Hey guys, I'll keep this short. Basically, did some body/wheel changing on the car the last few weeks. Started the car periodically while on stands, no issues. Drove it for the first time last night. No issues! Parked it at home. Come to start it today, NOTHING! Been searching for a few hours, but haven't seen anyone with these EXACT issues, so I can't use peoples advice in most cases. Here's what's happening:

All power comes on fine.
Cranks fine, Volts are normal.
Fuel pump does NOT prime.
Tach jumps on initial crank, but goes dead.

Here's what I checked

Plugs/Wires are fine.
All EGI/Engine fuses are good.
Haltec Fuses are good.
Under-dash ground for Haltec is good.

I can't figure it out! Reese (20B10AE) has been helping, but can't get eyes on to actually diagnose. PLEASE HELP!

 

Did you check V at the pump wiring? Do you suspect the pump could have stopped working?

I believe Haltech has a relay for the pump as well, something to check as well.

 

Also check tps wiring that can cause no start...my tach didn't jump at all though. Jumper the yellow connector by the passenger side front strut tower if u hear the fuel pump you know it's not bad.

 

probably a trigger setup issue, you'll need to connect the ECU to your computer and get into the software setup for the ignition and check the trigger type, tooth count and offset.

the pump should still prime regardless though with the ignition signal so it sounds to have multiple problems.


where i would start is check both the 12V battery wire and the ignition on input signal wire for 12v both static and WHILE CRANKING. if either drops below 7v at any time with the key on or cranking then the ECU will turn off. as a preliminary test you can also wire the pump directly to the battery to at least be sure the injectors are getting fuel.

 

if the fuel pump doesn't prime, haltech probably isn't getting power

 

I tried connecting the haltech to my computer and everytime i try, it says "reconnect to haltech". so im assuming the haltech isn't getting power? I'm going to get a voltmeter on the connector to see if there's power going to the plug. Ill give that trigger wire a test too. becasue i read that somewhere as well. Thanks guys! ill keep ya updated.

 

If it's getting power, the Haltech could be bad.

 

That's what I'm really hoping isn't happening! I don't have the money to replace it.