DC2R not starting!!! :( Help appreciated

**mr-pham** · 22-06-2013 04:51 PM

Hey guys, so the other morning I went to start my car but it wouldnt start. It cranks but wont turn over.

I've checked the ignition, I got spark, dizzy is fine im pretty sure, batteries good.

The fuel pump however is not priming, put key to ignition on and cant hear any priming. I disconnected the fuel line after the fuel filter to see. It does pump fuel but just one small pulse of fuel. Hardly enough to provide fuel for the engine.

Ive replaced the fuel pump, did not help. Checked fuses all good, using a multi meter there is 12 volts at the fuel pump fuse, tried my Main relay in my mates car and it started fine.

I measured the connector into the fuel pump and its getting no voltage, same for the fuel pump wire that goes into the main relay.

Im really stumped, it does seem that the fuel pump wire from the main relay has been tampered with as it is duck taped (peeled it off connection seems fine), maybe to do with my Hondata s300 P28 ecu. Im thinking its something to do with hondata but my experience with it is very little.

Does anyone know if hondata s300 could cause any issues with the fuel system. Any auto electricians who are free to come by and have a look. Willing to pay money! I'm desperate as i need the car by monday to get to work

Would be grateful for any advice! thanks!

**dorikin** · 22-06-2013 05:27 PM

try stock ECU

**mr-pham** · 22-06-2013 05:32 PM

safe to run car on stock ecu? after its been tuned? with internal work

**mr-pham** · 22-06-2013 06:53 PM

Originally Posted by dorikin

try stock ECU

thanks man!! repped! it started and ran. So now how do i find out whats wrong with the ecu. Would it be the p28 or s300. Will check to make sure the conversion harness is all in tact tomorrow.

**dorikin** · 22-06-2013 07:37 PM

most likely the P28, open up and check all capacitors

**VTI-RRR** · 23-06-2013 05:39 PM

Could be as simple as a fuse thats what happened to mine
Is the fule pump priming now since you changed it?

**cbauto** · 24-06-2013 01:21 AM

Originally Posted by VTI-RRR

Could be as simple as a fuse thats what happened to mine
Is the fule pump priming now since you changed it?

I sometimes make the same mistake you did.

**Super-DA9** · 24-06-2013 08:21 AM

I've got a friend having this exact issue. It seems there are a few bad P28's around.

Before the starting issue there was another problem where VTEC stopped engaging with the P28 but still worked with the factory unit. We checked everything from the wiring to the solenoid resistance and it all checked out fine. One day it just started working again.

Now he has this issue haha.

Definitely keep us posted if you get it fixed!

**ECU-MAN** · 24-06-2013 11:41 AM

if your engine light stayed on all the time then its either the ECU or the S300 unit. However it sounds like the ECU, I can repair this for you.

**mr-pham** · 25-06-2013 09:17 AM

Thanks but yeah Definately not a fuse. Measured and checked every single fuse.

Welll I'm bringing it by revzone today for them to check it out. I emailed hondata and yeah they told me its most likely the p28 ecu that's played up. Hopefully the actual hondata unit is okay. Will keep you guys updated