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07-14-2008, 07:13 PM
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#1 |
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Registered User
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Join Date: Apr 2008
Member ID: 87922
Pics: My Gallery
Location: Chester, VA
Age: 18
Posts: 48
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4l60e lag?
hey everyone!, Alright so this problem with my 99 Astro van happened about a month ago where i would accelerate and it would kinda stick at like 2k rpms and the speed would climb like hell but the rpms wouldn’t go any higher. Then sometimes it might stick at 2000 to around 2500 rpms and not gain any speed then kick a tiny bit and get going..The only thing ive done is put in a Vette servo, which helped sooo much!! Does it have anything to do when the van seems to slam forward when accelerating from slow speeds? the van only has 100k on it with a history or minoe tranny problems that seem to disappear after a month or soo, its weird. Like the last problem we had was when the tranny shifted soo hard it would chirp hesistate, chirp again then be on its merry way..that was gone in about a week and never happened again.. well sorry i talk alot..any ideas would be helpful thanks!
99 Chevy Astro LS almost at 100k and still runs like new...pretty stock but soon to be exhuast....got my servo and works well =]
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07-16-2008, 05:33 PM
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#2 |
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Premium Member #30
GMC RULZZ
 Status: Offline
Join Date: Mar 2005
Member ID: 25597
Pics: My Gallery
Location: San Diego
Age: 41
Posts: 6,470
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Re: 4l60e lag?
any codes stored in the computer?
fluid in good condition and at proper level(engine running and in park) last time it was serviced(fluid replaced)? what gear does it do it in? any shifting problems? any downshifting problems? does it shudder when it does this?  O2 GMC RCSB 4.8L V8 AUTO 3.73'srebuilt/beefed up 4L60E(at 43,000miles)  TRAIN HORNS(see pics in my gallery)
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07-17-2008, 04:50 AM
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#3 |
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Registered User
Status: Offline
Join Date: Apr 2008
Member ID: 87922
Pics: My Gallery
Location: Chester, VA
Age: 18
Posts: 48
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Re: 4l60e lag?
yeah fluid was changed about 4000 miles ago. its a good level. it does this in all gears. its almost like the converter is slipping a lot more before it locks up. cause is goes away by around 2500 rpm. it didnt do it this morning. and theres no codes. yet lol
99 Chevy Astro LS almost at 100k and still runs like new...pretty stock but soon to be exhuast....got my servo and works well =]
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07-17-2008, 04:57 AM
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#4 |
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Registered User
Status: Offline
Join Date: Jan 2008
Member ID: 81026
Pics: My Gallery
Location: Oakland, TN
Age: 29
Posts: 167
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Re: 4l60e lag?
My truck has a thing that limits the rpms to 2000 if the brakes are pressed. Could that be malfunctioning and limiting you to 2000 rpms. If it's a brake problem that could explain some of the jerky feelings too. Not sure, just a thought?
1999 Sierra ECSB, 5.3L, 3.42 Locking Rear, True Flow Filter, Dynomax Super Turbo
www.youtube.com/watch?v=5Y-TYK3zONU www.youtube.com/watch?v=4RT50UUQQg0&feature=user |
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07-17-2008, 05:13 AM
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#5 |
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Registered User
Status: Offline
Join Date: Nov 2006
Member ID: 58218
Pics: My Gallery
Location: Texas, Coast
Age: 48
Posts: 336
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Re: 4l60e lag?
#37AVB. Good used auxiliary valve body. Cost $29.00
Qty 12345 http://www.700raptor.com/ Mine went out or I think the spring was broken in it it's been so long and it shifted super hard for a while. Hope this helps. |
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07-17-2008, 10:21 AM
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#6 |
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Registered User
Status: Offline
Join Date: Apr 2008
Member ID: 87922
Pics: My Gallery
Location: Chester, VA
Age: 18
Posts: 48
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Re: 4l60e lag?
it could be but the brakes seem to be fine and it only does it sometimes. could be messed up idk. since im on fsc on my phone ill let you guys know cause im about to drive it home. usually when its hot i doesnt seem to do it as much.maybe the fluid is just cold and hasnt cycled.
99 Chevy Astro LS almost at 100k and still runs like new...pretty stock but soon to be exhuast....got my servo and works well =]
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