Question about 1996 Chevrolet Astro

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After head job, no spark. White wire on center of coil connnector has no where to plug into. (Has femal spade connector in plastic shell) (1996 astro 4.3) Cycling key on / off rapidly does not produce spark either.

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The white wire does not connect to anything. As for the no spark problem, check to see if you reconnected the crank sensor.

Posted on Mar 28, 2011

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Posted on Jan 02, 2017

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2 Answers

Jeep 3.7 cylenders 2 & 4 not firing


3.7 V6, mileage?

most likely the HV wires bad.

then bad coil pack.

did you check spark directly at the coil pack?

i use 2 known good HV wires to do that and 2 good test spark plugs.

both plugs grounded to engine (shell)

that is how you test any wasted spark coil pack. 3 coil pack.

if that fails the FSM shows, unplugging it and check the coil resistances. if wrong the pack is bad,

keep in mind the res. can read ok and coil be bad ,due to internal insulation break down (internal shorts)

if thats ok. the resistance , make sure the wires are not (primary)

to the coil (the low voltage connnector)

if that is ok, its mostly likely a bad coil, (pray not bad PCM)

if tool-less? start with cheap parts , work to expensive. (guessing)





now wasted spark 101.

if one line opens , both spark plugs die. no spark

the wasted spark is wired in SERIES. ( like Christmas lights)

the magic cuts cost of 6 coil\'s.

so if the HV wires are say, cheap , carbon wire and open

you lose, both spark plugs. use MAG wire and end this issues.

get some nice NGK mag wire or Bosch Mag wires.

you can see i hate carbon wire. for good causes.

(carbon string wire)

mag wires is real wire that is coil spun and is inductive. it

has the correct impedance but is not a resistor its and inductor.

and lasts the longest , and worth every penny.

Mar 29, 2014 | 2006 Jeep Liberty

2 Answers

How to replace ignition coil?


There are TWO types of ignition coils a external that is bolted to the intake manifold in front of distributor. Internal this one is mounted on top of distributor cap. Remove holder ring for spark plug wires then remove protective cover 2 screws 7mm then remove the four screws that hold coil in place. there are three wires 1 red and 1 white these have a double spade connector on them remove with needle nose pliers the third has eyelet that screws down with one of the hold down screws. REMEMBER TO MARK THE POSITION OF THE SPARK PLUG WIRES THEY ONLY WORK IN THE RIGHT FIRING ORDER 18436572 clockwise rotation.

Nov 08, 2013 | 1991 GMC Suburban

1 Answer

1996 Chevy Astro Van--"Will not


I would check the rotor very carefully. They tend to burn a hole through the plastic under the center tab. It's hard to see sometimes. The spark follows that path instead of to the wire terminals. You may just want to try a new distributor cap and rotor.

Aug 08, 2011 | 1996 Chevrolet Astro

1 Answer

How do I install a Sunpro Super tach 3 in a 1987 Mustang 5.0


The Black wire will connect to body ground, and it should be a good solid ground and if this wire is not grounded well then you might receive a primary voltage shock if you touch anything that is metal or grounded inside of the vehicle when the engine is running.

The Red wire should be connected to power when the key is in the "Run" position only, and a good place to find that source is one of the "IGN" connections at the fuse panel using a covered female spade connector. Use a test light and be certain that the connection only has power when the key is in the "Run" position, and has no power when the key is in the "Off" or "Accessory" position.

The White or Yellow wire should connect to the "LPS" connection at the fuse panel next to the LPS fuse using a covered female spade connector.

The Green wire will connect to the "-" negative side of the ignition coil or to the "Tach" or "Test" lead that runs from the negative side of the ignition coil. To locate the lead run down the wire from the negative side of the ignition coil and the lead should break off from that wire and it should have a tag on the wire that will say either "Tach" or "Test" (sometimes it is just an empty black wire connector) and that is if the lead does not come straight off from the wire connector at the ignition coil. If there is no lead you can get a wire tap connector to tap into the wire from the negative side of the ignition coil and then use a covered male spade connector to connect the Green wire from the tachometer to the wire tap connector.

Here is a diagram to help assist you and if you can not download the image right click on the image and then select "save picture as..." or "save image as..." and from your image viewer you should be able to read this diagram or print it out, and let me know if you require any further assistance.


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3 Answers

1989 astro van turns over will not start seems not getting fuil gas tank full


#1 NEED TO VERIFY SPARK AT SPARK PLUGS # 2 CK FUEL PRESSURE AT SCHRADER VALVE ON FUEL RAIL ,,PRESSURE DEPENDS ON TYPE ENGINE ....IF NO SPARK AT SPARK PLUGS CHECK SPARK FROM COIL WIRE , IF NO SPARK AT COIL ,CHECK VOLTAGE TO IGNITION COIL SHOULD BE 12 VOLTS, IF NO VOLTAGE AT COIL ( KEY ON ) CHECK FUSES THEN IGHITION SWITCH. IF NO FUEL PRESSURE AND FUEL PUMP RUNS REPLACE PUMP .. CK VOLTAGE TO FUEL PUMP WHILE CRANKING . CK USING PUMP GROUND WIRE AT THE PUMP CONNECTOR THIS WILL PROVE GROUND ALSO. USE TEST LIGHT TO VERIFY

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1 Answer

Need to know how to hook up a tachometer with a shift light on it there are four wires


The Black wire will connect to body ground, and it should be a good solid ground and if this wire is not grounded well then you might receive a primary voltage shock if you touch anything that is metal or grounded inside of the vehicle when the engine is running.

The Red wire should be connected to power when the key is in the "Run" position only, and a good place to find that source is one of the "IGN" connections at the fuse panel using a covered female spade connector. Use a test light and be certain that the connection only has power when the key is in the "Run" position, and has no power when the key is in the "Off" or "Accy" position.

The White or Yellow wire should connect to the "LPS" connection at the fuse panel next to the LPS fuse using a covered female spade connector.

The Green wire will connect to the "-" negative side of the ignition coil or the primary side of the ignition coil, and for later model GM HEI equipped vehicles this will be the "Tach" connection next to the main "Bat" connection on the distributor cap if the ignition coil is mounted inside of the distributor cap, or to the "Tach" or "Test" lead that runs from the negative side of the ignition coil if the ignition coil is mounted separate from the distributor. To locate the lead run down the wire from the negative side of the ignition coil and the lead should break off from that wire and it should have a tag on the wire that will say either "Tach" or "Test" (sometimes it is just an empty black wire connector) and that is if the lead does not come straight off from the wire connector at the ignition coil. If there is no lead you can get a wire tap connector to tap into the wire from the negative side of the ignition coil and then use a covered male spade connector to connect the Green wire from the tachometer to the wire tap connector.

Here is a diagram to help assist you although it might be hard to make it out, and let me know if you require any further assistance.



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1 Answer

Vw camper T2 bay ignition problem


Please re-post your question as it sounds like you are talking about the later vanagon and not the bay-window type 2 since the bay-window units did not have fancy idle control and stabilizer units.

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1 Answer

Coil wires on 1984 range rover what goes where is it a negative to the dizzy and from the ballist resitor to the pos or neg and the one to the starter? and also i have a white wire and a white and puirple...


The center wire from the ignition-coil goes to the center-hole [female] of the distributor.Those other wires are for the coil's positive and negative terminal.
If you have not disconnected them, just let them be-to avoid inury or damage to the engine.

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1 Answer

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you might see a plastic cosmetic cover over the valve cover area , with like 4 screws holding it down , allen headed screws i think , you will find your wires and plugs under that cover . actually you will find 2 coils with 2 10mm bolts on each coil , each coil has a spark plug boot built on to it for 1 plug and 1 actual spark plug wire to a second plug , very short , unplug the coil connector, unbolt it and pluck it out of the hole , and see your spark plug .

J5

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