Question about 1999 GMC Jimmy

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I have to put a wire between 2 pins in the starter relay to start my 2004 GMC Siera, got a new relay, same problem

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It sounds like a faulty ignition switch or a bad connection from switch to relay also check the earth to the relay

Posted on May 06, 2010

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Why can I not get power to the small wire going to the starter on my 2004 taurus


You need to know how it works before you can diagnose it. There is a starter relay in the under hood fuse/relay box .. This relay is controlled by the PCM - engine computer . Does you car have a anti-theft system ? a red light on top of the dash or a SECURITY light on instrument cluster ? Is the red light flashing fast when trying to start the car . If you find an pull the relay out an look on the bottom you will or should see four numbers . 30 & 87 , 85 & 86. You can test from the socket where the relay plugs in . PIN'S 87 & 85 should have B+ voltage . PIN 30 takes voltage from PIN 87 to start the vehicle , PIN 86 is the control from the engine computer . The PCM gives a ground on this circuit to energize the relay closing the contacts inside ,completing the circuit between B+ voltage on PIN 87 to PIN 30 to start the car.

Feb 04, 2016 | 2004 Ford Taurus

1 Answer

My relay keep blowing bad its keeping my car for


the relay command starter signal small wire at starter look at the relay youll see numbers at the legs side 30 87 are your contacts 85 86 are the relay coil make sure all contacts are clean when car wont start hook test lit between 85 86 should lit up next join 30 87 use a piece off wire car should crank if doesnt check power at pin 30 o 87 one must be hot if every check pass replace starter solenoid

Sep 27, 2014 | Cars & Trucks

3 Answers

I have a 2004 Chevy trailblazer no start no crank but if I put key on hot wire the starter it will start I replace new ignition switch and new starter relay b


Before you do any thing check for loose or bad connections. Also check you ground connection to engine. Check Fuses, relay and for a Fusible Link open circuit. Now let me explain what a Fusible Link does. They are short lengths of small gauge wire installed between the Battery and the Ignition Switch, or the Battery and the Fuse Panel. They'll melt and open the circuit before damage occurs in the rest of the circuit. I hope this was helpful you.

Aug 09, 2014 | 2004 Chevrolet TrailBlazer

1 Answer

I have a 93 gmc sierra 3500 with 6.5 turbo diesel starter just clicks put new starter on and still doing it put new, batteries in checked all fuses and wire connections if I cross it on the starter it will...


its not a relay problem if the starter is clicking it is a resistance problem check voltage on the big supply wire and on the small signal wire if either is lower than battery voltage start moving back on wire untill battery voltage is present, repair as necessary

Oct 25, 2012 | Cars & Trucks

1 Answer

Alternator wont charge


at alternator gig wire battery voltage,one wire battery volts one less . battery volts wire goes to automatic shut down relay, less then battery voltage wire to pcm fuse will be 20 amp just ck all that size.

Aug 05, 2012 | 2001 GMC Sierra 2500HD

1 Answer

My GMC safari 2004 has been blowing Ignition 1 fuse (40 amps) at the moment I turn key to start position,even without starter disconnected it blowed but i replaced the fuse and i removed the starter r


The problem could be a shorted park netual safety switch . Do you know what a wiring diagram is ? It shows all the componets involved in a electrical circuit ! You IGN.1 fuse 40amp , GM calls it IGN A fuse 40 amp . It feeds the ignition switch and pin 30 at the starter enable relay .When you turn the key to the start position it sends B+ voltage to #8 crank fuse , located in the I/P fuse box ,from there it goes to the park netual safety switch , to pin 86 or 85 of the starter enable relay ! If you pull the relay out of the fuse box an look on the bottom you will see this four set's of numbers ,30,87 & 85 ,86 You can test at the fuse box where the relay plugs in . Here is a video on how to test . The guy presenting the video uses a horn circuit , but it works the same way . It happens a lot , the park netual safety switch shorting out . It may or may not be the problem . VEHICLE RELAYS Operation Diagnosis
Here is a web site for free wiring diagrams
http://www.bbbind.com/free_tsb.html Enter your vehicle info . then under system click on engine , then under subsystem click on starting . Then click on the search button an a link will pop up , click on it .You will see all the componets , connections , wiring colors etc... for the starter circuit for your vehicle .

Apr 17, 2017 | 2004 GMC Safari

1 Answer

Have a ford f 350 2004 model manual ****** motor wont turn over replaced clutch safety switch ck starter relays can b pull started


Did you check for power at the starter ignition terminal? It is the small YELLOW/BLACK wire on the starter. If there is power there, replace the starter. If there is no power there, you should check your starter relay an its associated fuses.
The relay primary side is protected by fuse number F2.31 (15 Amp) in the Central Junction Box. This fuse provides power to the clutch safety switch on the WHITE/PINK wire. Then the power leaves the clutch safety switch on the TAN/RED wire and goes to pin 86 on the relay.

The relay secondary side is protected by fuse number F2.113 (30 Amp) in the Central Junction Box. It provides power at pin 30 on the relay, which is also located in the Central Junction Box.

Pin 87 at the relay is the YELLOW/BLACK wire metioned earlier and goes to the starter motor.
Pin 85 at the relay is the primary GROUND. This should be ground at all times.

The ENTIRE starting system can be checked/diagnosed from the pins at the starter relay if you use the correct methods and equipment.

Sep 11, 2011 | 2004 Ford F350

2 Answers

Car ws misfiring and overheating, replaced spark plugs/wires. car was overheating replaced thermostat. These fixed both my issues, however before fixing the overheating problem the car after shutting it...


I wonder if the starter relay is bad. When Napa tested the starter they likely just put 12 volts direct to the drive. The motor it seems is fine but if the relay (attached to the starter motor?) is sticking or failed then you get your symtoms.
I suggest you pull the starter motor again and have them, NAPA, test the relay. You MAY be able to replace the relay only. It might be possible to clean it out or rebuild it, but thats iffy at best.
Good luck

Jun 05, 2011 | Ford Contour Cars & Trucks

2 Answers

My 1993 Toyota Tercel does not start when key is turned. New battery, all fuses checked and fine. When the doors get opened, hazard lights start blinking for 15 blinks, then pause, then 15 blinks. This...


This sounds like a starter disable feature of a car alarm. Somewhere under the dash you are going to find a box with the start wires running to it. The start wire is black with a white stripe and is thick, about a 12 gauge wire. It will come from the ignition switch and run into a relay or box. It could be installed anywhere as it is aftermarket. Once you find it, you can reconnect both ends of the starter wire and you can start it with the key. I would disconnect the power to the alarm or your lights are going to flash at random. The factory alarm (just in case it is the issue, but that isn't likely) is located behind the radio and ashtray.

Dec 14, 2010 | Toyota Tercel Cars & Trucks

1 Answer

Can the PCM be at fault for a 2004 dodge durango not starting? I attempted to start my vehicle after it had been operating fine all day and it will not crank, the gauges and all dash lights flash, the horn...


No , probably not . Do you know what a starter relay is ? It's located in the under hood fuse box ! That 30amp fuse sends B+ voltage an current to pin #30 , if you find an pull out the relay an look on the bottom you will see 4 sets of numbers 30 & 87 an 85 &86 . 30 is Battery voltage which when energized the relay will send this B+ voltage through pin 87 to the starter solenoid turning on the starter . You could take a jumper wire an jump those 2 pins an the starter should spin . Now , 85 & 86 are the control side of the relay ,Pin 86 should have B+ voltage supplied by fuse #32 10amp located in the junction block , maybe inside vehicle fuse box . Pin 85 is from the PCM , the PCM will supply a ground to this side of the control circuit if it see's a input from the park neutral safety switch . Do you know what that is ? Try shifting to neutral an see if it starts . Also if jumping pins 30 & 87 the starter doesn't spin . check the Positive battery cable using voltage drop . You may have a bad cable . Starter Voltage Drop

Mar 12, 2017 | 2004 Dodge Durango

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