Jxelio

So the other day i just finished my timing. I put everything back together ready to go. I go to start it and it only cranks. Has spark but no fuel. I scan it and it wasnt able to communicate with the ECM. I sent the ECM out to a repair shop and they tested it and told me nothing was wrong with it. I was thinking maybe a ground was bad or loose. Only things i took off for timing was the pulleys and cover. What are your thoughts?

dkmura

iTrader: (64)

Welcome and I moved this thread to a more appropriate forum. Let's start with a few more details about your Z before we can express any thoughts:

-How many miles are on it and how long have you owned it?
-Why did you need to take off the pulleys in the first place? Was the VQ running normally before this "repair"?
-After the ECM returned from the repair shop, did you reconnect it and try to run another scan for codes?
-Have you checked all fuses and relays?
-Are you getting fuel pressure?

Jxelio

ive owned my z for over a year now. Has 150k miles. Reason for repair was because timing wasnt done right. I have a vhr swap done to it and we forgot the 3.7 comes with a guide in the timing. I havent gotten the ecm back. But it was proven that wasnt the issue. I checked all fuses and relays but i have no checked fuel pressure. I cranked and checked for pusle in injector plug and nothing

dkmura

iTrader: (64)

So you've done an engine swap from a VQ35DE to a VQ37VHR? That would have been a essential fact to lead this tread with!

Who did the swap?
Did you utilize the engine harness and ECM from the salvaged VQ37VHR?
Has this engine ever run in the Z before?

Jxelio

i had a vq35hr in it before. I swapped in the 3.7. Put the 3.5 heads on 3.7 block. It ran perfectly but the bearings went out. Thats not the issue tho!