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mutt8588
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Atlanta, GA Aug/04/09 1999 LS User ID: 102383 Name: Josh
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11/20/2009 |
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I have a 1999 Integra LS MT with a b18b1 in it, but the ECU is a P06 (37820-P06-A00) instead of a stock ECU. I am wondering if there is a reason that the P06 would be used instead of the stock ECU. My teg got flooded 2 weeks ago and the ecu is fried, and im trying to replace it but im not sure exactly why it has a P06 instead of a stock, if there are any alterations the would require a P06 instead of a stock ECU please let me know. I am also wondering if it is going to require a VIN specific flash to work when i get a new ECU. Any information you can provide would be much appreciated, thank you in advance. (in case anyone is wondering what problems im having the car has started but dies, since the car got flooded ive had multiple occasions where the car wouldnt start or would run for a short period of time then die, but if i give it a few hours it generally starts fine until yesterday when i drove a mile to the grocery store, halfway back the car died and i had to push it home, about 4 hrs later i went outside to move the car into my parking garage and it started up immediately and i drove it about 20ft then it died when i stopped at the road to turn into the garage, since then i took out the ecu and have been looking for a replacement, i dont want to harm the engine with faulty signals from the ecu, i hope this info helps)
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SunnyJay
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CA Jul/16/04 User ID: 49634 Name: Old_Wise_One
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11/20/2009 |
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Since you have a 95 integra which is obd1. A p06 ecu is from a obd1 civic non-vtec. A P06 can be chipped to run on a b18b1. Maybe the last owner fried his ecu and replaced with the chipped P06? As long as it is chipped for a b18b1, the ecu will function the same as the original ecu. For obd1 cars, the ecu doesnt have any V.I.N information on the ecu, only obd2b 2002 plus ecus have vin information in the ecu. I would look for all the grounds that are near the bottom of the car. I would check for rust because this causes bad connections. Water causes rust which results in bad connections. Another thing you might want to test is your ignition switch. I had the issue where my car would randomly shut-off when I am driving. It was a bad ignition switch and it was 60 dollar fix.
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mutt8588
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Atlanta, GA Aug/04/09 1999 LS User ID: 102383 Name: Josh
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11/20/2009 |
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Its a 1999 integra, but thank you for the information, i will definitely check the ignition switch, i know for a fact that the ecu got wet thats why im replacing it, i can see a few black spots where it shorted out, but once i replace it if im still having issues w it i will make sure my ignition switch is working properly, and im looking through all of it for rust, i had to pull out the carpeting already.
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SunnyJay
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CA Jul/16/04 User ID: 49634 Name: Old_Wise_One
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11/20/2009 |
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sorry about that. Your car is a obd2a and the last owner converted it to obd1. Maybe he/she had the car tune thats why it has a obd1 ecu. The obd2 ecus are no tunable. Is there a jumper harness between the factory plugs to the new ecu?
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Changes To This Post: » Added Additional Post Text by SunnyJay at 9/8/2009 12:22:05 PM |
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mutt8588
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Atlanta, GA Aug/04/09 1999 LS User ID: 102383 Name: Josh
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11/20/2009 |
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it is obd2 or at least has the plug, but the plug wasnt transmitting data when i tried to have the car emission tested, there is a (im not sure what to call it) mini-harness between the ECU and the actual wiring harness in the car, its a long grey bar that the cars harness plugs into and the 3 sets of wires run into the ECU, do i need a new harness if i get a P75 or would the wiring in the car plug directly into the ECU?.....im also not worried about tuning atm im just trying to get the car running, will i need to have the car retuned with the new ecu (i assume i will) and someone told me (im not sure if this is right) that if i get a new ecu i may have to have the keys reprogrammed...is that true?
Again thank you guys for all your help
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SunnyJay
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CA Jul/16/04 User ID: 49634 Name: Old_Wise_One
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11/20/2009 |
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obd1 doesnt have a DLC connector therefor that is why it doesnt read when you went for emission testing. That is the jumper harness I was referring to. The long grey bar with 3 connectors to the ecu. You can unplug that harness once you get a p75 ecu. The plugs from the original hardness will plug into the ecu directly. Make sure the p75 you are buying is from a 96 to 99 integra. 2000 and 2001 have built immobilizers that prevents the car from starting without all the immobilizer hardware which your 99 integra lacks. There is no tuning required and no key reprogramming. Like I said your 99 doesnt have the immobilizer hardware.
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mutt8588
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Atlanta, GA Aug/04/09 1999 LS User ID: 102383 Name: Josh
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11/20/2009 |
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thank you very much youve been very helpful, im in the process fo finding a P75 now, one of the wires from the original harness has been dislodged (not sure how) from the original harness...it was directly connected to the wire on the other side of the jumper harness, what is the easiest way to fix the dislodged wire?
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SunnyJay
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CA Jul/16/04 User ID: 49634 Name: Old_Wise_One
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11/20/2009 |
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First we need to find out which wire is di-pin from the harness and then we need to find out why? Its the connector damage?
http://www.ff-squad.com/technet/wiring.obd2a.htm
visit the above link to find out which wire is di-pin.
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mutt8588
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Atlanta, GA Aug/04/09 1999 LS User ID: 102383 Name: Josh
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11/20/2009 |
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Its the IGP1 Power source, (the yellow wire on the top all the way to the right on the first harness) and the piece of metal that it was connected to is still in the connector, but the wire is free
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SunnyJay
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CA Jul/16/04 User ID: 49634 Name: Old_Wise_One
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11/20/2009 |
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De-pin the broken pin in the original harness and disgarud it. Next de-pin anywire from the jumper harness and cut the wire from the grey bar. Then solder this newly de-pin wire onto the igp1 wire. Then plug the pin into the right location on the original harness. You will be all set.
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mutt8588
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Atlanta, GA Aug/04/09 1999 LS User ID: 102383 Name: Josh
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11/20/2009 |
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ok, i got a new ecu (P75) and got it hooked up into the car, i had to go get a wiring harness cut out of another car for 2 of the ecu pin connectors because 2 of mine were trashed. Now i have gotten the car started but it is running poorly- it is idling at about 300rpms and i lose power at 2k rpms, the car jumps back and forth when in gear at2k rpms, can anyone explain why/tell me how to fix it?
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SunnyJay
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CA Jul/16/04 User ID: 49634 Name: Old_Wise_One
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11/20/2009 |
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can you take a picture of your throttle body for me? Im wondering if the last owner swapped in a obd1 throttle body. You might need to adjust the idle. Idle air control valve might be dirty and need to be cleaned. Do you have a vacuum gauge to test for vacuum leaks? Are you having any engine check lights?
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mutt8588
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Atlanta, GA Aug/04/09 1999 LS User ID: 102383 Name: Josh
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Last Here
11/20/2009 |
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thats a pic of the throttle body, the pic i took of the front of it didnt come out due to darkness (cars in a garage)
And now its not starting very well, im currently working on running through the new wiring for the harness (the pieces i had to replace) so once im done that ill be checking other things like the timing and what not
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