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New style replacement glow plug relay for the Jeep Liberty CRD. This glow plug module can run both the 5V and 7V glow plugs. Glow plug voltage is set by the ...
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Not sure about a caravan but I know a honda civic has a main relay that turns on the injectors and the fuel system. If your caravan doesn't have that it might be a computer problem or possibly the crank sensor.
Hello fellow auto mechanic. Let's take one step at a time .Your engine turns over because your starter is connected directly to your battery.It's possible that the crankshaft sensor was the the problem, but NO. Also new fuel pump well maybe but not yet. There may be more to this story and as always not what you may have done but what you don't know you have done. First when you put your key into your ignition and turn to on you should here a noise at the back of your cars fuel tank. The sound will be a whiiiirrrrr sound indicating that your fuel pump is doing it's job and pushing fuel to the engine. It will be a very significant sound and you will know it when you here it. If this doesn't happen go to your power control center under your hood on LEFT side open it and you will find a relay for your fuel pump. This is an easy check because you can pull the relay for your horn LABELED the same, and use in place of your fuel pump relay to see if you can start your car. If this doesn't do it ,one more test look at the relays and find the ASD relay this is the main shut off to your vehicle. Now if this doesn't work it is very possible that you or whoever replaced your fuel pump may have crimped some wires or even forgot to hook up the the plug to the pump. This kind of stuff happens all the time, that's why people are always asking questions.Check the simple stuff first, and I believe you will find your problem. It's probably something very simple , don't get discouraged. One more thing , why are there so many 96 Caravan problems? Please get back to me on the above and let me know if I have helped you. Don't forget to vote and GOOD LUCK.
P0685 DODGE - Auto Shutdown Relay Control Circuit Failure Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible causes
- ASD relay circuit is open or shorted - Failed Auto Shutdown relay - Failed ECM
Tech notes
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.
P0685 DODGE Description
Short or open in Auto Shutdown (ASD) relay circuit
P0688 DODGE - Auto Shutdown Relay Control Circuit Low
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible causes
- ASD relay circuit is open or shorted - Failed Auto Shutdown relay - Failed ECM
Tech notes
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.
P0688 DODGE Description
The Front Control Module (FCM) has detected the supply voltage below an acceptable value
The big rectangles are referencing the engine, the cylinder associated to it's "firing" are the colored circles, and the are also the location of the spark plugs....the smaller lego-looking block is your coil pack. The spark plug wires run from the coil pack to the spark plug on the engine. The wires match 1 to1 or black to black...and so on....
When these are matched to each cylinder/spark plug and it's wire leading to the matching coil pack position, this is it's "firing order". If one of the wires is "crossed" meaning, not 1 going to 1, then the engine will "miss-fire".
Did you Check for Power (Voltage) before the Electronic Ignition Coil?
There is an electrical connection plugged-in and is located to the rear of the Ignition Coil. Slide the clasp lock (colored red) out and push of the clasp release and pull off the connection. Check for Voltage. If there is Voltage at this electrical connection but no spark after the Coil then the Coil needs to be replaced. However if there is no Voltage at this connection, then check the Automatic Shutdown Relay located in the IPM Fuse and Relay Box located on the left side (your right side) of the engine compartment.. Remove the Cover. The identification and location of the Fuses and Relays should be on the back (inside) o fthe Cover. You should have a Spare Relay in that Box. Switch out the Spare and the Automatic Relays. If no Spare then use a Relay from a non-engine operation Relay that is the same Type (size and shape) replug-in the electrical connection at the Coil and check operation. Unplug the Coil connection and again check for voltage.
There are also numerous Sensors that come into play dealing with the engine operation. However one Sensor will prohibit any spark from being sent to the Coil. If the Crankshaft Position Sensor is faulty or not sending information to the computer it will, there will be no voltage sent to the Coil. The Crankshaft Position Sensor is located on the rear of the engine, next to and on top of the the area of the transmission bell housing. Remove the Battery and Battery Tray to gain access. There should be a cluster of wires going on top of the transmission and going towards the rear of the vehicle. There should be two (2) wires coming out of that wire cluster, going to the left (your left) toward the engine block in the area of the transmission bell housing. The Crankshaft Position Sensor is bolted onto the engine with a 10mm bolt. Unplug the Sensor (using the above technique). Reconnest the Battery (no need to put in tray). Crank the engine and check for voltage coming out of the Sensor (not the connection) It should be around 5 volts. If NO Volts are received: remove the bolt, and pull the Sensor straight out. There should be a paper spacer on the new Sensor. Leave this paper spacer on there.
This should get you started or even (possibly) fixed.
Let me know if this helped, or if you have additional information or questions. Feel free to conatct me at FixYa.com!
Check if you still getting fuel and sparks, two items need to keep the car running. Check fuses and fuel pump relay, if needing new relays go to the junk yard and get couple of them for nothing. Checking making sure you getting fuel and fuel pump working properly, unplug the the main coil wire to distributor so the car wont start we just want the engine just to turn over. under the hood, locate fuel filter, disconnect the line to or from it, wrap the bottom of the hose with old clothe firmly and to remember to point the house downward away from your face so it wont splash at you. and have a friend turn ignition over just like starting, see if the fuel come out with good pressure. if fuses and relay check out, your crank sensor may be bad, being 91' strong possibility. crank sensor send info to computer telling to send fuel to your injectors. For sparks, make sure you plug the main wire to distributor back. pull one plug wire and get spare plug, plug it and ground the plug and have a friend turn the engine over and see if you getting sparks, do not touch the plug, big shock. No sparks, check the coil if you getting 12v, if yes, than your cam sensor is faulty. The cam sensor work just like the crank sensor but telling the computer to send sparks to the distributor. Common for older European cars, crank and cam sensor tend to become faulty after years of service due to age and heat abuse.
inside the front bumper between the front grill and the a/c condenser
The relay mounting location is designed to dissipate heat. Ensure the relay is securely attached to prevent relay "thermal" shutdown and relay damage, resulting in possible engine overheating.
Hello what you need to do first is determine fuel problem or spark problem when this happens again take your gas cover off the fuel filler listen for a hum from your fuel pump if its not present the pump is most likely bad if the fuel pump relay checked out good you need to test for spark buy your self a cheap spark tester that lights put it on to the coil check for spark while turning over if none present you need to trace from coil ,to ignition module,possible heating up cutting out goodluck please rate
hello test all your fuses its possible you snapped engine control module fuse ecm,ign, check fuses with a test light ground to a good ground test both sides of fuse usaully at the tops you will see two small open areas with a piece of small metal exposed this is were you put the probe to test also look underhood drivers side for a secondary fuse box goodluck
what is a heat spark, never heard that name before?
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