dont have a scanner. and pull them codes out.
Posted on Feb 25, 2009
Generally the computer is reading a problem with the fuel pressure being to high or to low. The ICP is one problem it could be and you changed it. The other could be Fuel pressure regulator control solenoid or problems with the injector (s).
Posted on Nov 25, 2009
Testimonial: "thanks alot, this pretty much confirmed what i thought. someone befor me put an elec. fuel pump and straight wired it to the ign. thanks."
The first thing i would check is the Glow Plug Relay. Depending on your engine there should be (2 solenoids, or just one) sitting on the top front a little to the right of center. (right bank of engine that is) If you have 2 of them one should be smaller and it is the one furthest to the rear of the engine. It controls power to your glow plugs for cold start up. When you turn the key to the on position the 2 larger wires should both have power. When the ignition is off only one wire should have power. Check this if you do both these tests and only one wire has power with key on or off then you need to make sure that the key switch is sending power to the solenoid. Do this by checking the smaller wire with key off. It should not have power and then with key on it should have power. If this is good and test one is bad then the relay is bad. Note This is not true for the larger realy that sits furthest foward on the engine. The bigger one. This test will not work for it but it controls your intake heater. On another note: This is a timed circut and will "kick out" after about 1-2 minutes. In otherwords it does not stay on all the time that key switch is on it will for for about 1-2 minutes then shut off! Next would be your injectors are getting weak or bad and even your HPOP could be getting weak. or glow plugs in engine are out, In otherwords there are alot of possibilities causing your problems If you are getting a misfire code for your injectors then you may have some weak or inop injectors. Any way this will give you a pretty easy test for the most common failure which is the Glow plug relay. About 35-40 bucks at your local auto parts house.
Posted on Feb 03, 2010
Check your TPS Throttle positioning sensor. Sounds like it has a dead spot in it or it is failing. May also be a wiring harness issue or loose connection at TPS too! If its intermittent then it will soon go out completely. It should be located on your fuel pedal. Remove it and check it with an ohm meter. Check resistance all the way thru from 0-100 percent. When it is not working it should do nothing and show no resistance. When it is working the resistance value will increase and or decrease as you turn the sensor.
Posted on Feb 22, 2010
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