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Originally Posted by bassguy31
(Post 5307620)
I think I got it. Hooked everything back up and found the starter relay to be bad and the alternator megafuse to have blown after going through the fuse check provided by Steve. It's up and running right now. If anything else crops up, I will post it. Thanks to everyone, especially Steve, who provided help and support.
Kyle Campbell 1997 F150 Ignition Switch Testing.pdf 1997 F150 Power Distribution.pdf 1997 F150 Starter Circuit.pdf 1997 F150 4.6 Engine Controls.pdf If there is for a 1998 F150 4.2 Engine would be better thanx |
Files???
Originally Posted by projectSHO89
(Post 5307930)
Good deal. Glad you got it.
Steve 1997 F150 Ignition Switch Testing.pdf 1997 F150 Power Distribution.pdf 1997 F150 Starter Circuit.pdf 1997 F150 4.6 Engine Controls.pdf If there is for a 1998 F150 4.2 Engine would be better thanx |
PCM or ECU?
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Originally Posted by projectSHO89
(Post 5307356)
Perform the following in the EXACT order specified. Provide your results in each step. For all voltage readings, connect the negative meter lead to a good chassis ground.
1. Pull fuse F20 in the engine fuse box. Measure both terminals for F20. Reinstall fuse after measurement. If 12V on either terminal, go to step 2. If zero, you have either lost primary power feed to the box via one of the 175 megafuses or there is an open circuit internally to the box 2. Pull fuse F22 in the dash fuse panel. Ign switch to RUN. Measure both terminals for F22. Reinstall fuse after measurement. If 12V on either terminal, go to 4 (Ign switch checkout). If zero, go to step 3. 3. Pull fuse F30 in the dash fuse panel. Ign switch to RUN. Check measure both terminals for F30. Reinstall fuse after measurement. If 12V on either terminal, ask for further instructions (ign switch feed B5 okay). If zero, go to step 4. 4. Reference: 1997 F150 Ignition Switch Testing.pdf Check for battery voltage at terminal B5 (Always Hot via fuse F20). If zero, F20 or its feed to the ignition switch is open. If present, continue to step 5. 5. Check for battery voltage on terminal I1 while ignition switch is in START and RUN. If zero in either, the ignition switch is open. If present, there is an open circuit between the ignition switch and the dash fuse panel or within the fuse panel. If you get stuck, ask for guidance. I'll be around off and on today. Steve |
You need a multimeter to perform the tests I gave. Go buy one, if necessary.
You're not testing fuses, you're testing the circuits that the fuses are part of. |
intermittent chugging while accelerating
Have an f150 1998 that intermittently starts chugging when the accelerator is pushed. The code P1747 came up so the dealership replace the solenoid the harness and PCM and it still does the same thing. Since then the 141 and 161 code cam up so i replace the approriate O2 sensors around the cat. Still no help and the codes still appear on the 161 code. Then the P 1747 code came back. anyone have any suggestions. It has been diagnosed for 3 weeks with no success. forgot to mention it is an 4.6 l.
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IAC..........replace....it does things just like that that will not show any codes....ask me how I know...my wifes 1997 Cougar Sport with the 4.6
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Thanks Beechkid I will try that tomorrow and post results.
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Beechkid thanks
Beechkid I want to thank you for the IAC advice. Although it wasn't exactly it, it led me to the EGR which led me to pulling off the throttlebody. When i did the ports were carboned up so bad that one side was plugged and the other about 80 percent when I cleaned everything up the truck ran like a champ with no chugging. Thanks again!
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hello. Im having some issues with my 97' f150 (5.4). I recently had a new engine that i purchassed through ford racing at the dealership installed at a local shop that was recommened by my father-inlaw. the install was great, and as far as dengine and drivetain, it runs perfect. Had them also look at my windows as to why the passenger wouldnt go down, and the driver wouldnt come back up. They got them to work, but it only lasted a week. Took it back and they found that there was a burnt wire in I beleive the ECM. Im not sure which it controls, but my windows still wont go down, and now my wipers dont work. My questions are, 1. What exactly controls the use of the windows and wipers? 2. Where is it located? 3. How much does it cost? 4. How difficult is it to repair? Was quoted at $700 to replace it. Have done some looking around and found that the cost is roughly $200 and that the difficulty level isnt that difficult. was hoping to find exact location and just fix it myself.
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PCM & ECM locations
James Law hello. Im having some issues with my 97' f150 (5.4). I recently had a new engine that i purchassed through ford racing at the dealership installed at a local shop that was recommened by my father-inlaw. the install was great, and as far as dengine and drivetain, it runs perfect. Had them also look at my windows as to why the passenger wouldnt go down, and the driver wouldnt come back up. They got them to work, but it only lasted a week. Took it back and they found that there was a burnt wire in I beleive the ECM. Im not sure which it controls, but my windows still wont go down, and now my wipers dont work. My questions are, 1. What exactly controls the use of the windows and wipers? 2. Where is it located? 3. How much does it cost? 4. How difficult is it to repair? Was quoted at $700 to replace it. Have done some looking around and found that the cost is roughly $200 and that the difficulty level isnt that difficult. was hoping to find exact location and just fix it myself.
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The PCM has nothing to do with the windows.
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so it would be the ECM? Where exactly is that located?
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What would cause the windows and the wipers to not work simultaneously?
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Originally Posted by projectSHO89
(Post 15920212)
The PCM has nothing to do with the windows.
My wipers suddenly stopped in the up position. I have changed the motor, checked the fuses, checked the relay, and changed the MFS. (Not in that order.) My highbeams and turn signals still work, just nothing from the wipers or windshield washer. 1999 F-150 XLT Lariat King Cab w/4.6 Triton, AutoTrans, 227k miles. |
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