Jump to content
The mkiv Supra Owners Club

(FIXED) Hit boost and car died.... now doesn't start...


Supra-love

Recommended Posts

Had a great day fitting carpets and new seats, cleaned her in the sun, took the mrs for a spin after.

 

Hit boost and car suddenly died and cut out. Loaded with fuel.

 

Managed to get it to a lay by. But cranks over fine sometimes goes to fire but doesn't start up.

 

Got to plug the laptop in tomorrow and chat with lee whilst doing it and try and find my issue.

 

Thought I'd post incase anyone knows anything or has had this happen?

Edited by Supra-love (see edit history)
Link to comment
Share on other sites

Guest Budz86

Possibly the crank position sensor, if you have a syvecs it won't fire the plugs until it's seen 2 full crank rotations. Data log should tell you if that's happened, but if not there is a way to check it if you have small fingers! Lol

Link to comment
Share on other sites

Possibly the crank position sensor, if you have a syvecs it won't fire the plugs until it's seen 2 full crank rotations. Data log should tell you if that's happened, but if not there is a way to check it if you have small fingers! Lol

 

Hi mate, yea running syvecs mate. Lee also mentioned the crank position sensor maybe! I'll be downloading the software for syvecs shortly, what's the little finger way?

Link to comment
Share on other sites

What does the Syvecs map do if the hose comes off the MAP sensor? I'd check that out myself.

 

 

I have no idea mate, where is that located!? I wonder if it overboosted and something is stopping it firing back up!??

 

- - - Updated - - -

 

Any luck?

 

 

Removed the plugs and coils and cleaned them, checked the nearest spark and seems to get a spark but still didn't fire after that, check cranking and shows sensors are working so getting 720 sync on the crank. Absolutely stumped

Link to comment
Share on other sites

Map sensor seems to be ready fine according to the screen laptop with syvecs plugged.

 

I'll try and pull the data log tomorrow, but I did cut the battery off as it was draining so unsure if it'll be deleted now?

 

Got a spare ignitor being sent today by a friendly member so can eliminate that tomorrow.

 

Worried my timing maybe out or maybe a fuse or resistor.

 

Might just get it off to lee tomorrow. Been very helpful via the phone but hard to get to the bottom of it through what's app.

Link to comment
Share on other sites

Well I took the log and ryan.g replayed this..

 

Luke,

 

This log does indeed show the engine cutting out and you attempting to start after.

 

All the Ecu Functions are correct with no Limp mode or protection mode activated.

 

The Crank and cam sensor are reading fine after as it gains sync fine and sends Fuel and spark signals

 

Need to get to SRD now to understand what has broke

 

Ryan

 

He also said,

 

Oil Pressure, Knock and Lambda etc is all good before the fault happens so im confident engine is fine

 

Ryan

Edited by Supra-love (see edit history)
Link to comment
Share on other sites

Post what Ryan has said if the ECU is sending Fuel and you can smell it then the only other thing you need is spark. ECU appears to be sending spark request but I would suspect Ignitor has gone and you have no or very very weak spark.

 

Personally I would take the plugs out and check them as they will be soaked in fuel. Let them dry out before putting back in and swap the ignitor :thumbs:

Link to comment
Share on other sites

Post what Ryan has said if the ECU is sending Fuel and you can smell it then the only other thing you need is spark. ECU appears to be sending spark request but I would suspect Ignitor has gone and you have no or very very weak spark.

 

Personally I would take the plugs out and check them as they will be soaked in fuel. Let them dry out before putting back in and swap the ignitor :thumbs:

 

Luckily I have a ignitor coming hopefully today been waiting all day. I removed the plugs and coils and gave them a clean. Checked the closest coil and plug, turned over and did see a spark. How strong I don't know.. As soon as this ignitor comes I'll pop it on and try... bloody hope this is my issue!!

 

Thanks mate

 

Will update as soon as I've tried the ignitor

Link to comment
Share on other sites

Luckily I have a ignitor coming hopefully today been waiting all day. I removed the plugs and coils and gave them a clean. Checked the closest coil and plug, turned over and did see a spark. How strong I don't know.. As soon as this ignitor comes I'll pop it on and try... bloody hope this is my issue!!

 

Thanks mate

 

Will update as soon as I've tried the ignitor

 

If you are seeing a spark then really it should fire. when you turned it over did the open cyl stink of fuel?

 

Whilst your waiting for the ignitor you could be taking the fuel pump out the car, clean it up so its not covered in fuel and then put a 12V supply across it to ensure the pump works. Dont run it for more than a few seconds as pumps that are designed to pump fluid don't like pumping air :)

Edited by T2 MSW (see edit history)
Link to comment
Share on other sites

If you are seeing a spark then really it should fire. when you turned it over did the open cyl stink of fuel?

 

Whilst your waiting for the ignitor you could be taking the fuel pump out the car, clean it up so its not covered in fuel and then put a 12V supply across it to ensure the pump works. Dont run it for more than a few seconds as pumps that are designed to pump fluid don't like pumping air :)

 

Yea I smelt the spark plug and stank of fuel.

 

The fuel pump I can hear priming on ignition.

 

But the spark i was getting from the plug was 1 spark every like 2-3seconds... are they supposed to spark repeatedly like every second or such?

Link to comment
Share on other sites

Yea I smelt the spark plug and stank of fuel.

 

The fuel pump I can hear priming on ignition.

 

But the spark i was getting from the plug was 1 spark every like 2-3seconds... are they supposed to spark repeatedly like every second or such?

 

OK not the pump then.

 

At crank you will get a very slow spark but I would have thought a a full cyl cycle is quicker than 3 seconds - an expert will be along to correct me on that if I'm wrong.

Back to waiting for an ignitor as all the outputs might not have gone.

Link to comment
Share on other sites

OK not the pump then.

 

At crank you will get a very slow spark but I would have thought a a full cyl cycle is quicker than 3 seconds - an expert will be along to correct me on that if I'm wrong.

Back to waiting for an ignitor as all the outputs might not have gone.

 

Fingers crossed mate. Tempted to pull my current igniter and have a look inside..

 

Thanks for your input pal

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.