Backfiring,trans dosent down shift, speedometer doesn't work
My speedometer quit working truck ran fine.
Now truck runs good while engine is cold,
After running about 5-10 min. It starts
spitting,sputtering, coughing, and I have. To
just feather the gas pedal.
Today while driving it went dead and the
speedometer started working I put truck in
neutral and cranked it, it in good for about
15 seconds and started cutting out again,
speedometer quit s while motor running. But
will work with switch own motor off. And
after u let truck cool down it runs good
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