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Banned
Join Date: May 2004
Location: Mountains of WNC
Posts: 2,986
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My car just died while driving
Just got back from my mechanic, new belts, plugs, plug wires & had the alternator checked
Have driven it the past couple of days with no issues until this afternoon. Here's how it went down... Driving along running 65 mph start up an incline, give it some gas & it starts bucking. Back off the gas & it returns to normal. A couple of miles down the road same thing except the tachometer stops functioning & then it dies. Any ideas? TIA! BTW: It's an 82 924 |
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08-26-2006, 02:43 PM
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Join Date: Jun 2002
Location: Wisconsin
Posts: 88
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Try a new fuel pump relay (you should keep a spare in the glove box anyhow).
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1998 Boxster with M030 Sport Suspension, 3.6 liter/325 hp, Cayman S headers and mufflers, Console delete. 2001 Boxster bought new. Driven to the last 10 Parades! Autographed. No compression at 89,000. Owned and repaired Porsches since 1974. Have driven them all the way the Dr intended... |
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08-26-2006, 07:19 PM
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Writer/Teacher
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This might sound stupid, but check to make sure that the ignition coil wire didn't come unplugged. It's happened to me.
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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08-26-2006, 10:06 PM
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Banned
Join Date: May 2004
Location: Mountains of WNC
Posts: 2,986
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Thanks for the suggestions.
First thing I checked was the ignition coil wire, I'll try the relay this afternoon. Some additional info... Was unable to restart as the engine wouldn't even turn over, like the battery was dead. So, I jumped it off using the Honda, but it only ran 2-3 mins before dying again. |
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08-27-2006, 07:18 AM
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Registered
Join Date: Jun 2002
Location: Wisconsin
Posts: 88
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Is your charging system working?
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1998 Boxster with M030 Sport Suspension, 3.6 liter/325 hp, Cayman S headers and mufflers, Console delete. 2001 Boxster bought new. Driven to the last 10 Parades! Autographed. No compression at 89,000. Owned and repaired Porsches since 1974. Have driven them all the way the Dr intended... |
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08-27-2006, 11:27 AM
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Banned
Join Date: May 2004
Location: Mountains of WNC
Posts: 2,986
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Alternator is less than a year old, checked out with 13 amps at idle & 15 amps at 3000 rpm.
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08-27-2006, 02:56 PM
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What was the voltage at the battery. Should be high 13's to very low 14's VDC.
Don't know where the amps come from.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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08-27-2006, 05:01 PM
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Banned
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Location: Mountains of WNC
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Quote:
 13 at idle 15 at 3000 rpm. |
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08-27-2006, 05:24 PM
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Check volts at your battery...if it started with a jump, the battery has to be dead. If the battery is dead, the car will not run long if it even runs at all. I would say your alternator is toast again or the wiring from the alternator to the starter solenoid and back to the battery has some problems..or possible bad grounds.
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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08-27-2006, 07:11 PM
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15 volts will kill the battery. About 14.4 is as high as it should be charging.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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08-27-2006, 07:25 PM
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Banned
Join Date: May 2004
Location: Mountains of WNC
Posts: 2,986
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Thanks for the info guys.
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08-28-2006, 03:29 PM
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Banned
Join Date: May 2004
Location: Mountains of WNC
Posts: 2,986
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Finally got a little time today to investigate further & it's official the alternator is dead. Thanks again for the help.
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09-01-2006, 04:05 PM
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Banned
Join Date: May 2004
Location: Mountains of WNC
Posts: 2,986
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New alternator installed, turns over fine but won't run for more than a few seconds.
 Bad coil? 
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09-21-2006, 01:44 PM
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Registered
Join Date: May 2004
Location: Palm Springs area, CA
Posts: 347
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Don't forget to find out why the alternator burned out already. Got a gremlin to chase!
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peter 1991 944S2 Cab, Crystal Silver Metallic "Platinum Banshee" 1987 944S Alpine White, Ice Shark Lights "Desert Ghost" 2015 Charger R/T Road & Track |
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09-21-2006, 10:58 PM
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Registered
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Check your fuel pump to make sure it's running. Sounds like the engine is running out of gas or you have a huge short circuit somewhere taking all the power which would explain the alternator failure. Does the battery go dead overnight?
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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09-22-2006, 12:14 AM
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Banned
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Location: Mountains of WNC
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Quote:
I did a bit of searching last night & I'm also going to check to see if the timing belt slipped. |
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09-22-2006, 07:09 AM
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Banned
Join Date: May 2004
Location: Mountains of WNC
Posts: 2,986
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She's running, but I'm not certain for how long or that it's because of anything I've done.
 As suggested, fuel relay replaced, fuel pump works & at least for now I have spark. Ignition switch short??? I did however find two loose fuel injectors, how big of a pain is it to replace & should I do all four at the same time? With only 13 days till the Dragon meet, I'm about to pull my hair out!!! 
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10-18-2006, 02:13 PM
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Registered
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Have you tried asking at www.924.org? Not that some here may have an answer but there is definately more traffic there for the early 924's.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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10-18-2006, 05:26 PM
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meister member
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Are the fuel injectors leaking?
I now have a charging issue which I havn't had time to look at. Grr! Speedy
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1983 944 guards red with 16" Fuchs, Host of Wisconsin area timing/ balance shaft belt tensioning party 1987 944S Purchased from Legion. Corvette LT-1 V-8 conversion with Mega Squirt II Check on progress ---> www.porschehybrids.com/gallery/speedracing944 Favorite Road = www.tailofthedragon.com 318 turns in 11 miles (11 min 20 sec best run) |
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10-18-2006, 06:11 PM
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Banned
Join Date: May 2004
Location: Mountains of WNC
Posts: 2,986
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Quote:
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10-18-2006, 06:18 PM
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2007 Porsche Cayman S
The Viridian Falcon
SOLD! -- The Purple Pig
SOLD! -- Mighty Mouse
SOLD!! -- Alpine Wolf
1983 Porsche 944 2.5 liter
