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AFM #725
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Can someone explain this
So, past day or so I did some decent surgery on my 944. I removed the fuel rail and manifold. Rebuilt the injectors with Rennbay's kit. Painted the manifold black. Replaced AOS seals. Cleaned ICV with carb cleaner and sprayed some silicone Teflon in there. Replaced front and rear ICV hoses. Replaced AOS breather hose. Replaced oil cap o ring. So last night I put it all back together and prepared to standby for engine fire, luckily I wasn't completely retarded and no leaks at the rail or injectors!
Last night I first started it up. For like five minutes I idled and watched for leaks. There was smoke of something burning off, probably water. It went away. So I first started it up. Idling strong at 950 RPM. Then I went for a test drive. When I went back to idle it would dip down below to as low as 550 then bounce up. If sitting idling it would bounce occasionally if I revved it and let go. It would drop Low then come back up. I used jumper cables from body to engine and that didn't change anything really. So I said oh well and went to bed. This morning it started perfectly, idles perfectly and drives stronger than it did before. ????? Biggest difference I noted is when shifting into fifth gear at 35 MPH. Before it would bog down a little and wouldn't accelerate much below 40 MPH in fifth. Today driving it powered through at 35, I was quite surprised. |
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02-27-2013, 10:25 AM
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AFM #725
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My only explanation thus far is "your car was in a bad mood last night" lol
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02-27-2013, 10:27 AM
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Toofah King Bad
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Quote:
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» 1987 924S Turbo - Got Boost? « "DETERMINATION. Sometimes cars test us to make sure we're worthy. Fix it." - alfadoc |
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02-27-2013, 10:37 AM
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Oh man...What now?
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So my gremlins have relatives! Just a question, why do you shift into 5th gear at 35 mph? I'm there at about 55/60 mph. Just ask'n.
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Me and Porsche's go together like cocaine and waffles. Those don't go together. Well, peanut butter and women. Don't you mean jelly? You put jelly on women? (Ricky Bobby, Talladega Nights) 1985.5 944 Alpine white |
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02-27-2013, 10:38 AM
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AFM #725
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I'm apparently a grandma. I usually shift around 2k RPM. Going onto an on ramp I shift at like 45 MPH. Maybe 40 MPH once the engine is warm but when it's still cold I like to keep the RPM's low...
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02-27-2013, 10:41 AM
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Oh man...What now?
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Oh, God no, no one drives as carefully as I do in a 28 year old car. I don't push myself as hard any more either. Mine bogs in higher gears at lower speeds.
__________________
Me and Porsche's go together like cocaine and waffles. Those don't go together. Well, peanut butter and women. Don't you mean jelly? You put jelly on women? (Ricky Bobby, Talladega Nights) 1985.5 944 Alpine white |
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02-27-2013, 10:46 AM
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AFM #725
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I'm only just turning 20... Maybe I need to live up to my boy racer stigma better? For Rasta Monsta's sake. To be honest dude, I did go to 3.5k in third today to beat a light before it went yellow. Badass.
 Ipagolf, maybe you have some tired parts?
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02-27-2013, 10:50 AM
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Registered
Join Date: Apr 2010
Posts: 3,003
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If you read the owners manual you would know you're pretty much never supposed to operate the engine below 2000 rpm.
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02-27-2013, 11:01 AM
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AFM #725
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Guess I missed that page.
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02-27-2013, 11:02 AM
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Oh man...What now?
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When I get up at 4:30 every morning, everything about me feels like old worn parts! I just don't push the old guy (the car). I have a lot of fun with it, but I don't want to break it.
__________________
Me and Porsche's go together like cocaine and waffles. Those don't go together. Well, peanut butter and women. Don't you mean jelly? You put jelly on women? (Ricky Bobby, Talladega Nights) 1985.5 944 Alpine white |
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02-27-2013, 11:09 AM
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Registered User
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I have to shift at over 4000 rpm - I'm just addicted to the exhaust noise when you do it.
I tell my boys, some are older than Gaw that they never need to go over the speed limit, just get to it quickly! |
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02-27-2013, 11:38 AM
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Registered
Join Date: Dec 2011
Location: Space-time continuum
Posts: 1,231
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Quote:
'Loading' the engine (i.e. in gear, driving) below 2k usually does more harm to the engine than people think. It's really not good to drive an engine like that. There is no torque and the engine really struggles quite a bit. I've never understood the people who brag about having never taken their engine above 4k - that's not good. Nothing gets properly warm. Take care! Last edited by FrenchToast; 02-27-2013 at 12:06 PM.. |
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02-27-2013, 12:03 PM
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AFM #725
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Economy? What?
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02-27-2013, 12:05 PM
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Registered
Join Date: Dec 2011
Location: Space-time continuum
Posts: 1,231
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Lugging the engine under 2k where it has no torque, and therefore making it work harder than it should, probably burns more fuel than driving it above 2k where there is torque.
Take care! Last edited by FrenchToast; 02-27-2013 at 12:13 PM.. |
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02-27-2013, 12:10 PM
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AFM #725
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The gnome and elf-powered CASIS light comes on at like 2,100? In most gears
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02-27-2013, 12:42 PM
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Registered
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Did you put the restrictor back in the hose from the TB to the J-boot?
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02-27-2013, 02:17 PM
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Registered User
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Gaw, you need a heavier right shoe. The light comes on at higher revs if it thinks you want power not economy.
Another recommendation - buy a Land Rover as well, then you won't worry about the 944's economy!!!!! |
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02-27-2013, 02:18 PM
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Just thinking out loud
Join Date: Nov 2001
Location: Close by
Posts: 6,884
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Quote:
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83 944 91 FJ80 84 Ram Charger (now gone) |
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02-27-2013, 03:39 PM
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AFM #725
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I need mine to last lol!
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02-27-2013, 05:30 PM
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1988 944 2.5L 8-v NA 301k
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Quote:
My reasons for not exceeding 4,500rpm include - not wanting to throw #2 rod. - not needing to use all 168 bhp. ( M44/09 with Bursch headers & AutoThority chip ) - by 4,500 I'm already quickly passing the other cars in the lanes beside me. - a desire to run this engine another 260k. - by 4,000 I'm pretty much already exceeding most posted limits. Not flaming; I'd love a chance to wring out a 944 to redline... just not my 944. Cheers Mike
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'88 8v n/a 301k with 41k on current TBelt M454 M533 M650 M425 M418  New Feb'13 Bridgestone Grid 019.. awesome. Paid just $1,700 running & inspected. Big RUSH Fan! Lic Plate = LIFESON |
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02-27-2013, 05:47 PM
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1983 Porsche 944
John Paul Jones
Shaggy
Red
Chumpy
Weiße Scheiße
White Knight
Porsche 944
The Red Baron
