Re: [DML] End of life for idle ECU's

[Martin Gutkowski - DMUK Ltd <martin@xxxxxxxxxxxxxx>]

Don't be so quick to blame the ECU. Check resistance across pins 9 and 
11 on the plug going to the ECU. If it's open-circuit, the idlespeed 
thermistor has cacked, or the plug's developed a poor connection. This 
has the same effect

Martin

cruznmd wrote:

>I recall that recently, we've had 2 or 3 cars, who's idle would occasionally, 
>and randomly for no reason whatever jump from 700/900 to 2000 RPM's and 
>perhaps reset once the throttle linkage microswitch had been opened and 
>closed by tapping the accelerator pedal. The cause ended up being failed 
>ECU's and someone mentioned that we may be seeing the "end of life" for 
>these computers.
>
>Twice lately, I've felt a surge while driving and this morning I was at a stop 
>light and the engine jumped from 775 to 2000 RPM's until I tapped the pedal.
>  
>







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