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#1
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RPM not constant at red lights ?
Hey guys !
my car is in good shape, it's a '92 SVX with 212K km, transmission was rebuilt at 160K My question is, since I got the car (6 months), when I'm at a red light or just letting the car go forward by itself without stepping on the gas pedal, sometimes still pretty often, it seems that the rpm isn't constant, it fluctuates between let's say 300rpm and 850rpm, making the car kinda trembling at longer stops or it makes it kinda "hesitate" if I don't give some gas for example when I'm parking. This seems to be only present when I'm going forward and it's especially annoying when I leave from a red light, that kinda fluctuation makes that the car doesn't jump forward on the road smoothly, just when it starts going over 1000rpm all is pretty much ok. I get overrun by toyota echos because of this Today, for the first time ever, the car's rpm went so low it friggin stopped ! I started back and it's been ok ever since, still doing the problem in the usual variation. Could it be a clogged up injector ? I think it may be an overall problem, cause some days the car runs great, and othertimes it seems to not shift smoothly, especially when the car is cold from a start. thanks ! |
#2
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Have you cleaned the throattle body? I would clean that and change the gas filter. Is your CEL on? If so, check the codes.
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. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19 |
#3
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my first thought is iac but i'm not sure if svx's have one
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1991 xt6 eg33? 1993 gc track car |
#4
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I would try all of the following:
All in all, including the air filter, this should cost you < $40, take about half an hour, and could do WONDERS in addressing your problems. I was experiencing weird hesitation and idle in my SVX and the above did the trick. The 4 gauge alternator mod can also prove helpful in leveling out jumpy idle or other quirky electric behavior. Good luck!!
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Dan Taney 1996 Subaru SVX LSi (Red) 2019 Subaru WRX LTD |
#5
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thanks guys, I'll try this and let you know !
By the way, my local garage says they can clean up the injectors , I think they connect them to some machine..they told me I had to leave the car for 2 hours there..and that's not only tossing injector cleaner inside the tank but a deeper cleaning..is that the cleaning of the throttle body you're talking about or would it also help ? Last edited by sekler; 04-03-2007 at 02:27 PM. |
#6
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An injector cleaning is different than cleaning the throttle body. The injector cleaning will use a pressurized system to de-gunk your fuel injectors; where the throttle body cleaning will degrease the throttle body. The injector cleaning is something I would leave up to your mechanic, but the throttle body cleaning is something you can easily do yourself. You can buy a can of throttle body cleaner at any auto parts store and follow the how to guide posted on this site.
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Dan Taney 1996 Subaru SVX LSi (Red) 2019 Subaru WRX LTD |
#7
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Quote:
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#8
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300 rpms and it keeps going? I thought mine was bad when It dropped to around 600.
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#9
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Quote:
didnt you watch the CNN thing about that? they are worthless i know first hand... and i made a buch of money on them..
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- John ASE certified Master Tech W/ X1 Twin City Fleet repair, St. Paul, MN need work done? Have tools will travel
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#10
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Where?
I would like to clean the throttle body but I can't find this how-to you mentioned. Do you know what it is under or can you provide me a link?
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“Veni, Vidi, Vici.” |
#11
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Dan Taney 1996 Subaru SVX LSi (Red) 2019 Subaru WRX LTD |
#12
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I had the exact problem... i would check the vacuum lines, make sure the intake snorkel is properly attatched to the throttle body.. What fixed my weird rpm/ stall problem.. is ummm i noticed my intake manifold bolts were all loose .. just a thought.
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#13
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I read in the how to that there is a tube you can spray cleaner into to degunk the IAC. Which tube would that be? I'd like to take the whole throttle thing apart and do a better job of it, but I just don't have the time. The shop I usually take it to seems quite uninterested in cleaning anything.
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“Veni, Vidi, Vici.” |
#14
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Quote:
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“Veni, Vidi, Vici.” |
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