i pulled out my vitara'd d16 and put a stock y8 back in the car. it started and i drove it yesterday around the block. today i went to start it and it cranks, but wont turnover. i have spark, and i have fuel to the fuel rail. injectors are not firing. i've used a p2p ecu, and my p28 that was tuned for the turbo d. when i crank the car i hear a clicking noise comming from the passanger side under the dash but i cant figure out what it is.

Any one have any ideas? is there a sensor that tells the ecu to fire the injector? is there a relay for the injectors? any help would be great!

 

ahh...think i figured it out. mods can you please delete this thread.

 

what did you find out? im kinda having the same problem

 

this is totaly the same problem i am having. Im pulling my hair out trying to sort this.

 

it was more than likely his main relay under dash.

 

what relay? and how do you know if its bad?

 

The injectors are fired by the ECU/ECM, [ground is supplied by the ECU/ECM] 12V+ is supplied by the PGM-FI Main Relay when ign. switch is in run and start.

Location of PGM-FI Main Relay depends on MM&Y of car, most are under the dash on drivers side just above hood release.

With a multimeter, [or ECU/ECM safe test light] you can check at the injectors, turn ign. switch to run and test for 12V+ at the injectors, [12V+ lead is the one that is the same color on all injectors]

If there is no power at the injectors the problem is the PGM-FI Main Relay, a blown fuse, wiring or a connection problem.

If there is power at the injectors the problem is the ECU/ECM, wiring or a connection problem.

To test for ground triggers at the injectors test the lead that is a differant color at each injector while engine is being cranked to start, again a multimeter or ECU/ECM safe test light is needed.

Problems with PGM-FI Main Relays in Honda/Acura are common, normally effecting fuel pump.

They can be repaired, in most cases, this will help... http://www.tegger.com/hondafaq/mainrelay.html 94