92 sho 5 speed will not accelerat

Discussion in 'Gen 1 & 2 - Engine, Exhaust, Drive Line & AC syste' started by Rex, Aug 23, 2019.

  1. Rex

    Rex New Member

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    My 92 sho 5 speed will not accelerat when i step into the gas on the hiway
     
  2. blk\blk90

    blk\blk90 SHO Member Supporting Member

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    Does it rev while sitting still? How does it idle? Any other symptoms?
     
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  3. zoomlater

    zoomlater SHO Member Supporting Member

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    clutch slipping? Does it happen when you step on the gas in 5th and it doesn't accelerate
     
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  4. Rex

    Rex New Member

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    Yes in does it in 4th and 5th
     
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  5. Rex

    Rex New Member

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    It runs great other than that does not rev when setting still it did fine on the highway yesterday and i just had a new clutch put in 3 weeks ago
     
  6. rubydist

    rubydist SHO Master Staff Member Super Moderators

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    please pull the codes and let us know what they are.
     
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  7. Rex

    Rex New Member

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    Codes are 136 oxygen sensor not switching system lean left or front 172 oxygen sensor not switching right or rear 411 idle speed system not controlling idle properly
     
  8. Rex

    Rex New Member

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    411,172,136 are the codes im getting
     
  9. rubydist

    rubydist SHO Master Staff Member Super Moderators

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    you have a big vacuum leak somewhere.
     
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  10. blk\blk90

    blk\blk90 SHO Member Supporting Member

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    What's a good way to test the vacuum system? I saw something about a smoke machine somewhere, or is there another way?
     
  11. rubydist

    rubydist SHO Master Staff Member Super Moderators

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    I typically will use a can of starting fluid. Spray a little (not a lot!) at a time in short bursts. The engine will speed up when you are spraying near the leak.
     
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  12. luigisho

    luigisho SHO Member

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    Did you loosen the intake runners when you remove the whole intake? Sometimes it doesn't seat and seal correctly if you shortcut it. Happened to me before and now I loosen and tighten them back up after seating the intake every time.
    There should be an EVTM vacuum manual page or two posted around here to look for hose connections. The big stuff up top is the intake to head seal, the intake runners leaking, and the hoses off the intake to get a start.
     
  13. Rex

    Rex New Member

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    So i changed the idle air control valve and drove it it still drove like shit so i changed one of the o2 sensors went to start the car and now all it does is click wont crank at wont jump start eather the battery is 3 weeks old
     
  14. luigisho

    luigisho SHO Member

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    Did you check voltage at the battery? do you have power other than no start? could be starter
     
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  15. Rex

    Rex New Member

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    Yeah i have power all the dash lights come on radio everything
     
  16. luigisho

    luigisho SHO Member

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    Sounds like the starter. But you really need to get a battery reading before you chase it. Since it's a manual transmission car, you try bump starting/clutch popping it from a roll?
     
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  17. zoomlater

    zoomlater SHO Member Supporting Member

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    Check to see if there is 12V at the starter when the key is turned to the on position. This will help to see if the problem exist at the ignition, the wiring, or the starter. If there is power at the starter, use an insulated screw driver to see if the solenoid is functioning by jumping the contacts. I would also double check all your grounds are clean and secure.
     
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