91SHOman

Past couple weeks this has been going on, not all the time, but enough to be a major problem, car can start, then 2-3 seconds later it dies, after a few tries she will idle, any ideas? The car has actually died twice just going down the road cruising along.

92 SC300, auto.

91SHOman

Thoughts anyone? Ignition? Fuel?

trukn1

Check your fuel filter. Sounds like to me that it may be partially clogged and needs to be replaced.

91SHOman

Had it replaced not too long ago though which is the weird thing.

LyFeWoRx

Same problem any luck?

lxsv8

sounds like it may be a vacuum leak somewhere.

mitsuguy

iTrader: (2)

how about the fuel pump overall...

ours are typically extremely reliable, but **** happens sometimes...

is the check engine light on?

vinh

iTrader: (8)

take off the piping into the throttle body and spray some brake cleaner (make sure its from an aerosol can) into the throttle body. Then try and start the car. If the car starts after/while you are doing this than you have a fuel problem.

p.hase

i have exactly the same problem: my 95' SC400, 116kmiles starts, hits 1250-1500 rpm and then dies. many times after another. starts - dies - starts dies. it does NOT hold idle.

another time it wont start at all and i can crank as long as i wish - no start.

another day it starts fine.

has anybody found a solution for this problem?

thanks, george

vinh

iTrader: (8)

i too had this same problem, it would just crank and crank and crank but no start. it turned out to be that i fried my fuel pump ecu because of my walboro fuel pump.

D1GP

your fuel pump ecu is out

relay your fuel pump. by pass the power of the fuel pump itself from the fuel pump ECU.

92SC4ME

This just randomly happened to me the other day, it has been starting right away since i've gotten it but it started, i could even press the gas and revv it to 4k rpm then it would fall hopelessly to about 250rpm and die shortly after?!?!?! another couple of trys and it worked fine?!?! would my fuel pump ecu be out as well?!?

Thanks for the help, any suggestions for the fuel pump relay would be nice.

p.hase

exactly same here! one day it dies - next day it starts fine. i also notice a strange shaking/vibration from passengers side of engine while starting cold engine. if warm its not shaking.

buddhi

Me too. Any definitive solution? 2003 SC430.

KahnBB6

iTrader: (5)

The last post in this thread before you was in 2007 and related to a 1992-2000 SC300/400. I would ask your question in the SC430 sub-forum since your vehicle has a completely different computer, electrical, diagnostic and fuel system compared to our earlier generation SC's.