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No spark now what?
- Thread starter skipabeat
- Start date
joe_peters
NAXJA Forum User
- Location
- Grants Pass, OryGun
Plug and unplug the CKP a couple of times.
ckp is the crank shaft position sensor. some refer to it as the cps
not sure what the coil pick-up is unless you mean the ignition control module that the coil sits on.
the magnetic pickup in the distributor is for injector timing but wont stop it from sparking if bad.
not sure what the coil pick-up is unless you mean the ignition control module that the coil sits on.
the magnetic pickup in the distributor is for injector timing but wont stop it from sparking if bad.
Re: No spark now what? Help!!
Well before i put this thing on Craigslist i will give this one more shot!
Replaced the crank sensor and still no spark, so the list grows plugs, cap, rotor, coil, crank sensor.
Read in one post something about the fuel pump having to make a sound as the key is turned, so my question is would that cause no spark???
Any other idea's would be greatly appreciated, don't want to dump my Jeep but I'm close to the end.
XJ89 the pick up coil is under the distributor cap on my 98.
Well before i put this thing on Craigslist i will give this one more shot!
Replaced the crank sensor and still no spark, so the list grows plugs, cap, rotor, coil, crank sensor.
Read in one post something about the fuel pump having to make a sound as the key is turned, so my question is would that cause no spark???
Any other idea's would be greatly appreciated, don't want to dump my Jeep but I'm close to the end.
XJ89 the pick up coil is under the distributor cap on my 98.
magimerlin
NAXJA Forum User
- Location
- Flatonia, Tx
So you had spark before the head gasket change and now you don't? If thats the case recheck everything that you unplugged to get the head off in the first place. My guess is that you over looked plugging something back in.
And stop just throwing parts at it. that gets expensive. do a little diagnosis.
And stop just throwing parts at it. that gets expensive. do a little diagnosis.
winterbeater
NAXJA Forum User
- Location
- Royal Oak, Michigan
ASD relay recieves signal from PCM and sends juice to the fuel pump and coil. Do you smell fuel. If you pull a plug after cranking, is it wet from gas? Did you remove the distributor while you were working on the head?
I smell fuel, there is fuel to the fuel rail, plugs seem to have fuel on them but i would not say ...soaked.
I did not touch the distributor, i checked the firing order and its correct.
I do not hear my fuel pump make any sound when the ignition is turned on.
Where can i find the ASD? Is there a way to check it.
The only thing i have not replaced is the pickup coil under the distributor cap.
I did not touch the distributor, i checked the firing order and its correct.
I do not hear my fuel pump make any sound when the ignition is turned on.
Where can i find the ASD? Is there a way to check it.
The only thing i have not replaced is the pickup coil under the distributor cap.
joe_peters
NAXJA Forum User
- Location
- Grants Pass, OryGun
The pickup in the distributor is only for firing the injectors, the CKP provides the trigger to the ECU for spark.
Either you have adequate spark--blue & strong, or not--yellow and weak.
How much juice in the battery? It can crank the engine but not have enough volts to allow the ECU to function. You should have more than 9v while cranking.
Either you have adequate spark--blue & strong, or not--yellow and weak.
How much juice in the battery? It can crank the engine but not have enough volts to allow the ECU to function. You should have more than 9v while cranking.
Purchased a meter and when i came back my internet was down for the day.
I'm getting 10.50 at the battery cranking the engine so that's not the problem.
I would like to test my new coil and anything else someone can come up with to figure this thing out.
I still have no spark ......none.
I'm getting 10.50 at the battery cranking the engine so that's not the problem.
I would like to test my new coil and anything else someone can come up with to figure this thing out.
I still have no spark ......none.
winterbeater
NAXJA Forum User
- Location
- Royal Oak, Michigan
Use your meter to check for voltage at the coil while cranking. I'm not so sure, though, that the 10.5 V at the battery is not a problem. What does it check when you are not cranking? It should be at least 12V. Have you tried charging the battery or jumping with cables. Generally, if it cranks good, though, it should start. For earlier models (RENIX), that is reportedly not the case.
And when you say "no spark", we are assuming that you put a spark plug into a wire and held the plug to the head or block while someone cranked the motor with the key, and this showed no sparking. Is that correct?
And when you say "no spark", we are assuming that you put a spark plug into a wire and held the plug to the head or block while someone cranked the motor with the key, and this showed no sparking. Is that correct?
The battery is putting out 12.80 at the posts. It is well charged. used a straight hex into the wire to the block, plug and anywhere else you can think of. Then my neighbor held it in his hand to the block and he is still alive!
How can i check power to the PCM ?
How can i check power to the PCM ?
old_man
NAXJA Forum User
- Location
- Loveland, Colorado
When you put the head back on, did you reconnect the ground strap from the head to the firewall?
Yes i did.
winterbeater
NAXJA Forum User
- Location
- Royal Oak, Michigan
Just checking, you did mean 0.12V, not 12V?
Not 12v just 0.12v
