Tilted Forum Project Discussion Community  

Go Back   Tilted Forum Project Discussion Community > Interests > Tilted Motors


 
 
LinkBack Thread Tools
Old 12-03-2010, 12:28 AM   #1 (permalink)
Upright
 
Location: I don't know anymore
1988 F-250 alternator problem

Well to start this off, I'm not a ford mechanic.
I just got this truck. It was cheap and I needed a truck
To move stuff around my property.
The truck runs like a new one it's a fuel injected 7.5 460
5 speed, someone has rigged a push button to the solenoid
and the truck won't crank off the key switch, but it will off
of the push button.
I'm not sure if that could have anything to do with my problem.

I bought a new battery and it cranked fine...... Once.
Then when I killed it, it wouldn't crank back up.
So I charged the batt and it cranked fine. But it's not charging
the amp gauge is showing low batt, no where near 12/14 volts
But I have been told that if the back of the alternator is magnetized
then it's charging. Which it is magnetized. And all of the connections
are clean. But it still will run a batt dead and then not crank.

I'm lost. They're are 2 wire plugs on the alt with 3 wires each
and most of them are hot when the key is on.
I searched google looking for a diagram and didn't find anything.

Another thing I tried. Which idk if it applies to fords or not but
I unhooked the hot cable from the battery and the engine died


Any help would be greatly appreciated. Any thing I could
check or try or any suggestions??

Justin
DapperDan is offline  
Old 12-03-2010, 06:23 AM   #2 (permalink)
Riding the Ocean Spray
 
BadNick's Avatar
 
Location: S.E. PA in U Sofa
This would make me look for the voltage regulator gadget that controls how the alternator charges (or not) the battery. For better or worse, that's all I can think of.
BadNick is offline  
Old 12-03-2010, 08:54 AM   #3 (permalink)
Insane
 
RogueGypsy's Avatar
 
Location: The Great NorthWet
Could be a regulator; won't allow the battery to charge. But it should take a few hours to run a full battery down.

The starter solenoid; It might be 'open' after starting and draining the battery.

I could be the ignition switch; shorted and draining the battery. The push button may have been an attempt to fix this, but their are 2 power wires to the ignition switch and the push button probably only has one.

Could be a short somewhere else.

Not much help here, I'm sure. Ford electrical systems make me want to kill small animals. I hate them.
__________________
Methods, application and intensity of application vary by the individual. All legal wavers must be signed before 'treatment' begins. Self 'Medicating' is not recommend. However, if necessary, it is best to have an 'assistant' or 'soft landing zone' nearby. Any and all legal issues resulting from improperly applied techniques should be forwarded to: Dewy, Cheatum & Howe, Intercourse, PA 17534. Attn: Anonymous.
RogueGypsy is offline  
Old 12-03-2010, 11:58 AM   #4 (permalink)
Unbelievable
 
cj2112's Avatar
 
Location: Grants Pass OR
I think the alternator has an internal voltage regulator, but I'm not sure. In any case, pull the alternator and have it bench tested. That will tell you whether or not the alternator is good. Buy a service manual, it will come in handy. No matter what the test results are on the alternator, undo the mess that you have going on w/ the ignition switch. Your issue may be a combination of things, but start w/ the obvious.
cj2112 is offline  
Old 12-03-2010, 06:32 PM   #5 (permalink)
Upright
 
Location: I don't know anymore
Well I figured the Ignition switch problem out, the solenoid wire was broke
So I fixed it and now I cranks off the key.

As for the alternator, I pulled it off and had it tested and it failed miserably,
8 volt peak was all it had.
So I've got to get another one for it.

Thanks for the replys. I do appreciate it.
DapperDan is offline  
Old 12-03-2010, 10:20 PM   #6 (permalink)
Upright
 
Location: I don't know anymore
Put an alternator and its up and running like a champ.
DapperDan is offline  
Old 12-03-2010, 10:38 PM   #7 (permalink)
Unbelievable
 
cj2112's Avatar
 
Location: Grants Pass OR
Great news! I'm glad to hear that you seem to have solved the problem.
cj2112 is offline  
Old 12-04-2010, 08:56 AM   #8 (permalink)
Riding the Ocean Spray
 
BadNick's Avatar
 
Location: S.E. PA in U Sofa
good job. logical deductions ftw

Now I wish I had an F250 since I could use one a few times a year.
BadNick is offline  
 

Tags
alternator, diagram, ford, wiring


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 03:32 AM.

Tilted Forum Project

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
© 2002-2012 Tilted Forum Project

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360