2007 Toyota Tundra crank NO START!

Hello everybody! I am having a problem with my 2007 Toyota Tundra 4.7. Recently have had the 4Lo light along with other lights turned on and was running in limp mode. Last week my car stopped running. Car will crank but no start. OBD2 will not communicate. I did change out fuel pump thinking that was the problem, car still will not turn on. Any insight on this problem. At this point will appreciate any help I can get. thanks in advance!

 

Just an educated guess by the symptoms, it sounds like an AIP (air injection) problem.
I'm sure others will chime in.

 

Does AIP stop fuel from going to the engine because i have none.

 

From what I've read, it causes a limp mode. I don't know about fuel delivery.

 

Sounds like AIP

 

Fuel pump relay ??

 

Also check MAF

 

And if it won’t communicate maybe start looking at your powers and grounds ??

 

Did you ever find an issue? Im having kind of the same problem, and done quite a bit of research and seems as if the computer is getting shorted out somewhere and thats what causes the no communication to the OBD2. Any info would be great.

 

Check relays and grounds... do any of you have aftermarket electronic accessories? If so where they wired correctly an not spliced into random wires for power?