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h23 vtec cranks but dont run

 
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Old 05-08-2010, 11:07 AM
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h23 vtec cranks but dont run

Had a dumb ass that called himself a mech F up my car. I took it way from him and i am doing the work now and we got it to crank but it will not rev or drive the only code im getting is (crankshaft position sensor a circuit malfunction) Can anyone please help me or tell me what to do.
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Old 05-08-2010, 11:08 AM
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Re: h23 vtec cranks but dont run

its a obd2 2000 prelude its in and the oil pump and crankshaft sensor has been changed
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Old 05-08-2010, 11:55 AM
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Re: h23 vtec cranks but dont run

sounds like the CKP and TDC sensors are hooked up wrong.
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Old 05-08-2010, 01:56 PM
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Re: h23 vtec cranks but dont run

just put a new one on it other had a big wad of dirt and grease on it. tell u n sec what the score is
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Old 05-08-2010, 02:58 PM
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Re: h23 vtec cranks but dont run

belt keeps running off to the outside, we have took it apart and put it back together 3 times and following alldata guide and it still wants to walk
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Old 05-08-2010, 09:19 PM
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Re: h23 vtec cranks but dont run

slowly going crazy here, now got it running belt stays on. No error codes but still will not rev or drive
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Old 05-08-2010, 09:39 PM
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Re: h23 vtec cranks but dont run

What ECU are you using?
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Old 05-08-2010, 09:40 PM
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Re: h23 vtec cranks but dont run

the factory obd2 for the 200 prelude
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Old 05-08-2010, 09:42 PM
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Re: h23 vtec cranks but dont run

it purrs like a kitten until you touch the gas
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Old 05-08-2010, 09:50 PM
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Re: h23 vtec cranks but dont run

Umm.... What car did the H23 come from?
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Old 05-08-2010, 10:11 PM
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Re: h23 vtec cranks but dont run

its the jdm h23 vtec, the crank sensor, tdc sensor, vtec syl, intake, oil pan, oil pump, and magnetic pully have all been changed
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Old 05-08-2010, 10:15 PM
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Re: h23 vtec cranks but dont run

Maybe it has something to do with using an OBD1 motor with an OBD2 ECU? Actually...what distributor are you using?
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Old 05-08-2010, 10:17 PM
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Re: h23 vtec cranks but dont run

using jdm h22 with external coil
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Old 05-08-2010, 10:33 PM
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Re: h23 vtec cranks but dont run

Quote:
it purrs like a kitten until you touch the gas
What happens when you touch the gas?
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Old 05-08-2010, 10:34 PM
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Re: h23 vtec cranks but dont run

if you press the peddle really slow it will rev to about 3k, with a few pops if you push it it just dies and pops sometimes
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Old 05-08-2010, 10:43 PM
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Re: h23 vtec cranks but dont run

Sounds like your timing is ****ed up bro. But I'm by no means an expert. Wait for Neck to chime in again and see what he says.
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Old 05-08-2010, 10:49 PM
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Re: h23 vtec cranks but dont run

the distributor timing? cause im sure the timing belt is dead on
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Old 05-08-2010, 11:12 PM
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Re: h23 vtec cranks but dont run

hmm seems timing is not adjustable on the distributor, says change ecm
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Old 05-08-2010, 11:33 PM
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Re: h23 vtec cranks but dont run

Timing is adjustable via the distributor (but not by much). You can advance it by loosening the mounting bolts and rotating it counterclockwise (towards the firewall), retard it by rotating it towards the radiator.

Another question, the ECU you're using... did it come from a car with a manual or an auto tranny? Because that could matter.
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Old 05-08-2010, 11:36 PM
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Re: h23 vtec cranks but dont run

the ecu is the one that came with the car and its 5 speed but the motor i got had a flex plate
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Old 05-08-2010, 11:38 PM
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Re: h23 vtec cranks but dont run

Don't quote me, but that COULD be the problem. I know when you're doing swaps, you need to use the appropriate ECU (if you're using a manual trans, you need the ECU for the motor with manual trans, if you're using an auto trans, you need the ECU for the motor with an auto trans). No promises, but that could be the problem. Sorry I can't get anything more definitive for you man. :shrugs:
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Old 05-09-2010, 12:03 AM
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Re: h23 vtec cranks but dont run

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Don't quote me, but that COULD be the problem. I know when you're doing swaps, you need to use the appropriate ECU (if you're using a manual trans, you need the ECU for the motor with manual trans, if you're using an auto trans, you need the ECU for the motor with an auto trans). No promises, but that could be the problem. Sorry I can't get anything more definitive for you man. :shrugs:
The H23 vtec is from an accord sir wagon and it never came in manual, only auto. It should fine on the manual prelude obd2 ecu.
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Old 05-09-2010, 12:05 AM
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Re: h23 vtec cranks but dont run

i may have missed a vac line idk if it would cause that bad of a problem though
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Old 05-09-2010, 12:24 AM
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Re: h23 vtec cranks but dont run

I don't think that would cause that big of a problem.

Quote:
It should fine on the manual prelude obd2 ecu.
It should be fine as long as he changes the jumpers as indicated here: PGMFI.ORG - Grassroots ECU Development - Library . OBD1P13AutoManual

I'm pretty sure this is necessary when using an auto ECU with a manual transmission.

Edit: Try this link as well just for cross-reference: http://www.hondacivicforum.com/forum...ad.php?t=65008
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Old 05-09-2010, 12:26 AM
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Re: h23 vtec cranks but dont run

Is the timing belt still walking, or have you gotten that straightened out?
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Old 05-09-2010, 12:27 AM
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Re: h23 vtec cranks but dont run

the ecu is manual and the car is manual, its just the motor that was auto at one time did not know if there was a difference
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Old 05-09-2010, 12:28 AM
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Re: h23 vtec cranks but dont run

Did you take all the auto tranny related parts off? Dumb and obvious, I know..but...just want to make sure. lol
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Old 05-09-2010, 12:30 AM
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Re: h23 vtec cranks but dont run

the timing belt is running about a 1/16 of an inch hanging off the outside of the cam gears its not eating it now i switched the stud off the old motor just in case it was bent. idk have took it apart 5 times and reinstalled and it still walks to the outside. also i checked the alldata to make sure all parts were in place and tightened to the right spec
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Old 05-09-2010, 12:33 AM
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Re: h23 vtec cranks but dont run

Quote:
the ecu is manual and the car is manual, its just the motor that was auto at one time did not know if there was a difference
Was the motor out of an OBD1 car? Because I just remembered...I think you would have to use the distributor from the OBD1 motor even though you're running OBD2. Not positive though. Jesus this is confusing.

Edit: Also...if your motor came from an OBD1 car, you need to run an OBD1 ECU obviously... If you run an OBD2 ECU with an OBD1 motor (or vice versa) it will give you problems since OBD2 motors have sensors (CKP and some others) that OBD1 motors don't have. I'm hoping this helps and I'm not making it worse. I'm just trying to get more details to help.
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Last edited by dbd6604; 05-09-2010 at 12:35 AM.
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Old 05-09-2010, 12:34 AM
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Re: h23 vtec cranks but dont run

yes i switched all the auto parts off, and dont worry i would try about anything right now to fix this, any help is greatly app. wish i had done the whole project myself and avoided some of these probs
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