Starts and dies!

Garrett4.0 · Post by **Garrett4.0** » Fri May 12, 2006 10:20 am

Ive been having a hell of a time with my truck. Ive been trying to get it started for 3 months now with no real success. It did start once but that was it. I lost a bank of injectors about 1.5 months ago and didnt even know it. I ordered new mosfets and all is well now. I got some time to play with it today and almost everytime I turn the key it will start for a second and die. I played with afterstart and cycles but cant seem to keep her going. My setup is:

4.0 SOHC
Stock EDIS
To4e turbo
MSII v3.0, v2.35 code, MT 2.25
LC-1 wideband
#30 high impedence injectors

Im obviously doing something wrong with my settings. Attached is my latest .msq file and datalog. Can anybody help me get this thing running? Thanks!

keithmac · Post by **keithmac** » Fri May 12, 2006 12:09 pm

Sounds like you`re giving it enough fuel during cranking but then it`s either leaning out or flooding when ASE kicks in. Ase runs with the VE table so if the VE entries are too low even with a lot of ase you still may not be getting enough fuel?

Hae you checked the colour of the plus, may give you a clue? Some people use carb/ brake cleaner in the inlet while cranking/starting, if it runs while spraying this in you know you`re too lean.

Try increasing the VE entries and the ASE, then if you have no joy pull the plugs, if they`re soaking wet you know you`ve gon too far. Also try giving 1/4 throttle while cranking, this would rule out throttle plate position starving the engine of air ( a could engine needs more air and fuel than a hot one).

Jedrik · Post by **Jedrik** » Fri May 12, 2006 12:47 pm

I can't relate directly to your type of engine. But you might try more ASE 40-50% and a long time since that is easy to adjust. See if it will run longer.

Also try enabling tpsAE. set threshold to 1-2.
Then see if pumping the throttle after it catches helps.

Keep trying. Suddenly it will work and you will wonder what all the fuss was about...

mops · Post by **mops** » Sun May 14, 2006 3:03 pm

can you somehow veryfi whether your crank sensor is working ok ?

I'm experiencing a problem, where durning normal engine running my crank sensor is 100% accurate, but durning cranking, (when rpm therefore signal are low) it might skip a pulse or 2, causing wierd starting behaviour...

do you have happ or vr sensor ?

Minami Kotaro · Post by **Minami Kotaro** » Sun May 14, 2006 10:20 pm

My Bug did the same thing when I went to EDIS. It would start, idle for a little bit, then die. Unplugging the SAW wire would let it start and idle fine. Turned out my module was bad, even though it tested as good on AutoZone's test thingy.

That probably isn't the case with you but you might try disconnecting the SAW wire and see if it makes any difference.