hey there, we have a 1996 xj6 that has a intermittent stall/ no start sympton it happens every time you run the car its just a matter of when and where. We have recently replace the crank sensor and the MAF sensor and still no dice. The car has great fuel pressure and consistancy. Its as if the engine dies electrically (the rest of the car lights dash lights are fine, there is no codes in the ecu) any help is greatly appreciated.
phil
olde english garage, burlingame, ca, 94010

 

Cleaned out the throttle body?

 

have had several times... either fuel pump internal hose is half on.. or ecm connector corrodes fuel pump relay pin.. or ecu full of water.. also had ecm relay.. intermittent.. had one car.. stall once every 2 days.. took some time but i found it.. hope this helps

 

i will give it a try but i dont think its a throttle body issue........ thanks for the help!
phil

 

well, thanks to jag-genious tracked it down to an intermittent ecm relay, replaced it and havent had a problem since. thanks a ton hope this helps others!
phil, olde english garage, burlingame, ca,940101

 

Glad I can help

 

What's an ecm relay and where is it located?

 

I'm a new member in this forum, read this discussion and i have the same problem so could you tell me something more about the ecm relay?
Thank you

 

I believe it's one of the 3 relays behind the left headlight. I had a similar problem too and it turned out to be a bad coil resetting my ECU every few seconds after it got warmed up. Took forever to figure out.

 

In that position my car has only one relay: the black one for horn. Anyway I probably found the origin of my problem; it was for a supplementary relay installed on the fuel pump relay circuit related to an old alarm system . This relay probably blocked the fuel pump with an alarm signal, now I will replace the original connections an test if it's all ok.