car dies after first getting out of storage and building boost?

[Sparkynutz]

every spring when I get my car out of storage. I change the oil, hook up the battery, pull the efi fuse, crank the car a couple times, put the efi fuse back in, and start it up. I let it run a minute or two and take it around the block a couple times then out in the country a mile or two then back home. for some reason it will run completely fine when in town but as soon as I build any boost and push in the clutch to shift the tach goes down really quick and if I dont have it back in gear or give it gas quickly the engine will die. its an 88t 5spd with the turbo timer, radio, and boost controller. they were all off, but it does it with them on as well. it seems to eventually stop doing it the more I drive the car, but was wondering what the real reason that is causing this?
I searched online , on here as well as supraforums, but nothing useful has come up. im guessing its just the ecu trying to re-learn whatever it needs to run, but wanted to double check with you guys if anybody knows.
thanks,
Ryan

 

[Dunckel]

Check for boost leaks. Are you venting to atmosphere?

 

[Sparkynutz]

The other thought I had was maybe plugs are fouled with bad gas and it takes a while for the crap to burn off them? im sure new plugs wouldnt hurt, but I want to use up the gas in the tank before I gunk the new ones up with the old gas.

I'm pretty sure no boost leak, but ill check it out. I have a bosch bov with one hose going to the acordian hose on turbo, one hose going to the 3000 pipe and a small hose going to the intake manifold where my boost controller, and a couple other lines tie in.

It kills every spring when I get the car out of storage and I was only running it up to 4-6psi till the old gas is used up. it was running great last fall when I was running it up to 15psi. the only things I have done since then were park it in the garage, disconnect the battery, change the oil, pull the efi fuse and crank it over before starting.

 

[Whasian]

sounds to me like you have a boost leak somwhere that is causing your car to die out if you don't give it enough gas between gears. I suggest doing a major tune up. All filters, plugs and wires, oil, and you might even get your injectors cleaned. It usually only costs about $50 for a shop to clean them. Then while doing the tune-up, check all of your vaccum lines for cracks.

Whasian

 

[lzalusky]

I had this issue after my rebuild. It would occur when going down hill with no throttle, then getting back on it at the bottom. If it's what your describing then the tach jumps down impossibly fast and the car cuts out.

Mine was related to the Igniter not being grounded properly as far as I can tell. Since I cleaned the igniter ground this has not reocurred. The plugs probably got fouled and the ignition was not strong enough to fire due to the bad ground. Either way it sounds ignition related.

 

[Sparkynutz]

sounds to me like you have a boost leak somwhere that is causing your car to die out if you don't give it enough gas between gears. I suggest doing a major tune up. All filters, plugs and wires, oil, and you might even get your injectors cleaned. It usually only costs about $50 for a shop to clean them. Then while doing the tune-up, check all of your vaccum lines for cracks.

Whasian

but what i dont get is the car was fine the whole time in town before I built any boost. I pushed in the clutch and held it after every shift for a couple blocks of start and stop and it didnt fall below 800rpm. but as soon as i got on a streight away in the country and hit 4psi or so and shifted it dropped to 0 instantly and died. I dont understand how this could be a boost leak if there wasnt much boost for it to leak. can you explain why you think it is boost leak? every hose on the car is 4 years old and all vac lines are between 4 and 1 year old so unless something is loose I doubt there is a crack. I looked around a little and havent seen anything off or loose yet.

when you guys unhook or get a dead battery what is it that the ecu has to learn again? I dont know how to word it but if anybody has any search terms to recommend lmk. search wont allow ecu so im turning up hundreds of posts not even close or nothing at all. I'm still guessing its something to do with that but wanted to see if I could get the exact cause or more definite idea if there is anything to worry about or if it can be prevented?
if I drive the car a couple more days it will quit dying and be fine. atleast thats what it did the last two years when taken out of storage.
any more ideas?
thanks,
Ryan

I just found this-

http://www.supramania.com/forums/showthread.php?t=69823&highlight=igniter+ground&page=2
post #13 refering to efi fuse

Sure, but any thief watching you will just pop the hood and hotwire the fuse.
AND you car will run like crap for a while after you pull the fuse while it relearns.

could this be the real and only cause im seeing? what is it actually relearning?

 

[buldozr]

dude, seriously, sounds like a major boost leak, is it back firring or slight pops on decel??? Check couplers and pipes and make sure a rat isnt in the airbox or chewed a hole in the damn pipe(you will be surprised what I have found in an airbox before)

 

[Sparkynutz]

dude, seriously, sounds like a major boost leak, is it back firring or slight pops on decel??? Check couplers and pipes and make sure a rat isnt in the airbox or chewed a hole in the damn pipe(you will be surprised what I have found in an airbox before)

nope, no backfiring pops or anything it runs great other than dying easily. I found quite a bit on the subject just had to have the right search terms that were more than 3 letters. im positive I was on the right track with the whole learning fuel curve after pulling the efi fuse. if anybody else has the same problem, search for "relearn" it brought up a lot of threads with people having the same problem with car dying after pulling efi fuse.