Forum Members,

I have a '96 850 GLT, non-turbo w/20 valve engine 5254. The problem is that after starting, it runs for about 10 or seconds, then dies. If, when running (not in gear), you press the accelerator to the floor, it will maintain high speed and you can moderate the speed at between 3-4000 rpm. As soon as you lift your foot off the accelerator, however, it dies.

The codes are 1-1-2, translating to P1401 - Fault in ECM and P0115, which I don't know.

I've replaced the plugs, changed both computers, the ignition module and still no result.

I disconnected the air mass meter plug, which should allow it to idle. No dice.

There are no vacuum leaks. The segmented snorkle hose had some leaks, but was duct-taped to seal the leaks.

Nada.

What's the scoop with this car?

Hope somebody has the answer...

Here's an update from the mechanic:

The fuel pressure and flow are just fine. The idle air valve is not dirty. The computers and ignition module were changed.

However, after running 10 seconds or so, the ignition current degrades to the point where it no longer produces a spark and the engine shuts down.

Any ideas?

Don't have a NA Volvo, but my NA Saab did the same thing. It was a dirty idle air valve.

jbb
'98 S70 GLT
'96 850 Turbo

http://au.geocities.com/ozbrick850/obd2codes.html


The symptoms suggest the Idle Air Valve.

cn