I don't know how. I just seen it when.I.was put truck back together.

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1990 xlt v6 4.0 2wd automatic transmission
~got truck on 2-22-11~ new spark plugs, plug wires, air filter, did oil change, new thermostat, change transmission fluid and filter, cleaned maf, throttle body, new cylinder head 5-10-11~
[ need to fix cruise control and air conditioner]