1G random car dies when hitting brake hard and when cruising

[911gdsmboostin]

Car has been perfect so far now the other day someone almost cut me off slammed the brakes everything died all lights car everything for just less then a second and turned right back on I tried making it do it again and hasn't done it now on the way home late on way home car is driving find out of nowhere dies lights acing weird like dead batt but still have full power engine just dies pull off road and won't start sit for a min or 2 starts up after a few tries and rides fine again?? I know my car pretty well but unsure what would shut everything off like that and then just kill it the second time not does I had lights and everything sometime when I low on gas being a fwd when it sloshed around it will cut out but had a 1/4 tank any suggestion appriciate and trust me I haven't had a chance to look over it just yet and please don't suggest stupid things like head gasket I believe it electrical maybe fuel as well anyone with similar problems let me know what you found I have a shop and will be doing full tune up now plugs wires fuel filter other then that I'm not sure what I'm looking for any suggestions let me know thanks

 

[bmxfelon420]

I'd recommend logging your ISC position to see if it's moving when that happens, or if it moves at all during times that the car is idling. Also follow the correct adjustment procedure for it, either by the FSM, or using link (which i'd imagine you have based on the stuff in your sig? You should make a build page.) Also check out this page for suggestions, if your idle is higher than stock then there are adjustments to the coasting fuel cut that are detailed here: http://www.ecmtuning.com/wiki/idlesurge

 

[pauleyman]

I would also check your battery terminals for signs of arcing on the hood. Is it tied down? Is the battery unusually tall?

 

[jmackisback]

My first thought would be ISC

 

[911gdsmboostin]

I'd recommend logging your ISC position to see if it's moving when that happens, or if it moves at all during times that the car is idling. Also follow the correct adjustment procedure for it, either by the FSM, or using link (which i'd imagine you have based on the stuff in your sig? You should make a build page.) Also check out this page for suggestions, if your idle is higher than stock then there are adjustments to the coasting fuel cut that are detailed here: http://www.ecmtuning.com/wiki/idlesurge

I appriciate the info and advise and yes I do have link but link and the mod list in my profile is my tsi I also have a gates fwd which is a bone stock daily and which is the one having trouble I plan on getting link for it as well but this seems to be somthing. Utting all electronics and everything at times. But I'll take ur advise and probably make a build threading both when the time comes haven't had much time or motivation to work on it being snow and cold all the time but do plan on doing alot to both

I would also check your battery terminals for signs of arcing on the hood. Is it tied down? Is the battery unusually tall?

Upon further inspection as in today when I got up I wondered why when I opened my hood last night and shut it the car started up like normal... I couldn't see anything last night on the side of the road and when it started I didn't plan on finding out till I got home I looked today and first thing I noticed the battery was loose and tried tight in the hold down bolt... well lone and behold it's stripped so bolt now won't tighted... looking closer the wing nut part of the positive terminal looked white and blackish looking at the hood well I'm sure you know what happened now.. it racked and slightly welded to the hood distorting the metal... the battery is normal sized I suppose it just came loose hitting a bump and the screw stripped and positive hit the hood shorting it out ... problem solved... now I guess I have to drill and reap the battery hold down screw hole... but guys I really appriciate the help and quick responses

 

[o0GuitarKid0o]

Go over all your fuses and relays just to be safe and add a cover on that + battery terminal

 

[pauleyman]

This is the reason I dont like the wingnuts on most after market terminals. Hood clearance is tight.

 

[911gdsmboostin]

This is the reason I dont like the wingnuts on most after market terminals. Hood clearance is tight.

I was thinking the same thing probably gonna replace with regular nuts it so close when it moved it hit the rib under the hood

 

[pimpy rider]

yeah ive had this happen too. amazing it doesnt fry anything.

 

[jmackisback]

yeah ive had this happen too. amazing it doesnt fry anything.

I have heard of an occasion when it was the prime suspect of some frying

 

[911gdsmboostin]

Well guys the saga continues I suspect it did somthing... or the plugs and wires are now in desperate need.. today after Re drilling and taping the hold down (works great now) as I went to leave work I pulled out and hit some boost like I always do and right at about 4500_5000 it just stopped and lunged forward like it ran out of gas.... thinking wtf? I drove off down the hill and tried to do it again it didn't and reved fine... half way home it studded and almost died like it did the night it shut off from the batt arcing on the hood... but it cough it self... and at another red light coke at 4500 again.... checked all connections and fuses and looked pretty damn good under hood don't see anything amiss being I have never graced her with new plugs which I been meaning to this is my next plan of action along with upgraded but used spark plugs I got off a free Lancer here on the fourms which were used in a running 11s car nonproblems mgk wires I believe also have some goodies for her that will be going in soon some that might rule out potentional problems like fuel pump fmic and other stuff.. this car does have some boost leaks but nothing crazy and has been running fine and near perfect until the batt arc... also planning on getting the batt checked.. wish me luck on the search for the curse any previous experiences to ckeck?

 

[luv2rallye]

A rare possibility is the gas tank pickup tube (or fuel pump hanger) is partially broken and swinging around with car changes in motion. When it moves out of the fuel you lose all fuel pressure. It's rare but has been reported a couple times over the years.

 

[911gdsmboostin]

A rare possibility is the gas tank pickup tube (or fuel pump hanger) is partially broken and swinging around with car changes in motion. When it moves out of the fuel you lose all fuel pressure. It's rare but has been reported a couple times over the years.

I considered that same thing when I bought a spare tank for this car (which hasn't been installed yet Due to needs boiled and sealed ) when I took the old sending unit out to the pump was rusted and the hose was ruptured also the whole piece moved side to side very easy