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#46
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Re: Misfire and TPS adjustment issues
Solved the misfire issue! Two bad coils (cylinders 1 and 6). Replaced them with a used set I got off Craigslist and now it runs great.
It still has a slightly high idle sometimes, very rarely though. Looking back through this thread, I didn't mention anything about a high idle until after I messed with the TPS. I'm going to swap the original TPS back in and see what happens. I'm ecstatic to finally have the car back on the road again!
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Jon 1997 SVX LSi Bordeaux Pearl 1995 SVX L AWD Polo Green - 277k miles 1986 Pontiac Fiero 3.4L Twin Dual Cam V6 |
#47
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Re: Misfire and TPS adjustment issues
Also, I solved this by running some Amsoil engine flush through the system. Must have been a sticky lifter as that cleared it right up.
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Jon 1997 SVX LSi Bordeaux Pearl 1995 SVX L AWD Polo Green - 277k miles 1986 Pontiac Fiero 3.4L Twin Dual Cam V6 |
#48
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Re: Misfire and TPS adjustment issues
Quote:
*edit* Just realized how dumb a question that was. Time to see where I can find Amsoil.
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1996 SVX LSi : Work in progress, future garage queen 2013 Acura TSX: Mistake Last edited by scoobydrvr; 10-13-2013 at 02:01 PM. |
#49
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Re: Misfire and TPS adjustment issues
Lol, yep it's on oil additive. Pour the bottle in and you're supposed to run the car at "fast idle" for 15-20 minutes. I went for a cruise around the block to help pass the time, very slowly - keeping the rpms below 2000. After a couple minutes the ticking disappeared. I then changed the oil and filter immediately afterwards. No more ticking!
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Jon 1997 SVX LSi Bordeaux Pearl 1995 SVX L AWD Polo Green - 277k miles 1986 Pontiac Fiero 3.4L Twin Dual Cam V6 |
#50
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Re: Misfire and TPS adjustment issues
Tonight I readjusted the TPS. It was at .52 volts when I started. I moved it around through it's range and then set it back at .50. Started the car and it gave me a P0120 code (TPS switch A circuit malfunction), probably from me adjusting it. I erased the code and went for a 20 minute drive. No more high idle and my 1-2 shift is noticeably softer (it's always been harsh).
I'm not yet convinced that the idle is fixed. I'll report back in a few days with an update, by then I'll have a pretty good idea if it has been resolved.
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Jon 1997 SVX LSi Bordeaux Pearl 1995 SVX L AWD Polo Green - 277k miles 1986 Pontiac Fiero 3.4L Twin Dual Cam V6 |
#51
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Re: Misfire and TPS adjustment issues
Quote:
the ticking i'm experiencing sounds just like a lifter but can only be heard when the car is pulling itself. It would be nice if this will take care of it.
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1996 SVX LSi : Work in progress, future garage queen 2013 Acura TSX: Mistake |
#52
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Re: Misfire and TPS adjustment issues
If it were a lifter tick it should be whenever the engine is running and would increase with rpms. That's how mine was.
Does your tick increase with speed? Does it increase with rpms? If it's only while driving, and doesn't do it in park or neutral, I would suspect that something else is the cause.
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Jon 1997 SVX LSi Bordeaux Pearl 1995 SVX L AWD Polo Green - 277k miles 1986 Pontiac Fiero 3.4L Twin Dual Cam V6 |
#53
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Re: Misfire and TPS adjustment issues
The ticking is only when it's pulling itself and increases with engine RPMs. I'm really not sure what to make of it; hope it isn't too serious. I wish some of the Suby masters lived nearby, I'd have them give it a listen.
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1996 SVX LSi : Work in progress, future garage queen 2013 Acura TSX: Mistake |
#54
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Re: Misfire and TPS adjustment issues
By "when it's pulling itself" you mean when you are accelerating?
Exhaust leak? A bad manifold gasket (or crack) may sound like a stuck lifter when on the move. /T |
#55
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Re: Misfire and TPS adjustment issues
I've wondered if this was the case. Is there a quick and dirty way to check for a leak like this? Seems to me that it would be hard to reproduce while sitting on jack stands.
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1996 SVX LSi : Work in progress, future garage queen 2013 Acura TSX: Mistake |
#56
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Re: Misfire and TPS adjustment issues
Quote:
I do still feel a VERY faint miss at idle. This was there before all of my troubles (and this thread) started though. It's so faint that it's hardly noticeable. I may try swapping some of the other coils out to see if it goes away. Regardless, I'm very pleased with how well the car has been running! I forgot how much I love this car!
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Jon 1997 SVX LSi Bordeaux Pearl 1995 SVX L AWD Polo Green - 277k miles 1986 Pontiac Fiero 3.4L Twin Dual Cam V6 |
#57
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Re: Misfire and TPS adjustment issues
Quote:
/T |
#58
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Re: Misfire and TPS adjustment issues
"loud pedal" is that the same as the gas pedal?
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[SIGPIC][/SIGPIC]Kenyatta The farther backward you can look, the farther forward you are likely to see. -Winston Churchill My baby: 94 lsi My fast baby: 2001 Suzuki Marauder My new baby: 2010 Subaru Outback |
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