Question about 1985 Chevrolet S-10 Blazer

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87 k5 blazer won't start suspect a missing wire between ignition switch and starter solenoid...is there supposed to be a wire connecting the 2?

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Check starter relay

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2005 starter wiring diagrams from ignition switch to starter soliniod


The ignition switch does not go to the starter solenoid . Pin 87 at the starter relay sends B+ voltage to the starter relay . Do you know what a starter relay is an how it works ? The ignition switch is an input to the PCM - engine computer . When the PCM sees this B+ voltage from the switch it energizes the starter relay sending B+ voltage to the starter solenoid . http://www.bbbind.com/free_tsb.html free wiring diagrams !

Mar 29, 2016 | 2005 Ford Freestar

1 Answer

Mariner 115 turns over like battery is dead but its not it was running fine then this started happening what could cause this


Try this YouTube link to get started:

Outboard Motor Won Start Try This

Also, a guy at this site has a similar problem:

Mercury 115HP 2 stroke won start FIXED Page 1 iboats Boating Forums 430218

The solution is to take a logical troubleshooting approach and not just throw parts at the issue hoping to get lucky. Here are some hints:
1) Measure the battery voltage. Then measure it again while trying to start the engine. If the voltage drops below 10 volts while trying to start the battery is discharged or bad. Charge it and then have it load tested at any auto store -- test is generally free.

2) If the battery checks ok, disconnect the large battery cables and clean the terminal ends and battery terminals thoroughly. That means both the battery end and the engine end. Reinstall the cables and tighten them securely. If you use wing nuts on the battery posts, replace them with stainless hex nuts and a start washer for better connections.

3) If the issue is not resolved at this point, Use jumper cables to jump directly to the starter. Black cable goes from battery NEG to engine block (unpainted bolt or bracket). Red cable goes from battery POS and touched to the large post on the starter solenoid that feeds the starter. If it still doesn't spin, you have a bad starter. If it does spin, then the solenoid is suspect.

The ignition switch, neutral start switch and the start switch wiring can also play into this but I doubt that's the issue. The solenoid can be verified by using a screwdriver to jump the small terminal to the large terminal to which the POS battery cable is connected. If doing that spins the engine, the solenoid is good and the wiring/switches are suspect.

Apr 13, 2015 | Cars & Trucks

2 Answers

1998 dodge ram won,t start off key


make sure the starter is wired properly... you would be surprised how many people forget where the little wire from the solenoid goes.

Feb 11, 2014 | 1998 Dodge Ram 1500 4WD

1 Answer

I bought a new starter for my 1983 k5 blazer because the old one went out. When i first installed it, it engaged, but after trying to shim it a few times, it stopped engaging. i hooked up jumper cables to...


Hang up the coat hanger and buy a test light or voltmeter. You need to find where power is lost between the key switch's start wire coming out of the ignition switch and ending at the starter solenoid. Since you can short the starter to work, there must be no power at the solenoid with the key held in start. You can backprobe the ignition switch connector and see if power is on the start wire with the key held in crank. If good, switch is working. Now, test the neutral safety switch in the same way, key held in crank, should have power in to switch, and gear in park, should have power out. If good so far, next would be the starter relay. You may need a wiring diagram from a repair manual to scope out the starting circuit. Be methodical and follow the circuit to the starter solenoid. The small purple wire at the solenoid should have power to it when the key is in crank.

I don't know what is up with the shims, but you should only use the same shims that the old starter had.

Sep 18, 2013 | 1999 Chevrolet Blazer

2 Answers

76 k5 blazer starter wiring confusion


Usually one is small enough to fit on the small terminal and the rest fit on with the battery cable.
The small purple wire from the key switch goes on the terminal marked S.
You could do a continuity test and check it with the battery disconnected by checking it back to the neutral safety switch.

Feb 11, 2013 | Cars & Trucks

1 Answer

Won't start


So it's a no crank condition? Do dash lights, gauges, and everything else work when the car won't crank over? If so, buy a cheap $5.00 testlight, and when the car won't crank, pull the small black wire off the starter solenoid. While someone holds the key in start (cranking) position and clutch pedal depressed, see if the black wire has power as it should. (Ground the testlight and just touch the wire's end terminal. If powered, the testlight will light up.) If power there, then the starter solenoid is failing. Toyota starters are very good units, but the solenoid's internal contacts get old and pitted.
If no power at the black wire, then the start circuit from ignition switch to clutch safety switch (on the clutch pedal) to starter relay to starter solenoid will have to be diagnosed. To double-check: take a single battery jumper cable and put it on the positive battery post connection. Put the other end of the jumper cable on the solenoid terminal where black wire was removed. Key can be off. Make sure car is in neutral, brake set. If starter now operates, solenoid is O.K., and it is a problem in the start circuit, -ignition switch, neutral start switch, or in the wiring.
Now find a grounding place for testlight under the dash. When car won't crank, check for power coming out of ignition switch on the black wire with white stripe. This is the start wire for the starter solenoid. Key must be in crank position. Wire shoud be powered-ignition switch is working. If no power, switch is failing. You can do the same for the clutch start switch-it's a simple switch, that when clutch is depressed switch is closed and passes power on from ignition switch to the starter relay (thus allowing power to the starter solenoid). Black wire, red stripe-this is wire from clutch switch to starter relay. When key is in crank, clutch depressed, this wire should be hot.
With me so far? Still haven't found a problem, or any loose connections? Next and last is the starter relay. It is located under dash, close to gas pedal, but under the center console, just forward and left of gear shifter. It can be tested and the wiring diagnosed there, but relays are cheap, so just swap in another and see if that helps.
If you have tried everything, and still no help, you could try a new wire from the relay to the starter solenoid. This is that black wire we started with. Older toyotas sometimes have a problem with degraded wiring not passing enough current to operate the starter

May 04, 2012 | 1992 Toyota Tercel

5 Answers

The clutch has to be in for my 85-s10 blazer to start and it wont start unless i use a screwdriver on the starter. any answers?


Your diagram is below. Since the starter jumps at the solenoid, the problem would be the ignition switch, the clutch interlock, or the wiring. Check for power at the yellow wire that goes to the switch under the clutch pedal when the key is turned to start. If you have power on the red wires to the ignition switch but no power coming out when the key is turned to start, replace the switch. If you DO have power on the yellow wire, try bypassing the interlock by pulling the connector off and connecting the terminals inside the connector with a large paperclip. If that doesn't work, the purple wire from the interlock to the starter solenoid may be broken. Please let me know if you have more questions.

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Oct 16, 2011 | 1985 Chevrolet S-10 Blazer

2 Answers

1999 Ford Explorer XLT 5.0 AWD - starter will not engage. I hve replaced the starter/solenoid, ingition relay, ignition switch, neutral safety switch and battery. battery cables are clean and solid. I can...


If you replaced the solenoid was there one wire to the solenoid or two? If the new solenoid had two small posts did you connect the single wire to the S (starter) or I (ignition) side? If you connected to the I side this is your problem. If you had two wires were they swapped from original locations? If not check and see that you are getting electricity from the ignition switch to the solenoid. Have someone hold the key at the start position and measure if you have 12+ volts at the S side of the solenoid.

Nov 27, 2010 | Ford Explorer Cars & Trucks

2 Answers

2004 chevy silverado with new starter installed as soon as I reconnect the battery cable the starter engages without key even in igniton


It could be any of the following,

1. The field wire to the starter (the wire that is hot when you turn the ignition switch to the start position, and should be connected to the "S" on the solenoid) has the wire connector pushed over and touching against the main connection and battery cable on the solenoid, or has insulation missing somewhere on the wire and the exposed wire is touching together with an exposed wire from one of the constantly hot wires from the main battery connection on the solenoid.

2. The ignition switch is stuck in the start position (the switch itself, not the key and tumbler) however if you were not having a problem with the ignition switch before you replaced the starter then it is unlikely to be the problem.

3. The starter solenoid is defective. This does happen once in a while and you should be able to have the starter tested where you bought it from.

Apr 23, 2010 | 1991 Chevrolet C1500

1 Answer

Wiring a STARTER I A 87 SUBURBAN


I presume the two leads you mention are:-
a) very heavy main +12V power lead from the battery terminal with approx 3/8" eyelug terminal,
b) less heavy wire that connects battery power to main vehicle fusebox for power distrubution- this cable may incorporate a fusible link.
The two leads (as above) connect onto the same heavy duty 3/8" terminal on the starter motor.
The lower 3/8" power post (closest to the motor housing) connects only to the starter motor and should not normally be tampered with.
There should be one more light duty wire that operates the starter motor engage solenoid .- This is connected back to the ignition switch 'Start' +12V control output.

Jul 11, 2009 | 1987 Chevrolet Suburban

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