Intermittent engine cutting out.. ???

[James Scott]

I was passing someone yesterday.. In the middle of the pass, during acceleration, the engine bolted shortly (as if turned off briefly) .. After letting off accelerator.. the engine came back to normal.. ??

From then on.. now every few minutes.. whether going fast (with cruise on or off) or slow.. even parked idling... . The engine suddenly goes dead.. like running outta gas.. or turning key off.. ??

Sometimes when the engine dies while driving.. I can pump the accelerator.. and the engine will start up and work for a while.. Other times, it wont start back up unless I put in N and start.. SOMETIMES, it wont start unless I turn from ON to ACC .. then back ON and to start !!

HeLp!

I have had problems with the gas running out early [engine stops when stopping quickly.. or sometimes when turning left (??).. only after using 12 or 13 gallons of gas (230 miles+], since fuel pump replaced)??? This feels like that.. BUT, plenty of gas in this case (only used 60 miles on new tank)!

Also, when I tried the starter relay MOD.. I had problems with the engine stopping when I put in N or P (with the Cruise MAIN ON)! No good explanation for that.. but I took the relay out.. and now use the old OEM 30 amp circuit. Has been starting really good now (after replacing crazy battery).. So, the intermittent battery short when parked theory for unexpected dead battery is looking like an unecessary explanation .. JUST BAD BATTERY.

This situation is both aggravating .. AND dangerous. This AM I pulled out turning right into high-speed traffic.. only to have the engine mysteriously die .. putting me in a risky situation!

HeLp PlEaSe!

Thanks, Jim

[SURTEESS]

sounds like a faulty coilpack?

[James Scott]

Wouldn't that cause rough running? This just goes SMOOTHLY off.. like running outta gas.. or turning key off.. ??

[icingdeath88]

Sounds like a bad MAF. Try unplugging the MAF before you start the car up and see if it quits doing that. If so, try opening the MAF up and soldering the bad connections back together (search the forums for how to do this) or replace it with a known working one.

[James Scott]

You mean? .. Leave the MAF sensor unplugged while driving the car?? How do I evaluate the MAF.. exactly.. ??

Or do you mean .. just see if it quits at idle.. without the MAF connected?

Thanks, Jim

[Tapani]

http://www.subaru-svx.net/forum/show...t=maf+resolder

Open the pdf in the link on the last posting

Second vote for the MAF.... fixed mine

Tapani