Question about 1994 Chevrolet C/K 3500

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Starting system I need to know a starting system from ignation switch to the starter motor. I can,t find a scematic diagram enywhere. It won,t start. starter motor ok. I can by pass it and start. I can,t find any relay outside on the firewall.( sorry two relays. One for fuel pump, but another axuarly) Is there anything else? jimyanky@yahoo.ca

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1999 f expedition [it craincs but will not fier ]

Posted on Jul 24, 2008

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If it's an automatic, it has a Transmission range Switch (neutral safety switch). If it's a manual transmission, it'll have a clutch start switch. Here's the schematic:
starting system - 0c0b8b5.gif

Posted on May 22, 2008

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1 Answer

The truck won`t turnover,battery is good and the starter has been changed. 1995 Chevy Silverado


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Looking at a wiring diagram to see what all is involved in starting your vehicle . Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. Year , make , model and engine size. Then under system click on engine . Under subsystem click starting . Then click the blue link . You will see the ignition switch , transmission range switch ,starter solenoid . Testing the electrical circuit with a volt meter till you find the problem . Check the heavy red cable from the battery positive to the solenoid .
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Hey Opie , how are thing's in Mayberry ? Ha Ha Ha , bet you get that a lot .
The ignition will not turn over. You mean the starter will not turn over ? When you turn the key to the start position nothing happens ? The starter doesn't spin the engine .
Could be a few reasons . High resistance in the starting circuits . Do you have and know how to use a volt meter ? Doing voltage drop testing on the starter motor , cables .

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Looking at a wiring diagram and testing the control side of the starter circuit , relay ,ignition switch , wiring etc... Do you know what a wiring diagram is and how to read one ? Video's on youtube showing how to understand diagrams . Here is a web site for free wiring diagrams . http://www.bbbind.com/free_tsb.html
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Do you know what a wiring diagram is ? Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Click on engine under system then under subsystem click on starting .Then click on the search button , then on the blue link . This is a wiring diagram of the starter electrical circuit. Do you know what ignition switch is ? the electrical part. , how about the starter relay , transmission range sensor ! There is one thing you can try , move gear selector to neutral an see if it starts then . If that does nothing ,check for B+ voltage going at the starter relay . Jumping pins 30 & 87 at the relay socket , where the relay plugs into . will cause the starter to engage an spin the engine . If you look on the bottom of the relay you will see four sets of numbers 30 & 87 - 30 should have B+ voltage , 87 goes to the S terminal on the starter solenoid . An 85 & 86 are the control side .86 at the relay socket comes from ignition switch through the trans range sensor to the starter relay coil ( electro magnet ) . Watch these videos too .
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Well Sandra , the thing to do would be to get it to turn the engine over with the key , Then diagnose the no start problem . Look at a wiring diagram (do you know what that is ?) When you turn the key to start , the electrical part of the ignition switch sends B+ voltage to the starter interrupter relay through the clutch switch to the starter motor solenoid . Testing the electrical circuit with a DVOM - digital volt ohm meter with the help of a wiring diagram ,so you know where to test is the proper way to diagnose the problem . Not guessing ,an rigging the stuff . You can find free wiring diagrams here http://www.bbbind.com/free_tsb.html
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While driving the a/c quit getting cold and the gearshift orange indicator light disappeared. The truck ran to its destination and I shut it off. I tried to start it again but it would not turn over. I...


Starter motor relay , transmission range switch , wiring ! Do you know what a wiring diagram is ? How to read one ? How to use a DVOM - digital volt ohm meter ?
How to voltage drop test starter motor circuit
do you know what a relay is ? how to test one .
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How to voltage drop test starter motor circuit
Does it have a manual or automatic transmission ? Manual ? clutch switch . Looking at a wiring diagram I also see a starter cut relay !
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