ollie-99

I run my car most days its fine; but others the car will run then stall @ a light; and if i try to restart it sounds as if only half the cylinders are running. I try to start it about 4/5 times and the battery dies
I did have a bit of back fire earlier in the nite as well
Any ideas?

disco192

could be a coil problem.. maybe some issues with grounding or alternator connection.

Just a few thoughts.

-Stu

ollie-99

it has happend before and it runs fine for a few days then acts all dinked up
i have an issue w/ my battery terminals too; the inside of them are stripped.. is it possible its the battery?

disco192

yea, id say get a new battery (could get it cheap with warranty) or get the terminals fixed. Definately sounds like electrical problem.

mzgp5x

I had an opti go bad. Initially, it ran real ragged. Next time I started it, it was OK. When I tried to rev 4k+, the engine missed badly. Then it stoped and I was stranded. Turned ot the Opti exploded internally. Loose pieces all over. I replaced it and the car started. I don't think gm design the opti for a MSD6a and a 8202 blaser coil. I want to eliminate it totally, but Delteq still uses the Opti portion of the unit. Hey gm... nice mounting behind the water pump.
_______________
97 LT1 ati D1-blower w/ Spearco/ 72#/hr MSD injectors with Acceleronics.

ollie-99

ok replaced the battery and its backfiring still
and does have trouble starting...
i tried to unplug the battery and try again and it had the same issues
BUT
if i kept it revved above 2500 it didnt stall on me
any idea?
TPS?

93formula

could it be a bad iac? maybe thats why it dies at a light.

try disconnecting the maf and run it in speed density, then unplug the iac and see if it has trouble starting or idling. mine was acting sorta like yours when starting. unplugged the iac and the starting issues went away. did what yours did, start it up it would die, unless you gave it gas over 2500 untill it warmed up a a bit.

could also be bad wires, plugs, coil or opti. whens the last time you had a tune up?

ollie-99

the thing is
right now its running fine
but after a while of drivin it will start doing this and continue until everything cools down?
i hope this makes sense

93formula

well, whens the last time you gave it a tune up???

did you try the speed density suggestion? oh wait you have a hot cam, i dunno how that will work.

what temp does it reach when it acts up?

also wheres my rims and tires

ollie-99

temp is the same all the time
ill drop em off tomorrow if u like?

MattysTA

probably a burnt wire i had that problem and it turns out one of my wires was burnt. but im going to change them all soon. also my battery terminals loosened up from all the hard launches(my battery was floppin around) try those first

9T4Z28

Hey i had my opti replaced and i had the same problem it stalled out at idle and lights, i found out it was my fuel pressure vaccum line, check for any vaccum leaks, maybe thats the problem
just my 2 cents