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#1
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Surging at Idle
OK, a new problem for me. When I start up the '92, it starts fine, but surges at idle. As soon as I depress the accelerator, all is well. It seems to run fine but continues to surge at idle when I get to the stop light, etc. I think it clears up after about 10 minutes, but not sure. I'll keep an eye on that. It normally idles at about 700, and the surge takes it to about 725-750. Very rhythmic. About 1 sec per surge up and down. Ideas welcome and appeciated.
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#2
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Re: Surging at Idle
Mine does the same. I have to replace a cracked vac line in which has a temporary repair.
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99 OBP LGT Eg33 swapped. 92 pearl LSL for parts. |
#3
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Re: Surging at Idle
this happened to me and it was my O2 sensors
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1992 Pearl White LS Owned since 2009 175k Miles STi Airlift Performance air suspension 2005 WRX manual swap Rear wheel drive K-Staff front bumper Delta Speed side skirts JDM clear corners Smallcar grille Subaru XT steering wheel Subaru XT shift knob First bagged SVX in the world Worlds first SVX on air suspension. Custom made (by myself) spare tire subwoofer. |
#4
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Re: Surging at Idle
not to add more options but mine did this when i bought it and the tps was misadjusted
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#5
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Re: Surging at Idle
Sounds like an air or vacuum leak. Have you had the snorkle off of the TB lately? The rubber seal can get twisted when you reinstall it, causing an air leak.
-Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#6
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Re: Surging at Idle
TPS...had that problem on my dad's SVX.
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#7
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Re: Surging at Idle
just had a similar problem on my neighbors mazda, I unplugged the TPS and it instantly stopped but through out a CEL, I plugged it back in immediately started surging again and CEL went off. I replaced the TPS and it's good now.
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2003 Baja Sport 1994 SVX LS 1992 SVX LSi parted out |
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