Van overheated now it riding rough

Discussion in 'GM Powertrain' started by stokely327, Jun 27, 2010.

  1. stokely327

    stokely327 New Member

    Van overheated ... I replaced the cap and rotor button spark plugs and wires. And its still idle rough ... I used a odii scanner and it said muliple misfire .. So i took it to the shop and they said a misfire on 4-6 , the cap might be bad because i use a spider cap and they go bad .. So i replaced it and its still idle rough .... Dont overheat no more but i notice the oil pressure gauge keep dropping after the van heat up ... Help !!!!!!!!!!!!
  2. swedp

    swedp Rockstar

    have you checked if you loosing water? 4 and 6 cyl are lying against eachother on your right bank,wieving from driverseat. overheating can make a small crack or a beginning broken gasket.try a compression test to see if it shows equall readings or make a coolersystem pressuretest
  3. stokely327

    stokely327 New Member

    Yes i checked and im not losing water ... I think the radiator is bad and the water in the overflow tank is dirty as shyt .... or its cloged and the water isnt flowing properly ... I just drove the van and the tempature gauge stayed at 100 - 160 degrees but after 20 minutes it started to overheat and again the overflow water was dirty ...... No water in the oil or transmission fluid ... Im lost

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