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89 2.0SI boiling over only when moving..help

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Old Jun 3, 2008 | 10:21 PM
  #1  
pazookie's Avatar
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From: Riverside, CA, USA
Default 89 2.0SI boiling over only when moving..help

ok heres the story..i blew a hose (didnt realize it as my temp sensor was damaged from a previous power stearing leak) and i probably drove 10 minutes on the freeway at about 80-90 with no cooling except fresh air lol and that cause my spark plug wires to melt in the spark plug cylinders as soon as i got off the freeway and my engine was smoking from ever possible crevice, thought i toasted my engine, replaced the wires and hose and it ran fine until i blew another hose..and then another hose (guess that car just wanted all its cooling hoses replaced huh) so i replace the last one and now when i drive it itl boil over from the resevoir if i drive for more than 5 minutes and not even that if my engine is still warm...until i stop then itl cool down..and itl never boilover if its just idling..ive read alot of posts and am positive my thermostat is good, my radiator is good, and ive hard wiring both fan to 12v ignition (bypassed the thermo switch on the rediator as the fans dont run unless the car is off) no leaks but it may be the head gasket but i have no white smoke and it actually is boiling over not bubbling over from exhaust seeping through the head gasket...unless that exhaust heats up the coolant.. sorry for the long story any help would be appreciated.
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Old Jun 4, 2008 | 01:36 PM
  #2  
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Default Re: 89 2.0SI boiling over only when moving..help (pazookie)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pazookie &raquo;</TD></TR><TR><TD CLASS="quote">am positive my thermostat is good,</TD></TR></TABLE>

How did you determine that? For the time it takes to remove, test, and reinstall one, you might as well just get a new t-stat. They aren't that expensive.

Overall, I believe you toasted the head gasket. Exhaust gasses could be presurizing the cooling system in a way that prevents proper flow through the radiator.
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Old Jun 5, 2008 | 05:15 AM
  #3  
flyrod's Avatar
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From: land of the sheep, home of the hypocrite
Default Re: 89 2.0SI boiling over only when moving..help (Perfectionist)

Is the radiator cap sealing appropriately?
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