Question about 1985 Chevrolet Chevy

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85 chevy silverado engine wont start

When you jump the distributor with the a jumper wire from the alternator it runs. i got power going to the distributor with the key on engine off and while cranking but it still only starts when you use the jumper wire

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Bad key switch,sounds like the key switch has burned out on that spot to hold power, hope to help you, robert b.

Posted on Jul 17, 2009

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2000 chev wont start at key


From the ignition switch there is a yellow wire that is for the starter. probe it when trying to start. If you have no voltage replace the switch. Also, I believe there is a fusible link in the wire by the starter. It will be a different color than purple. Probe on the back side of it to see if there is voltage at start up. If so, replace with the smae color link.

Apr 10, 2014 | 2000 Chevrolet Silverado 2500

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Replaced starter and ignition relays under hood on my 99 chevy silverado and to wont do anything no security light no nothing is on everything good on all connections replaced wiring harness...


Is power getting to the ignition switch? Do the warning lights and gauges come on when key is turned to on? That would verify power in and power out at the switch. Then you would need to check the start circuit. A single start wire comes out of the switch, the signal travels through the neutral safety switch and a starter relay and then to the starter solenoid mounted on the starter. Solenoid closes contacts so battery power can operate the starter. If new starter doesn't work, power has been lost between the ignition switch and the starter.
If no power to the ignition switch check maxi fuses, all fuses in fact, and possibly a fusible link from the battery that may be the feed for the switch.

Sep 22, 2013 | 1999 Chevrolet Silverado 1500

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2000 chevy silverado v6 vortec engine, died driving, changed fuel pump, plugs wires, etc. and still wont start. ever heard of that


1st, check to see if the fuel pump runs for 3 seconds when you turn the key to run (not start). If it doesn't run, then check the fuel pump fuse & relay in fuse box under hood, if OK, (spray starting fluid in the intake to see if engine fires at all), if no fire then look towards the ignition as the problem. There are 5 things need to start an engine: 1. fuel (delivered & pressure), 2. air, 3. spark (distributor/ignition module or pickup coil), 4. rotation & timing, 5. compression. any of these that are wrong or not there, the engine fails.

Sep 20, 2011 | 1999 Chevrolet Silverado 1500

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I have check engine error codes 11, 12 on my 95 grand cherokee limited the engine wont start just keeps turning over


Code 11 means no distributor reference signal detected during cranking. Check the circuit between the Distributor and PCM (computer). Also, keep in mind the following operations/tests apply to these relays only: Automatic Shutdown (ASD) , Fuel Pump and Ballast Bypass. For operations/tests on all other relays refer to the appropriate test.

OPERATION:
The relay terminal numbers can be found on the bottom of the relay.
Terminal number 30 is connected to battery voltage and can be switched or B + (hot) at all times.
Terminal number 87A is connected (a circuit is formed) to terminal 30 in the de-energized (normally OFF) position.
Terminal number 87 is connected (a circuit is formed) to terminal 30 in the energized (ON) position. Terminal number 87 then supplies battery voltage to the component being operated.
Terminal number 86 is connected to a switched power source.
Terminal number 85 is grounded by the Engine Controller.

TESTING:
Remove relay before testing.
Using an ohmmeter, perform a resistance test between terminals 85 and 86. Resistance value (ohms) should be 75 ±5 ohms for resistor equipped relays.
Connect the ohmmeter between terminals number 87A and 30. Continuity should be present at this time.
Connect the ohmmeter between terminals number 87 and 30. Continuity should not be present at this time.
Use a set of jumper wires (16 gauge or smaller). Connect one jumper wire between terminal number 85 (on the relay) to the ground side (-) of a 12 Volt power source.
Attach the other jumper wire to the positive side (+) of a 12V power source. Do not connect the jumper wire to relay at this time.

CAUTION: Do not allow the ohmmeter to contact terminals 85 or 86 during these tests. Damage to ohmmeter may result.

Attach the other jumper wire (12V +) to terminal number 86. This will activate the relay. Continuity should now be present between terminals number 87 and 30. Continuity should not be present between terminals number 87A and 30.
Disconnect jumper wires from relay and 12 Volt power source.

If continuity or resistance tests did not pass replace relay. The Powertrain Control Module (PCM) and connector are located in the engine compartment, mounted to the inner fender, next to the air cleaner housing (click image fo zoom).
DTC 11 - No reference signal during engine cranking. No camshaft reference signal was detected during engine cranking.
DTC 12 - Battery disconnect. Battery input to PCM disconnected during last 50 key starts.
DTC 42 - ASD relay control circuit. An open or shorted condition detected in the auto shut down relay circuit.

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Hope helps.

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1996 chevy s10 pickup brand new motor new everything but wont start thought it was a timing problem..fixed it wondering what it could be? Maybe something with the distributor but not sure where to find a...


Battery light indicates alternator failure. If you have a voltmeter, check voltage at battery with engine running. Should be at least 14 volts. If no voltmeter, remove alternator and take it to parts store for testing.
If the alternator is bad and that is your only problem, the truck should jump start, but it will not go far unless the battery is charged. OK?

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My 1993 chevy silverado will not start it has fuel shooting into the throttlebody and has spark yet will not start any ideas as to what might be wrong? The plug wires are in the correct order.


You should probably check the timing. It's not uncommon for Chevy's to jump time when they are shut off. Bring the engine around so the timing mark on the bottom pully is at 0 and lift the distributor cap. The rotor button should either be under the #1 plug wire( front wire on driver's side) or 180 degrees away from it. If it's off 180 then turn the engine over until the 0 lines up again. The rotor button should line up then. If it doesn't then turn the distributor until it does and try to start it. It should start there but you will still have to change the timing chain and gears.Hope this helps.

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1 Answer

97 toyota avalon was running went dead while driving ,now wont start lights go dim,abs light and traction lights come on when jump started


Sound like you have a bad alternator, poss bad battery too.If you can jump start it with a volt meter check voltage at battery should have above 13.5 volts, do this after you unhook jumper cables and engine running.If bad voltage reading replace alternator make sure you charge battery before starting engine with new alternator or it could damage alternator.If good voltage have battery check.Hope this helped.

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Diagrams & specs sheets '85 chevy silverado


Go to autozone.com and register,and you'll be able to access their online repair manual.It contains everthing you'll need.

May 26, 2009 | 1985 Chevrolet Chevy

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