Randy V

At freeway speeds, engine cut out for a second or two then seemed to operate normally.

This happened twice yesterday and twice today, separated by about 15 minutes - both days after having driven for about 10 minutes to the first occurence.

Did not seem to be related to going over a bump in the road that may suggest a loose connection of some sort.

I know it's not much to go by, but any suggestions on where to start looking?

the flyin' scotsman

how old are the fuel filters/pump?

siscogts

fuel pump and filter, pump relais, also could be the crank position sensor....first parts I changed to prevent bad jokes like that .....
Francesco

jeff spahn

Check your ignition switch also. I had the same thing on my S4. Gave the ignition switch a little wiggle and car came back to life.

CardinalCar

Check the ground lines on both coils. I once had another car die in traffic, only to restart again 90 seconds later as if nothing was wrong. Then it died again, by which time I thought to check the ground on the coil. Sure enough, it was loose.

Tom. M

Might be related to your incident. First place I'd check would be the wires they replaced during the repairs, for chafing or exposed wires?

jheis

I had similar symptoms when my crank position sensor was starting to fail....

FredR

Check to ensure your battery is fastened down correctly and the clearance from the terminals to the battery cover lid to ensure that you are not getting arcing from the postive terminals to earth.

Any doubts isolate the terminals from the lid with a sheet of rubber. Cheap insurance- and when it well and truly contacts you spot weld the lid closed to the battery- ask me how I know!

I suspect this happens way more than folks think possible and best of all easy to eliminate from the list of possibilities.


Good luck with the hunt

Fred

TheoJ

I'm on the TDC sensor. Bad contact with the connector.
Another option is a loose cable between coil and distributor.
regards
Theo
1992 928GTS

Gary Knox

Randy,

Jeff suggested the 'electrical' part of the ignition switch. Shortly after buying my '94 GTS (age 12 yrs, 62K miles), there were several 'momentary' things like that with various components. Found wiggling the switch always restored activity.

Replaced the electrical component, and never an incident since. Easy first check, then on to more difficult ones if wiggling, etc. doesn't solve it.

Gary--

Alan

Well I'd say its worth changing out all the key relays, as cheap elimination: LH, EZK, & Fuel Pump.

All standard '53 relays - get them from Roger.

Alan

dfw56

I had a similar issue until yesterday.
Read the 85 engine cut out thread. Turned out to be the solder points in the EZF computer Good luck. David

GregBBRD

Interesting "list" of suggestions.

Fuel pumps and relays usually raise their ugly heads when starting.....once they are running/making contact, failure is relatively rare.

The most common thing, for what you are describing.....loose power wires at the positive battery post.

When you check to see of the battery is tight and not hitting on the cover (Fred's suggestion in post 8), make sure that the 10mm nut that tightens down the red wires to the side of the positive post is tight.

Randy V

Thanks for the suggestions guys.

Will start knocking them out.

Have not had a reoccurrence yesterday or today - yet.

Randy V

It has not reoccured since then.

Did a close look at everything suggested (except the CPS) - nothing obvious out of order.

I'm suspecting the ignition switch.