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  1. Across281

    1999 7.4l lost oil pressure

    Got stuck, redlined 10x or so getting out. Oil pressure dropped to about 20 psi drove home as to about 1 mile from the house psi =0 , held rpm about 1k at stop light etc. Died in my yard. Cranked next morning was fine till about 150* temp, dropped to 6-7 psi cut it off. Changed oil & filter...
  2. Across281

    99 vortec 7.4l oil pressure sending unit, oil pressure switch

    Looking for location from what I have seen people say it is by the distributor on drivers side or by the oil filter housing. I have not been able to spot it. Does intake manifold have to be removed to change this?
  3. Across281

    Black bear tune & now Coolant leak

    0_Screenshot_20200122-201133_Gallery by Across281 posted Jan 22, 2020 at 8:18 PM Letting truck warm up and then doing a pull out on the hwy now it appears I have a coolant leak. It does not look to be leaking into oil or leaking from upper intake gasket. Could it be lower intake gasket...
  4. Across281

    1999 nv4500 reverse light switch

    I found reverse light switch on drivers side on the top about midway and there is no pigtail or connector. No problem I will get a new one but I do not know where the pigtail connects to or where it should plug into if I can find one from a junkyard
  5. Across281

    99 k3500 ac compressor will not engage

    1999 k3500 4x4 7.4l 5 spd AC just stopped working after shop removing cats/welding in pipe - still have o2s - no tune yet EGR is not plugged in either if that may have anything to do with PCM not turning ac on... low/high pressures almost equal say 70 low, 79 high Jumped low pressure switch -...
  6. Across281

    1999 5 spd 7.4 dies at idle

    I have been chasing this problem for about a year truck dies in neutral only at stop light after idling for 20-30s. I have replaced egr, cap/rotor, coil & wire. I do not believe it has any bad fuses. I do believe neutral switch on trans is out as my reverse lights do not come on (new bulbs). O2...

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