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1993 Saturn SL2

Tiny
CHRISSY36NJ
  • MEMBER
  • 1993 SATURN SL2
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 210,000 MILES
I have a 1993 Saturn SL2 4dr Sedan 210,000 miles. I replaced every sensor my idle has been erratic for the past 3 months I cleaned the throttle body, fixed all Vacuum leaks, My car idles at 1500 RPM'S and I have to hit the gas pedal to kick it down now recently I replaced the fuel pump relay it was good for 2 days but now it's doing it again. Also replaced the accelerator cable. Any suggestions. No problems with the transmission just the idle.
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Tuesday, May 31st, 2011 AT 10:26 PM

10 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I need to know the exact sensors you replaced?Also any code's?
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Tuesday, May 31st, 2011 AT 10:37 PM
Tiny
CHRISSY36NJ
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  • 6 POSTS
I replaced the IAC, TPS, EGR Valve, MAP sensor, O2 sensor, I had a code 22 for the TPS but that has been gone since I replaced the sensor.
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Tuesday, May 31st, 2011 AT 10:56 PM
Tiny
CHRISSY36NJ
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  • 6 POSTS
It wasn't the fuel relay I replaced it was the fuse I swapped them for another and it worked fine for 2 days but now the high idle is back.
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Tuesday, May 31st, 2011 AT 11:25 PM
Tiny
SATURNTECH9
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Alright if you replaced the iac and your sure there are no vacuum leak's I would replace the coolant temp sensor and inspect the connector and make sure it's not corroded. The sensor is screwed in the head below where the upper radiator goes on. There are two you want to replace the bottom one with two wires going to it there is a black wire and a yellow wire going to it. If the connector is corroded you will have to replace the connector too. When there corroded they usually turn green or blue where the connector meets the sensor. The sensors are 10 and they fail pretty often sometimes they leak coolant into the connector also thats why I want you to inspect the connector. Let me know how it runs with the new sensor.
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Tuesday, May 31st, 2011 AT 11:52 PM
Tiny
CHRISSY36NJ
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  • 6 POSTS
I will try that in the morning and let you know if it works. TY :)
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Wednesday, June 1st, 2011 AT 12:41 AM
Tiny
SATURNTECH9
  • MECHANIC
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Your welcome keep me posted.
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Wednesday, June 1st, 2011 AT 5:21 PM
Tiny
CHRISSY36NJ
  • MEMBER
  • 6 POSTS
I had to order the wires (dealer part) for the sensor they will be in on Monday. The wires cost more then the sensor. But I will let you know by Tuesday evening.
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Saturday, June 4th, 2011 AT 6:54 PM
Tiny
SATURNTECH9
  • MECHANIC
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So I take it your coolant temp sensor connector was corroded?If so your on the right track.I get my coolant temp sensor connectors from pick apart there too expensive to buy from the dealer let me know what you find and how it runs when your done.
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Sunday, June 5th, 2011 AT 2:30 AM
Tiny
CHRISSY36NJ
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I don't know if the wire is bad I just want to be prepared if it is.
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Sunday, June 5th, 2011 AT 3:14 AM
Tiny
SATURNTECH9
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All you have to do is unplug the connector and see if the connector is green or blue.
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Sunday, June 5th, 2011 AT 5:16 AM

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