I just converted my 99 dx hatch to OBD1 with a P05 ecu. And it cranks , but won't start. It feels like there is no fuel being added. What to do?

 

get a syringe put some gas in it open throttle body while friend cranks shoot some in the TB that will tell you if you have a fuel issue

next get two friends have one crank and one hole spark plug wire to his tounge and touch the valve cover that will tell you if you have an ignition issue

 

anyone>?

 

well I just put the old ecu back in and it fired right up. I dont know what it could be. The ecu worked fine in my friends hatch

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dank24 &raquo;</TD></TR><TR><TD CLASS="quote">well I just put the old ecu back in and it fired right up. I dont know what it could be. The ecu worked fine in my friends hatch</TD></TR></TABLE>

You prolly fried the other one. if this one works then just use it. now what ecu is in there right now and what one didn't work? basically i want to know if your running the right ecu at the moment or if your running the wrong one and it just seems to work for you.

 

my guess would be the other one is fried if it will start right up with a different ecu.

 

I am converting ot OBD1 because I have a test pipe on my car and the 2nd O2 sensor keeps throwing codes. I put the orginal one back in and it works. What causes a ecu to be fried?

 

do basic order of operations...

Is the fuel pump priming first

Work from there would be my advice...

if so, try letting it prime once, letting the fuel systme pressurize, turn the key back, turn it back so it primes again, wait a second or two, then turn it off, then do it again (3rd time), then try starting ur car, u can usually tell that way if the fuel pump is going

 

but it starts with the stock ecu

 

is there a way to tell if the ecu is fried? I don't want to go pointing fingers before i deff know.

 

u have to check it in a different car and see if that one starts

 

also I heard there are 2 different conversion harnesses? do I have a wrong one? It fits correctly though