.one lane

I was on my way to the tuner on Friday and ran into a kind of weird issue (first time it has ever happened). I was on the freeway and ran into some light stop and go traffic when I noticed that my car wasn't accelerating and my rpm slowly coming down, good thing I was in the slow lane and was able to pull over on the shoulder.

The car would start but will not idle. I sat there for a good 10 minutes trying to start before I gave up and called a tow truck. About 20 minutes the car would fire up and idle correctly. I was able to make the 45-minute drive home w/o any issues.

TL;dr: Car dies and would start up again after some time has passed.

Info on the car:
1992
MS3X
Stock 1.6 ( I know... I know)
FF 610cc Injectors
DW200 fuel pump
Sequential injection
stock ignition setup
NGK range 7 spark plugs (tuner told me to gap them at .024")

Potential causes:
Bad ignitor
Bad CAS
Bad Fuel pump
Bad ground
Fuel pump relay
Main relay

What I checked:
Ignitor - Didn't know how to check this, but I assumed it was good because I was still getting a tach signal?
CAS - Did a datalog on the way home and did not see any sync errors.
Fuel pump - I haven't had a chance to open up the gas tank, but I hear it prime. (any way to log to see if the fuel pump is bad?)
Ground - Didn't see any loose ground wires.
Fuel pump relay - haven't gotten around to check this yet
The main relay - haven't gotten around to check this yet

That's all I could come up with, anyone have any other ideas? Criticism?

18psi

iTrader: (76)

often it's the cas, the fact that it's sync'd when working right doesn't rule it out

smy0003

Could be MAT sensor heatsoak/tuning. My car wanted to pull fuel on hot start because the MAT sensor wasn't tuned properly and was heatsoaking like a b*tch. It started but revs would drop and stall unless I feathered the throttle, and letting the car cool down would fix it.
Do you have an AFR log of it happening?

.one lane

I would have to go through my logs and see what the afr readings were at, but I don't think it's a heat soak issue ( I could be wrong). The car would start but will not idle and whenever I stepped on the gas the rpms wouldn't go up.

I'll post the log when I get off work. (remember this isn't tuned, so the log is all over the place)