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97 honda prelude loses fire at plug

 
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Old 08-03-2010, 05:20 PM
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97 honda prelude loses fire at plug

I have been working on my nephews 97 prelude and it runs for a little and then shuts off. If you check for fire at the plug you have nothing. We have replaced the disributer, coil and some other things that people have suggested. Has anyone had this issue and had it resolved
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Old 08-03-2010, 05:59 PM
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Re: 97 honda prelude loses fire at plug

ignition module . the one and only time my 93 left me was because of a bad module if you let it sit and cool off for a few hours it would run fine for 15 or 20 mins then start breaking up under load .
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Old 08-03-2010, 06:03 PM
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Re: 97 honda prelude loses fire at plug

We put in an ignition module in and it did not fix it. Whe we put in the new distributer it had a new module in it also. Thanks any help is great
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Old 08-03-2010, 06:24 PM
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Re: 97 honda prelude loses fire at plug

your going to have to start running down where your losing power or signal from . dose it have any codes in it ? could possibly be a crank sensor the symtoms you describe also fit a crank sensor very well ( ive seen many cars do this as soon as they warm up just stop running because of a crank sensor ) . without having the car to look at in person kinda hard to say . i can get you an ecu pinout but you need a meter and a little time to run down the problem . all intermitant problems are a pita to run down . let me know if you need a pinout of the ecu
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Old 08-03-2010, 09:01 PM
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Re: 97 honda prelude loses fire at plug

We worked on it tonight and we have power going into the distribiter but not out. We have installed two differant distributers the first used then the one that is in now is new from Honda. I down loaded some manuals tonight and we are going to try test where they are telling. Anything that you can send that you think could help I would appreciate. Thanks for your help
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Old 08-04-2010, 09:47 PM
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Re: 97 honda prelude loses fire at plug

just because you have power going into the distributor dosnt mean you have the signal to fire the coil . let me dig you up a pinout for the ecu coil and the distributor . test for the coil and module sorry no pics but it wouldnt let me copy and paste pics from the online repair manual lol




Ignition Control Module (ICM) Input Test

NOTE:


See fuel and emissions when the malfunction indicator lamp (MIL) comes on.
Perform an input test for the ignition control module (ICM) after finishing the fundamental tests for the ignition system and the fuel and emissions systems.
The tachometer should operate normally if the ICM is OK.
Remove the distributor ignition (DI) cap, the distributor ignition (DI) rotor, and the leak cover.







Disconnect the wires from the ICM.
Turn the ignition switch ON (II). Check for voltage between the BLK/YEL wire and body ground. There should be battery voltage.
If there is no battery voltage, check the BLK/YEL wire between the ignition switch and the ICM.
If there is battery voltage, go to step 4.
Turn the ignition switch ON (II). Check for voltage between the GRN wire and body ground. There should be battery voltage.
If there is no battery voltage, check:
ignition coil.
GRN wire between the ICM and ignition coil.
If there is battery voltage, go to step 5.
Disconnect the A (32P) connector from the ECM, and check for continuity on the YEL/GRN wire between the ICM and ECM. There should be continuity.
Check for continuity on the YEL/GRN wire to body ground. There should be no continuity.
Reconnect the ECM A (32P) connector.
Disconnect the 16P connector from the gauge assembly, and check for continuity on the BLU wire between the ICM and tachometer. There should be continuity.
Check for continuity on the BLU wire to body ground. There should be no continuity.
If all the tests are normal, reconnect the 16P connector to the gauge, and replace the ICM.
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Old 09-04-2010, 06:45 AM
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Re: 97 honda prelude loses fire at plug

We finally found the problem the transmission ground wire on the housing was loose. Thanks for your help
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Old 09-04-2010, 08:42 PM
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Re: 97 honda prelude loses fire at plug

ah the ol' ground wire causing electrical havoc........... glad you figured it out!
tell your nephew to take some pictures of his car and join our site!
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