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I have a 92 sentra lights come on but when i turn key nothing happens. Starter good ,relay good, head lights don't dim when you turn key . Car won't turn over at all

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  • Contributor
  • 34 Answers

Had this happen to me and the problem was the inhibitor relay. I checked the connections for 7 and 6 and could bypass the relay with a wire (relay out) and turn the starter with the key.

Inhibitor Relay

Posted on Dec 28, 2014

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  • Cars & Trucks Master
  • 5,252 Answers

If by lights, you mean the dash lights come on, then ignition switch must be getting power. If dash is not working with key on, check the 30 amp fuse link which powers the ignition switch.
If switch is good and starter is good, the start wire from switch goes to, if automatic, to inhibitor relay (the park/neutral function) and then to starter. There is also an inhibitor switch on the shifter or on the transaxle that turns on the inhibitor relay when key is on and shifter in park or neutral. The inhibitor switch is powered by a 10 amp fuse D.
If you have a manual transmission, the start wire from ignition switch goes to the clutch interlock relay and then to the starter. This relay is turned on by the clutch interlock switch on the clutch pedal.
You can check for power on either relay, the inhibitor relay or the clutch interlock relay, with a test light. Pull the relay out, have the key held in start position. Now both relays would have power showing on two terminals where the relay plugs in. If inhibitor relay only has power on one terminal or no power at all, either ignition switch is not sending power or fuse D is out or the inhibitor switch is not working right. If clutch interlock switch does not have power on two terminals either the ignition switch is not sending power or the clutch interlock switch is bad.
If the relay checks are good, check for power on the small wire to starter with key held in start. If you have power there, the starter solenoid must be out.

Posted on May 08, 2013

  • montehammons May 08, 2013

    When checking for power on cluitch interlock relay, key is held in start and clutch pedal depressed. Now relay should have two hot terminals.

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: OCCASIONALLY WHEN YOU TURN IGNITION KEY NOTHING HAPPENS

Had the same problem. There was something loose under the fuse box on the drivers side under the hood, If I moved it, the lights on the i/p and drl lights came on and it would start

Posted on May 18, 2009

  • 439 Answers

SOURCE: starter relay clicks when you turn ignition key on

I would think bad starter. Remove it and have it tested to find out. It could also be the starter solenoid gone bad.

Posted on Jun 21, 2009

  • 8 Answers

SOURCE: car will not start,battery good.Turn key in the

try jumpin it to double check its not the battery. if not check spark plugs. if that doesnt work then id safely say you'll either need a new starting motor or a fuel pump

Posted on Jan 29, 2010

dttech
  • 4803 Answers

SOURCE: will not crank turn key

Check fuse # 28 (15 Amp) with a test light. (Located in the Power Distribution Center (PDC) on the left side of the engine compartment) It should have power only when the ignition switch is turned to the START position. If there is no power there, then you probably have a bad ignition switch. The only other fuse involved would be fuse #8 (40 Amp) which is also in the PDC. If this fuse is blown a whole lot of stuff is not going to work - not just your starter. The starter motor relay (Also in the PDC) is controlled by the PowertrainControl Module. The wiring diagrams show it as a 5 pin relay whereonly 4 of the pins are used. If you check for power and ground at the connector pins for the relay, there should be one pin that is hot all the time. This is the power from fuse #8. a second pin should be hot with the key in the RUN and START positions. This would be the circuit running through fuse# 28. One pin should have continuity to ground (your test light should light up if you hook it to the battery positive terminal and probe this terminal.) This is the circuit that goes down to the starter. The 4th pin will have no continuity to anything at all until the ignition is placed in the START position, when it will have continuity to ground. This is the relay control circuit from the PCM.
If you dont have power at the relay connector as described, then you must repair the circuits between the fuses and the relay. If you don't have the grounds as describedfor the starter circuit, you ether have an open circuit going to the starter or a bad starter. If you are not getting ground on the control circuit from the PCM, it could be several other things causing your no-crank problem. It could be an open circuit between the starter relay and the PCM or it could be that the PCM is not allowing an engine start for one reason or another - The PCM will have to be scanned to find out what the problem is.

Posted on Mar 06, 2011

  • 116 Answers

SOURCE: 2007 chevy cobalt ls won't

Ignition relay or fuse could be the problem. When you turn the key to start do you hear a fuel pump kicking on and or do you have spark when you hot wire the starter (I know it's hard to check while trying to start it)? You can email me back and I might be able to pinpoint it more.

Posted on Jun 06, 2011

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i cant dope out that symptoms.

does it crank or not. be clear there.

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on A/T cars cranking is a first thing. so does it.?

Solenoids do not spin, the stroke only , it a linear motion.

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It can just be a dirty starter pinion, clean it , repeat.

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