GRRR DAMMIT! (alternator is still good, must be the computer?)
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GRRR DAMMIT! (alternator is still good, must be the com... - 5/15/2008 1:04:44 PM
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TOOSTUBBORN2FAIL
Posts: 175
Joined: 2/20/2008
Status: offline
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Well, new prob.
Went to get a new quartermile time this morning, long story short, one of the cables (side to side motion) was damaged and i didnt know it, and it didnt snap all the way but i have about 4 strands of steel holding it together now, it stretched and snapped a bunch of the strands when i shifted from 3 to 4, and instead i went to 2nd, revved to about 9300 rpm, scared the crap out of me cause i thought i was gonna suck a valve with that much vacuum
well, the car drives fine, no noises or loss of power or anything else, but the charging system light on the dash is on
i used a voltmeter at the battery, 12 volts when car is off, 12 when its on, 12 when its at 4000 rpm
however right as i blip the throttle the needle drops to 9 and then goes right back to 12, and right as i let off the throttle it drops to 9 then goes right back to 12
just wanting to make sure that this sounds a failed alternator, and not the regulator, i almost wish it was the regulator cause that would give the excuse to get a mpp computer
i just dont get why that would cause the alternator to fail, since my udp rotates the alternator at 2/3 the rate of the stock crank pulley, which means even at 9300 rpm with my udp, the alternator was only turning at the speed that it would be at 6200 rpm with the stock crank pulley
sorry so long, but anyone have any ideas?
< Message edited by TOOSTUBBORN2FAIL -- 5/16/2008 6:03:08 PM >
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1996 SOHC 2 DOOR BASE
PACESETTER HEADER/GLASSPACK
UNORTHODOX RACING ALTERNATOR ONLY PULLEY
FIDANZA ALUMINUM FLYWHEEL AND 4 PUCK KEVLAR CLUTCH
MOPAR STIFF MOTOR MOUNTS AND PROTHANE RACE INSERTS
VITORS POLY BUSHING BOBBLE STRUT
QUAIFE LSD
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RE: GRRR DAMMIT! - 5/15/2008 1:32:25 PM
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TOOSTUBBORN2FAIL
Posts: 175
Joined: 2/20/2008
Status: offline
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i was at 6600 rpm in third, and when the cable stretched, my hand jerked it into 2nd because it just wasnt something i expected to feel, car jumped up to 9300 before i got the clutch back in, scared the crap out of me cause ive read even the most built neon motors top out at about 8000
so what do you think, sound like the alternators out?
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1996 SOHC 2 DOOR BASE
PACESETTER HEADER/GLASSPACK
UNORTHODOX RACING ALTERNATOR ONLY PULLEY
FIDANZA ALUMINUM FLYWHEEL AND 4 PUCK KEVLAR CLUTCH
MOPAR STIFF MOTOR MOUNTS AND PROTHANE RACE INSERTS
VITORS POLY BUSHING BOBBLE STRUT
QUAIFE LSD
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RE: GRRR DAMMIT! - 5/15/2008 1:42:08 PM
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95to96transplantneon
Posts: 1894
Joined: 4/27/2007
Status: offline
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I'm not trying to be a ass but your redline is only at 6500rpm... you need ms or the mp pcm or afx pcm to go any higher... and the dohc afx race will only take a dohc to 8200... however the only way to truthfully get to 9300 rpm would be to get MS....
And yes your alternator is shot or the fuse is shot one of the two...
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Have a question about the 2.4 swap???
http://www.dodgeforum.com/m_1289520/tm.htm
MY FOR SALE POST!!!!!
http://www.dodgeforum.com/m_1279455/tm.htm
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RE: GRRR DAMMIT! - 5/15/2008 3:32:26 PM
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TOOSTUBBORN2FAIL
Posts: 175
Joined: 2/20/2008
Status: offline
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i thought it was at 6750 on a stickshift
i know i cant actually rev it to 9300 with the gas pedal, but if you downshift from 3rd when its at redline to second and let the clutch out, it will instantly jump way over the computer limited redline, because the transmission is forcing it to, computer controlled redline only works under acceleration, if the gas is off and you downshift into too low of a gear, it will force the engine higher then what the computer will let it go while accelerating
i dont have my manual with me, but where would the fuse be, i still dont see it overcharging to the point of blowing a fuse with how far under-driven the alt is, but its worth a shot before i drop money on an alternator, i planned on pulling the alt tomorrow morning and letting pep-boys test it while im at work but a fuse would save a lot of time
alt is underdriven to the point that it really barely makes enough to run the engine and the lights at idle, when i turn on the lights you can hear the fuel pump slow down considerably
_____________________________
1996 SOHC 2 DOOR BASE
PACESETTER HEADER/GLASSPACK
UNORTHODOX RACING ALTERNATOR ONLY PULLEY
FIDANZA ALUMINUM FLYWHEEL AND 4 PUCK KEVLAR CLUTCH
MOPAR STIFF MOTOR MOUNTS AND PROTHANE RACE INSERTS
VITORS POLY BUSHING BOBBLE STRUT
QUAIFE LSD
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RE: GRRR DAMMIT! - 5/16/2008 4:21:21 PM
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fsu182
Posts: 496
Joined: 9/30/2007
From: Cumberland, MD
Status: offline
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valve float anyone? lol
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99 Sport MTX 2dr
too many mods to list.
DOHC - life above 6750
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RE: GRRR DAMMIT! - 5/16/2008 5:54:27 PM
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TOOSTUBBORN2FAIL
Posts: 175
Joined: 2/20/2008
Status: offline
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haha ya thats what scared the crap out of me, runs fine tho now, just not charging
took the alternator into pepboys to have it tested before i bought a new one, they said it reads fine, took it to another one and they said the same thing
the wires are all ok, and after looking at the manual, theres nothing about a fuse anywhere in the charging system, just the regulator, which is part of the computer, which is unservicable
so, it looks like a new computer, looks like i need to call modern
anyone think of anything else it could be? according to the manual its just alternator, wires, belt and regulator, and i dont want to take it to dodge just to find out for sure if the regulator is bad
_____________________________
1996 SOHC 2 DOOR BASE
PACESETTER HEADER/GLASSPACK
UNORTHODOX RACING ALTERNATOR ONLY PULLEY
FIDANZA ALUMINUM FLYWHEEL AND 4 PUCK KEVLAR CLUTCH
MOPAR STIFF MOTOR MOUNTS AND PROTHANE RACE INSERTS
VITORS POLY BUSHING BOBBLE STRUT
QUAIFE LSD
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RE: GRRR DAMMIT! - 5/16/2008 6:44:17 PM
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TOOSTUBBORN2FAIL
Posts: 175
Joined: 2/20/2008
Status: offline
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ya, no engine codes, just the battery light
gonna pull the wire from the alt to starter and check, and if not thats the last option before a computer
_____________________________
1996 SOHC 2 DOOR BASE
PACESETTER HEADER/GLASSPACK
UNORTHODOX RACING ALTERNATOR ONLY PULLEY
FIDANZA ALUMINUM FLYWHEEL AND 4 PUCK KEVLAR CLUTCH
MOPAR STIFF MOTOR MOUNTS AND PROTHANE RACE INSERTS
VITORS POLY BUSHING BOBBLE STRUT
QUAIFE LSD
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