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#1
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W126 warm-up phase
Throttle response is great when the engine is completely cold, or fully warmed up. But theres a brief period of several minutes in between when there is a noticable hesitation off idle.
I'm guessing this is the warmup regulator going lean too quickly. System and control pressures are good, though I had to knock the pin down a little to get the cold control pressure where its supposed to be. Where else should I be looking, or should I just leave well enough alone?
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1985 380SE Blue/Blue - 230,000 miles 2012 Subaru Forester 5-speed 2005 Toyota Sienna 2004 Chrysler Sebring convertible 1999 Toyota Tacoma |
#2
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Quote:
looks like you answered yer own question. most likelly the warm up regulator. shouldn't need to "adjust" it. this is a sign that its bad. just make sure that yer fuel pressure and flow is good. george |
#3
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Would increasing the system pressure change anything, as long as its still within specs?
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1985 380SE Blue/Blue - 230,000 miles 2012 Subaru Forester 5-speed 2005 Toyota Sienna 2004 Chrysler Sebring convertible 1999 Toyota Tacoma |
#4
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no, don't think so. its hard to diagnose over the net
but what messes you up is the control pressure. also check that yer o2 is working properly. george |
#5
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O2 is fine (new). The problem is during the period before closed loop. What other inputs control the warmup regulator, or is it completely stand-alone? I'd rather chase down a bad sensor than replace the WU regulator, which I understand is expensive.
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1985 380SE Blue/Blue - 230,000 miles 2012 Subaru Forester 5-speed 2005 Toyota Sienna 2004 Chrysler Sebring convertible 1999 Toyota Tacoma |
#6
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Sure is good to find george on here. can always count on good advice from him. pauljc
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#7
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Quote:
if yer fuel pressures are fine then i think yer stuck with the warm up regulator. you do have other options like eng vac leaks that need to be found with a smoke machine. best, george |
#8
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What will happen if I uninstalled the O2 completely completly on a 560SEL 1989 car?
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Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D 380SE 1984 <------- Totaled by flipping accident 300SE 1988 <------- Sold Volvo S70 2000 <---- 4 family Opel Omega 2002 <-- 4 family 560SEC 1989 <------ Sold 560SEL 1990 <------ Sold 560SEL 1991 <------ 4 my mother 560SEL 1989 <------ Sold 600SEL 1992 <------ Current http://search.ebay.com/_W0QQsassZkhazenzcc |
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