95 Civic/h22a swap - won't start
09-25-2012, 01:21 PM
#1
95 Civic/h22a swap - won't start
Whats up guys, im losing my mind over this car. Heres the issue..
Car Spec:
1995 Civic EX Coupe
H22A Motor running a P72 ECU
So I went out to my coupe one moring and tried starting it...wouldn't start. (cranked, but did not fire) After a couple attempts of this I finally noticed my fuel pump wasn't priming or my main relay wasnt clicking at all...The only click I got out of it was the last one which signifies that the relay turns off I believe? I went to autozone and got another relay, this one worked fine for the first couple of times then it started acting up, and at times it wouldnt prime the fuel pump at all or click, ONLY until I switched the key over to ON II a few times. So thinking that this dura-**** relay is to blame I take it back to Autozone and exchange it for a different one. I hook the second new relay up to the car and what do ya know? Zero clicks, fuel pump doesnt prime and my car wont start. I checked all of my underdash fuses, those are all good, I checked my hood fuses, all of those are good. I checked the ground to my thermostat housing and cleaned that up and tightened it down still NOTHING......
Any ideas fellas? Im at a loss. Oh when the car was running good I noticed repeated clicks every 30-45 seconds while driving....It sounded like the main relay kept clicking over but Idk why...
Any input would help, im pretty fed up with my car at this point...
Car Spec:
1995 Civic EX Coupe
H22A Motor running a P72 ECU
So I went out to my coupe one moring and tried starting it...wouldn't start. (cranked, but did not fire) After a couple attempts of this I finally noticed my fuel pump wasn't priming or my main relay wasnt clicking at all...The only click I got out of it was the last one which signifies that the relay turns off I believe? I went to autozone and got another relay, this one worked fine for the first couple of times then it started acting up, and at times it wouldnt prime the fuel pump at all or click, ONLY until I switched the key over to ON II a few times. So thinking that this dura-**** relay is to blame I take it back to Autozone and exchange it for a different one. I hook the second new relay up to the car and what do ya know? Zero clicks, fuel pump doesnt prime and my car wont start. I checked all of my underdash fuses, those are all good, I checked my hood fuses, all of those are good. I checked the ground to my thermostat housing and cleaned that up and tightened it down still NOTHING......
Any ideas fellas? Im at a loss. Oh when the car was running good I noticed repeated clicks every 30-45 seconds while driving....It sounded like the main relay kept clicking over but Idk why...
Any input would help, im pretty fed up with my car at this point...
09-25-2012, 09:31 PM
#4
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Re: h22 civic problems....
Ignition switch IMO (in my opinion)
get in your car and **** with the ignition switch like, turning it veryslow,veryfast,normal then fast on the on side.
usually if you put the key to the on position and move it a **** hair back and the lights turn off then its your ignnition switch and i mean a **** hair!!!
get in your car and **** with the ignition switch like, turning it veryslow,veryfast,normal then fast on the on side.
usually if you put the key to the on position and move it a **** hair back and the lights turn off then its your ignnition switch and i mean a **** hair!!!
09-26-2012, 01:54 PM
#5
Re: h22 civic problems....
I was thinking ignition switch as well....i tested fuse # 24 underdash with a multimeter and that gave me a reading of 4.0? Im not sure if thats the correct amounts of volts? My other fuses were reading 12.73....I also tested #31 under hood and that checked out fine. I'll mess with the ignition switch. Thanks for the input bro.
09-26-2012, 01:56 PM
#6
Re: h22 civic problems....
H-T if anyone else wants to put in some input feel free...Seriously I havent been on this site in a while but from my past experience people on here were very helpful.
Trending Topics
09-26-2012, 02:55 PM
#9
Re: h22 civic problems....
I came across this thread and noticed this guy had the same exact problem. Differnce is that this guys fuse was bad. Mine are all good tested with my multimeter...Im really really stumped
https://honda-tech.com/showthread.phIp?t=2919776
https://honda-tech.com/showthread.phIp?t=2919776
Last edited by 2sLoJR; 09-26-2012 at 02:57 PM. Reason: Forgot to paste URL
09-26-2012, 08:50 PM
#11
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Re: h22 civic problems....
--- If the relay isn't going on... Of course you won't have spark or fuel :D You silly goose!
What kind of harness are you using?
Is the ecu stock or chipped?
Assuming it's 94-95 p72.
Did you check your ECU wiring?
Did you check the errr... Green plug thats not plugged into your ECU but should be in the same wire loom. Should be mounted above/behind the ecu when the ECU is mounted where it normally is.
What year/make/model did the donor main relay come from?
Have you checked for 12v at the main relay plug?
Have you checked the ground at the main relay plug?
Is there a SOLID CEL on when it doesn't want to start/before you try starting?
Your oil light showing?
Check ground on thermostat housing? g101 IIRC.
If you have the ignition on, and jiggle the key up and down and back and forth (work it around)... See if that gets any excitement out of the car.
Some diagrams i googled up real quick. Also, i don't know the fuses off the top of my head that correspond with the main relay. Maybe someone else can chime in on that, and or i just read over it and it was already said... If so... disregard that question.
What kind of harness are you using?
Is the ecu stock or chipped?
Assuming it's 94-95 p72.
Did you check your ECU wiring?
Did you check the errr... Green plug thats not plugged into your ECU but should be in the same wire loom. Should be mounted above/behind the ecu when the ECU is mounted where it normally is.
What year/make/model did the donor main relay come from?
Have you checked for 12v at the main relay plug?
Have you checked the ground at the main relay plug?
Is there a SOLID CEL on when it doesn't want to start/before you try starting?
Your oil light showing?
Check ground on thermostat housing? g101 IIRC.
If you have the ignition on, and jiggle the key up and down and back and forth (work it around)... See if that gets any excitement out of the car.
Some diagrams i googled up real quick. Also, i don't know the fuses off the top of my head that correspond with the main relay. Maybe someone else can chime in on that, and or i just read over it and it was already said... If so... disregard that question.
09-28-2012, 12:11 AM
#12
Re: h22 civic problems....
Ecu is a 97 gsr p72 I believe. Car was running fine on this ecu for like a month before all this. Harness is a single cam obd1 converted with the stock H series harness. How exactly would I test the main relay connector??
Oil light is not showing, my CEL has BEEN on due to missing my o2 sensor
Oil light is not showing, my CEL has BEEN on due to missing my o2 sensor
09-28-2012, 05:46 AM
#15
Re: h22 civic problems....
09-28-2012, 01:08 PM
#16
Re: h22 civic problems....
--- If the relay isn't going on... Of course you won't have spark or fuel :D You silly goose!
What kind of harness are you using?
Is the ecu stock or chipped?
Assuming it's 94-95 p72.
Did you check your ECU wiring?
Did you check the errr... Green plug thats not plugged into your ECU but should be in the same wire loom. Should be mounted above/behind the ecu when the ECU is mounted where it normally is.
What year/make/model did the donor main relay come from?
Have you checked for 12v at the main relay plug?
Have you checked the ground at the main relay plug?
Is there a SOLID CEL on when it doesn't want to start/before you try starting?
Your oil light showing?
Check ground on thermostat housing? g101 IIRC.
If you have the ignition on, and jiggle the key up and down and back and forth (work it around)... See if that gets any excitement out of the car.
Some diagrams i googled up real quick. Also, i don't know the fuses off the top of my head that correspond with the main relay. Maybe someone else can chime in on that, and or i just read over it and it was already said... If so... disregard that question.
What kind of harness are you using?
Is the ecu stock or chipped?
Assuming it's 94-95 p72.
Did you check your ECU wiring?
Did you check the errr... Green plug thats not plugged into your ECU but should be in the same wire loom. Should be mounted above/behind the ecu when the ECU is mounted where it normally is.
What year/make/model did the donor main relay come from?
Have you checked for 12v at the main relay plug?
Have you checked the ground at the main relay plug?
Is there a SOLID CEL on when it doesn't want to start/before you try starting?
Your oil light showing?
Check ground on thermostat housing? g101 IIRC.
If you have the ignition on, and jiggle the key up and down and back and forth (work it around)... See if that gets any excitement out of the car.
Some diagrams i googled up real quick. Also, i don't know the fuses off the top of my head that correspond with the main relay. Maybe someone else can chime in on that, and or i just read over it and it was already said... If so... disregard that question.
Harness im using is a SOHC vtec obd1 harness converted with 97 H22a harness.
Stock p72 ecu, not sure what year its from.
ECU wiring looks good, I'll double check tommorow though.
I'll check that green plug tommorow. I thought one of those goes to my heater core?
Donor main relay came from a 2000 Integra GSR
Again, im not sure how to check for 12v at the main relay plug. I have a multimeter so if you guys wanna explain to me how I would go about checking the entire connector im all ears.
Ground on the main relay plug, its the black wire I believe? Wire looks good, should I test that wire for power?
YES. My CEL has always been on sense I don't have an o2 sensor yet. Im still waiting on it from OBX.
Oil light is not on.
I cleaned and tightened that ground on my thermostat like 3 times. Still nuthing.
09-28-2012, 01:14 PM
#17
Re: h22 civic problems....
09-28-2012, 05:02 PM
#20
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Re: h22 civic problems....
ear
Harness im using is a SOHC vtec obd1 harness converted with 97 H22a harness. Well an obd1 ex harness, you should only have to alter injectors (if you are using a resistor box) idk the specific set up of motor, and alternator if you kept the obd2 alternator. Also the dizzy. Like i said though. Idk you specific set up.
Stock p72 ecu, not sure what year its from.if you arent using a step down. its going to be a obd1 p72. You should be throwing quite a few codes too using that ecu without it being chipped.
ECU wiring looks good, I'll double check tommorow though.Please jiggle the key and play with it in the ignition and see if you can here the pump prime and or relay clicking. Also if that doesn't do anything... Keep the key on IGNITION II, and then sit in the passengers seat and play with the ecu wires... dont pull on them. but bend the harness back and forth to see if you can get anything to prime or click. Do the same with that green plug harness.
I'll check that green plug tommorow. I thought one of those goes to my heater core? This is the green plug i am talking about.
Donor main relay came from a 2000 Integra GSR SOME main relays are obd specific. IIRC might only be the obd0 that is different. Obd1-2a-2b i believe are interchangeable.
Again, im not sure how to check for 12v at the main relay plug. I have a multimeter so if you guys wanna explain to me how I would go about checking the entire connector im all ears. Same thing as below... Put probe into the spade connector, and touch to a known good ground. IE. The ground below (if you test it first and it test fine), or the negative battery terminal.
Ground on the main relay plug, its the black wire I believe? Wire looks good, should I test that wire for power? Ground is listed above in the diagram. Ground wire... WONT have power :D You can use a test light on it. Put a paper clip in the spade connector, then put the clamp on. Then touch the test light to a known good 12v source. IE. Battery.
YES. My CEL has always been on sense I don't have an o2 sensor yet. Im still waiting on it from OBX. I asked if the CEL was on because, if there is a problem with that green plug im talking about. The CEL will be lit up always, the oil light won't work at all, and the main relay wont trigger.
Oil light is not on. I meant by this, does the light go on... Before you start it. Like it should normally. Goes on when in IGNITION II, then start and goes off once it gets oil pressure.
I cleaned and tightened that ground on my thermostat like 3 times. Still nuthing.
Harness im using is a SOHC vtec obd1 harness converted with 97 H22a harness. Well an obd1 ex harness, you should only have to alter injectors (if you are using a resistor box) idk the specific set up of motor, and alternator if you kept the obd2 alternator. Also the dizzy. Like i said though. Idk you specific set up.
Stock p72 ecu, not sure what year its from.if you arent using a step down. its going to be a obd1 p72. You should be throwing quite a few codes too using that ecu without it being chipped.
ECU wiring looks good, I'll double check tommorow though.Please jiggle the key and play with it in the ignition and see if you can here the pump prime and or relay clicking. Also if that doesn't do anything... Keep the key on IGNITION II, and then sit in the passengers seat and play with the ecu wires... dont pull on them. but bend the harness back and forth to see if you can get anything to prime or click. Do the same with that green plug harness.
I'll check that green plug tommorow. I thought one of those goes to my heater core? This is the green plug i am talking about.
Donor main relay came from a 2000 Integra GSR SOME main relays are obd specific. IIRC might only be the obd0 that is different. Obd1-2a-2b i believe are interchangeable.
Again, im not sure how to check for 12v at the main relay plug. I have a multimeter so if you guys wanna explain to me how I would go about checking the entire connector im all ears. Same thing as below... Put probe into the spade connector, and touch to a known good ground. IE. The ground below (if you test it first and it test fine), or the negative battery terminal.
Ground on the main relay plug, its the black wire I believe? Wire looks good, should I test that wire for power? Ground is listed above in the diagram. Ground wire... WONT have power :D You can use a test light on it. Put a paper clip in the spade connector, then put the clamp on. Then touch the test light to a known good 12v source. IE. Battery.
YES. My CEL has always been on sense I don't have an o2 sensor yet. Im still waiting on it from OBX. I asked if the CEL was on because, if there is a problem with that green plug im talking about. The CEL will be lit up always, the oil light won't work at all, and the main relay wont trigger.
Oil light is not on. I meant by this, does the light go on... Before you start it. Like it should normally. Goes on when in IGNITION II, then start and goes off once it gets oil pressure.
I cleaned and tightened that ground on my thermostat like 3 times. Still nuthing.
09-29-2012, 07:19 AM
#21
Re: h22 civic problems....
Again, click the Test Fuses in my signature. What voltage do you read on each of the two test tabs of installed fuse 24? You are only posting one voltage reading.
Last edited by Former User; 10-02-2012 at 06:22 AM.
10-01-2012, 07:48 AM
#22
Re: 95 Civic/h22a swap - won't start
I have not been able to work on my car at all for the past few days due to work. (Been riding the bus everywhere) My car is currently in my buddys driveway as well. :/
Im gunna have some time today to go run some more test on it. @RonJ, I checked both tabs on fuse #24 and both tabs got a reading of .5 voltage. I replaced the fuse and tested again getting another reading of .5 on both tabs. This is what your asking correct?
Im gunna have some time today to go run some more test on it. @RonJ, I checked both tabs on fuse #24 and both tabs got a reading of .5 voltage. I replaced the fuse and tested again getting another reading of .5 on both tabs. This is what your asking correct?
10-01-2012, 07:53 AM
#23
Re: 95 Civic/h22a swap - won't start
@MfoeHrkolb I'll go through and try what your saying and run a coupled more detailed test. I'll get those results back to you guys later today. I really appreciate the help guys.
10-01-2012, 08:04 AM
#24
Re: h22 civic problems....
If so, one possibility is a bad dash fuse box. Do fuses 15 and 25 have battery voltage, unlike fuse 24?
10-01-2012, 09:29 AM
#25
Re: 95 Civic/h22a swap - won't start
Yes, tested with key in ON(II). I tested other fuses as well and everything else was getting voltage I beilieve. BUT I will test 15 and 25 and double check today and see if they have voltage. Bad dash fuse box? Is that common?
Hmmm, I should note that my car sat for nearly 3 years.
Hmmm, I should note that my car sat for nearly 3 years.
