Question about 1993 Saturn SC2

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1993 Saturn SC 2 starts but wont stay running

Changed fuel filter, tps, and iac valve. What are the chance of this being the fuel pressure regulator

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  • pgaudet1 Jan 17, 2009

    Thanks,

    Found the problem. It was the ingnition module under the coils.

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Engine coolant temp sensor, If you pull it you will be able to see if it is cracked.. I don't know why but the original sensors they designed the ceramic tips crack around the tip of the head.. It will make the car nearly impossible to start smoke when cranking the engine, and idle really rough racey infact. 15 dollars or so let me know if that worked for you

Posted on Jan 16, 2009

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Posted on Jan 02, 2017

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What is the tps and where is the fuel pressure regulator


TPS throttle positioning sensor......Located on the throttle body and looks like this pic attached Top pic is TPS and Other is the regulator



Fuel pressure reg 4.3L Engines
  1. Properly relieve the fuel system pressure.
  2. Disconnect the negative battery cable.
  3. Remove the upper intake manifold.
  4. Remove the fuel pressure regulator retainer clip.
  5. Twist and pull the fuel pressure regulator in order to remove the regulator from the housing using a shop towel to catch any spilled fuel.
  6. Remove and discard the regulator seal O-ring.
  7. Remove and discard the regulator filter.
  8. Remove and discard the regulator seal O-ring.
  9. Remove and discard the backup ring.
  10. b2da892.jpg

    984e3dd.jpg


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If the cat is red then it is probably plugged if the motor can't exhale it wont run at high rpm

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