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Irregular idle

3K views 2 replies 1 participant last post by  Birdman93 
G
#1 ·
Hello,

A month ago my bird started to idle really bad. It's very irregular after staring the engine. It idles, but it changes idle rpm constantly between +- 600 and 1500 rpm, like you are hitting the throtle a moment and letting it go. And it keeps doing that until you shift in D or R.
It doesn't always do it, sometimes it's perfect from the start, next time you start it (hot or cold) the idle problem is back. It never stalls though...

It's a '94 t-bird LX (so the 4.6 V8).

I must ad that it runs on petrol and has a propane installation to run on "cooking gas". But it has the symptoms on either one of the fuels.

Hope someone can help me???
 
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