broomeju
New member
- Joined
- Jul 4, 2016
- Location
- Nashville, TN
Hope someone has some insight or can at least feel my pain....
In the last several weeks the car started to intermittently stop running.
If we let it sit and cool down it would then restart.
After a few weeks, the car would not restart after cooling.
But if it sits for days and days, occasionally it will start up immediately.
When the car runs, it runs strong.
When it stops running it shuts down immediately.
When it won't start there are no signs of starting beyond the cranking/ rotation of the engine.
We put in a new fuel pump&filter, cleaned up the in-tank fuel pump and filter, and the main fuel pump relay & radio suppresion relay and associated wiring/connections are all good.
In all cases when the car does not run the fuel system is producing ample pressure and the engine has no spark.
The OBD error code 131 is present and no other error codes are displayed.
Things we have done or checked or observed:
1) new crank position sensor --- changing between the old one and new one makes no difference
2) coil: the coil ohms out just fine. I got another one from a junk yard that ohms out fine. as with the CPS, if we interchange the coils it makes no difference when engine is in the mood to run or not running
3) ignition control module: same thing as the CPS and coil --- We have two of them and changing between the two makes no difference running or not-running.
4) the coil has power to it when the ignition is on
5) when the engine is in the mood for running if I wiggle all the ignition related wiring at and between the components, nothing happens (was hoping to find a bad connection)
a) ignition coil
b) CPS and connectors
c) ignition module
d) EZK 116 box near brake pedal
e) ECU passenger side of car
f) fuse / relay panel (just kind of tapping and wiggling that whole assembly to see if there was in intermittent connection in there somewhere)
g) took apart the EZK 116 and looked it all over: solder joints look good and there are no signs of anything having burned up
h) send the ECU to Programa company who tested it and said it tested fine. They also said that the EZK units typically do not go bad and a visual inspection should be enough to confirm that the EZK unit itself is OK
I took the Ignition control module and heat sink off and cleaned all of that up before putting it back together.
The multi-pin grounding assemblies: one near the ignition control module and one near the ECU --- took them apart and cleaned up and reinstalled with conductive paste
removed, cleaned and reinstalled a few other grounds: straps to cam cover, one near the EZK
Cleaned all connectors on the ignition system components including on the EZK and ECU boxes and their connectors.
And right now the car is running fine but I don't trust it to drive anywhere but around our neighborhood.
Any suggestions on next steps to diagnose the root cause of my problem and fix it will be greatly appreciated!
Thank you
In the last several weeks the car started to intermittently stop running.
If we let it sit and cool down it would then restart.
After a few weeks, the car would not restart after cooling.
But if it sits for days and days, occasionally it will start up immediately.
When the car runs, it runs strong.
When it stops running it shuts down immediately.
When it won't start there are no signs of starting beyond the cranking/ rotation of the engine.
We put in a new fuel pump&filter, cleaned up the in-tank fuel pump and filter, and the main fuel pump relay & radio suppresion relay and associated wiring/connections are all good.
In all cases when the car does not run the fuel system is producing ample pressure and the engine has no spark.
The OBD error code 131 is present and no other error codes are displayed.
Things we have done or checked or observed:
1) new crank position sensor --- changing between the old one and new one makes no difference
2) coil: the coil ohms out just fine. I got another one from a junk yard that ohms out fine. as with the CPS, if we interchange the coils it makes no difference when engine is in the mood to run or not running
3) ignition control module: same thing as the CPS and coil --- We have two of them and changing between the two makes no difference running or not-running.
4) the coil has power to it when the ignition is on
5) when the engine is in the mood for running if I wiggle all the ignition related wiring at and between the components, nothing happens (was hoping to find a bad connection)
a) ignition coil
b) CPS and connectors
c) ignition module
d) EZK 116 box near brake pedal
e) ECU passenger side of car
f) fuse / relay panel (just kind of tapping and wiggling that whole assembly to see if there was in intermittent connection in there somewhere)
g) took apart the EZK 116 and looked it all over: solder joints look good and there are no signs of anything having burned up
h) send the ECU to Programa company who tested it and said it tested fine. They also said that the EZK units typically do not go bad and a visual inspection should be enough to confirm that the EZK unit itself is OK
I took the Ignition control module and heat sink off and cleaned all of that up before putting it back together.
The multi-pin grounding assemblies: one near the ignition control module and one near the ECU --- took them apart and cleaned up and reinstalled with conductive paste
removed, cleaned and reinstalled a few other grounds: straps to cam cover, one near the EZK
Cleaned all connectors on the ignition system components including on the EZK and ECU boxes and their connectors.
And right now the car is running fine but I don't trust it to drive anywhere but around our neighborhood.
Any suggestions on next steps to diagnose the root cause of my problem and fix it will be greatly appreciated!
Thank you
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