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Talked several days ago about 2001 toyota sienna no spark no noid light pulse has fuel pressure no trouble codes changed crankshaft position sensor no fix 3.0l where is camshaft position sensor located please

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Front part of the engine, above the front exhaust manifold to the right. Its usually black/grey sensor with an eletrical connector running from the RH side of the engine. By the way the cam sensor controls spark, the crank sensor controls fuel pulse. hopefully this helps

Posted on May 11, 2010

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Posted on Jan 02, 2017

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1996 Toyota Corolla cranks will not start. Has spark, fuel pressure at rail, no injector pulse with noid light when cranking. MIL light very dim. Unable to retrieve fault codes


Check distributor rotation to ensure good timing belt. If good, check crank and cam position sensors. The computer fires the plugs and injectors based on many factors but most importantly the crankshaft and camshaft position.

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2001 Mitsubishi montero sport xls replaced crankshaft sensor still will not crank


Test fuel pressure at key on. Next test for spark to plugs. Use "noid" light to test for injector pulse.

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2011 nissan sentra won't start


Thank you you can start by scanning for codes, but a 02 sensor will not cause a no start condition
We will have to pinpoint what the engine is missing.

Spark

Fuel

Compression
All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the car to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should! Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition

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On a 2004 dodge durango, 4.7l turns over but won't start. It did it 2weeks ago was told electrical problem n fixed. Did it again 3 days ago and it started without anyone doing anything to it the following...


Durangos are known for crank sensors to go bad. Make sure that your battery is fully charged so you know that isn't an issue. If you don't have the proper equipment, try this.. Your going to need someone else's help for this. Pull one of the spark plug wires, using a screwdriver, put the tip of the screwdriver into the wire and hold the shaft of the screwdriver about a quarter inch away from a good ground source. Have your assistant turn the key and crank the engine while you check to see if you have spark. If you can, visit your local parts store and ask for a noid light that will fit your vehicle. It's usually about $10-$12. The purpose of the noid light is to check for injector pulse. Disconnect the plug for the injector and connect the noid light in it's place. Once again, crank the engine and check to see if the noid light lights up and pulses. If the crank sensor is bad, you should have no spark and no injector pulse. Replace crank sensor if so. If you have spark, check for fuel and or fuel pressure. Listen for the fuel pump to energize when the key is turned. Also try spraying starting fluid into the throttle body. If it starts, your having fuel issues. I hope these tips help. Good luck.

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2 Answers

1991 bonneville 3800 starts and runs welll for 5 min or so then dies. !


Check that fuel pressure after warmed up & check injectors with noid lights to see if they're firing warm

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The starter cranks normally but the engine won't start


Hi there:
You will have to pinpoint what the engine is missing...
- Spark
- Fuel
- Compression

All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the engine to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should.

Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition. Be extremely careful when doing these tests.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Aug 03, 2012 | 2001 Suzuki Grand Vitara

1 Answer

Tiberon will not start. Quit while running and restarted but quit again when I got home and will not refire.


Hi there:
You will have to pinpoint what the engine is missing... spark / fuel / compression

All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the engine to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should.

Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition. Be extremely careful when doing these tests.

Other choice coul be a problem with the CKP (Crankshaft Position( sensor, if this is the case, will need replace it.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

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1 Answer

Engine cranks but wont start


Usually if no rpm signal, the vehicle won't start. Engine cranking, did you check for spark at the spark plugs? The fuel pressure you listed may have been the initial prime. It sounds like no injector pulse. The rpm signal comes from crank sensor. If your missing rpm signal, may thought is the crank sensor.
Were there any applicable trouble codes?

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2001 Sienna VSC/Trac/Engine Light


Toyota Specific Trouble Codes
P1135 Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1)
If you have changed the proper sensor then you may need to have the cam shaft looked at.

Dec 16, 2008 | 2001 Toyota Sienna

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