Post Number: 40
|Posted on Friday, 15 September, 2023 - 12:02: |
I was driving on freeway at about 100kph when I observed some erratic warning lights on my instrument cluster. Low mineral oil etc.
I then realised that I had zero acceleration as the engine just stopped.
Fortunately other motorists allowed me to coast from the right lane accross to the left and then finally come to a rolling stop on the freeway shoulder.
I cranked to no avail.
Eventually the tow truck arrived and towed it home, and so it sits until my mechanic returns to open up in early October.
I feel that this may be something simple that isnt apparent to me. I have pulled relays and checked fuses as I suspected fuel pump but really dont know how to check properly. Im not even sure that I pulled the correct relay for the pump.
Im hoping that I can get some direction here.
Robert J. Sprauer
Post Number: 839
|Posted on Friday, 15 September, 2023 - 21:16: |
A sudden failure is usually electrical. Fuel issues when they occur usually involve sputtering until the fuel is burned off. I suggest cranking and looking for a spark at the plug itself. No spark, it's the coil or module.
Post Number: 41
|Posted on Saturday, 16 September, 2023 - 07:27: |
Certainly makes sense. Ill investigate in that direction.
Post Number: 792
|Posted on Saturday, 16 September, 2023 - 07:58: |
Hi not sure of 94 is it coil per cylinder or twin distributors?
I've known the ign relay to fail.
Check for over heated fuses.
Post Number: 245
|Posted on Saturday, 16 September, 2023 - 09:16: |
It could be as simple as a loose battery connection
Post Number: 556
|Posted on Saturday, 16 September, 2023 - 20:35: |
You mention low mineral oil warning light?
Is there a safety cut out for the ignition if the
fluid level drops so you will have enough brakes
Post Number: 42
|Posted on Sunday, 17 September, 2023 - 19:31: |
Just in answer to some of the questions and a further update.
Firstly its a coil per cylinder setup and both hydraulic reservoirs are full to the top so cant understand the low mineral oil warning lights before the motor just stopped.
Today I tinkered with electrical and found that the fuel pump relay wasn't tripping during cranking. Manual actuation of its internal contacts resulted in a fuel gushing noise within the fuel pipes in the engine bay.
I then checked the fuel cutoff inertia switch and found it to be operating correctly.
I decided that since I manually pushed fuel in the lines that the motor would at least fire up during attempted start but that didnt occur. I checked for spark---there was none.
So here we are, no fuel and no spark. Is there a protection circuit that cuts both off whilst driving or how about a crank angle sensor scenario or worse, the whole engine control module.
Post Number: 793
|Posted on Monday, 18 September, 2023 - 00:04: |
Immobiliser maybe? have you ever changed the battery in the module?
Ign relay by the fuse box?
Do you have supply to the fuses at all?
Post Number: 43
|Posted on Monday, 18 September, 2023 - 11:07: |
Its fixed. After a sleepless night and a bit more research I was lead to the main engine relay that was nicely disguised as one of the others in the block.
I put a tester on it, no resistance, I pulled it apart and there is a resistor inside that just crumbled. When placed back in the car without its cover I was able to manually get the contacts to touch during cranking.
She fired right up.
I've got 2 coming by express post.
Thanks to all for your input and collective wisdom.
Post Number: 845
|Posted on Tuesday, 19 September, 2023 - 08:05: |
Well done. Happy motoring.
Post Number: 118
|Posted on Friday, 22 September, 2023 - 20:21: |
Ive found it good practice to always change out any relays in any circuit that I am having problems with as a FIRST action to trouble shoot. Have replaced many relays in 2 years solving several issues.
And have gone down many rabbit holes when I didn't!