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#1
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interesting drivetrain problem
Well, this consists of two questions.
Firstly, after the car's warmed up for a while, at about half throttle between 40-60 (that's where it's noticeable) the car shudders/hesitates HARD, until i depress the gas enough for it to downshift. What i'm noticeing in the revband is that the engine is being reluctant to downshift, and just sticks at an rpm and hesitates like crazy. Any ideas for what could cause this? Second, after the car is warmed up (again) and i have the A/C on full bore, when i come to a stop, at completely random intervals, the car shudders. sometimes lightly, sometimes noticeably. and very randomly, without rhythm at all. Again, any ideas? |
#2
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Quote:
Could be a throttle position sensor fault. Otherwise, ignition, coil/s, plug/s. P.S. Edit --- Also possible engine speed sensing problem?
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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! Last edited by Trevor; 08-06-2006 at 09:57 PM. |
#3
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My Legacy had similar issues and it turned out to be the MAF. Reset the ECU and see if it still does it.
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-Jason (8/23/07-Present) 1995 Subaru SVX LSi (197k) Polo Green (#1102) 03/95 Mods: DDM Tuning 4500k 35w Low Beam HID, 100w H3 Bulbs, Extra Ground Cables, 15 minute $12.96 mod, svxfiles designed transmission mount (), sporting a "new" tail light bar, silver BBS rims, custom power steering cooler (one that doesn't dump ATF constantly), new negative lead cable, no more third or fourth gear (1977-Present) 1977 Chevrolet Corvette (81k) Silver (12/01/2011-Present) 2005 Subaru Outback 2.5i Limited 5MT (97k) I have a bad feeling about this. -Obi Wan Kenobi |
#4
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Quote:
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#5
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And resetting the ecu involved what? Never had to screw with an ECU before, just swapped them out.
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#6
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Quote:
dcb |
#7
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it lugs AND shudders.
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#8
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I had this problem, or so it seems nearly the same. Have you had an oil leak? My coils were all saturated in oil and my car shuddered and was only drivable at around 3500rpms or higher (3rd gear highway). i replaced all coils and spark plugs and fixed the shuddering (I now idle at around 600 rpms but no shuddering)
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#9
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the car had massive engine leaks all over the place. should I have the coil packs cleaned and the spark plugs replaced?
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#10
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Honestly id take it to a trusting shop (or a buddy of yours) if you can't and just check if it's the same problem...coils aren't the cheap. i think i found them for 150$ each if i remember correctly but the shop could only find them for 250$ each. I'm definately not mechanically inclined but it sounds like teh same problem that i had. My coils were so saturated they couldn't be just cleaned, they had to be replaced.
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#11
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Quote:
"the car had massive engine leaks all over the place" would point to a blocked PCV valve. This causes the crankcase to build up pressure to cause all the leaks. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#12
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Aye, the valve was blocked. we cleaned it.
Last edited by Sr240sx; 08-08-2006 at 05:44 PM. |
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