Lumina dies after runs awhile
#1
Lumina dies after runs awhile
Ok gang, here is a toughie, I have a 91 Lumina sedan 3.1. It starts and runs good for 15min to half hour, then spits and sputters and dies, and wont start again for a while. No codes are stored. new fuel filter good fuel pump, Mechanic has tested it on his machine but can find nothing. replaced the crank sensor just to try something, but didn;t help. tune up is only a year old, has a new ecm, just a bit stumped here, any help would be great. thanks, Mike.
#4
I would say fuel pump too.
I was stranded overnight once in my 2.8 mpfi, and at the garage next morning the car ran fine. Drove around with the mechanic and it was fine still. He wasn't ready to send me on my way, and I wasn't sure either.
So I was outside the bay and just kept giving it gas, and then it finally started sputtering.
New fuel pump.
I did throw a lean fuel condition on the O2 sensor the first time if I remember correctly.
Does it sputter in neutral or park as opposed to gear? CAn you give it more gas to try to save it from stalling? Or does it struggle and still die?
#5
It dies when driving, and once in a while when idling. I was thinking of taking my fuel pressure gauge and hooking it up and zip tying it somewhere and then chek it as soon as the car died. I think the fuel pressure should remain constant? what do ya think?
#6
(torque converter clutch or something).
Else it could be vacuum line related .. look for cracked rubber hoses....or rubber hose lines with dry rot.
Trending Topics
#8
#9
I have tried to find a bad vac line, none so far. I did do some other tests though. I hooked up my fuel pressure gauge and tested. The spec is 41-47lbs. The car is sometimes is at 41, but i got numerous 40, and one 38. Also, when running it is 35-36 and doesn't go higher.
#10
where is the TCC located on my lumina 3.1? can it cause the car to die. It seems like it dies more often when you give it a little gas, and sometimes after taking off from a stop or changing from reverse to drive or vice versa. Also while idling, it will rev and slow and rev again, just a freckle and then die.
Last edited by mikeatpriestlake; March 12th, 2014 at 11:11 PM.