[armiller]

I’ve replaced the fuel pump and am getting good pressure at the fuel rail. I checked the fuses, swapped a relay from my 740i to make sure that wasn’t an issue, and swapped the crank sensor on the transmission with one from my 740iL donor car. So now what? Truck was running fine until I parked it a month ago and didn’t start it for a few days during the deep freeze we had in Chicago. Battery is new as well. Do I move on to the fuel injectors? I may have no choice but to take it to a shop at this point. Problem is they are going to get me for at least $300 before they even get to the point where I’ve already checked. I’ve played this game before.

 

[Mrmerlin]

spray some ether into the intake and crank it,
if it fires your missing fuel.
Other option disconnect the battery and charge it at 6 amps for 4 hours then reconnect the battery and see if it will start.
Make sure all of the power wire connections are tight also make sure the squibb terminal has not moved the HOT wire from the terminal

 

[armiller]

spray some ether into the intake and crank it,
if it fires your missing fuel.
Other option disconnect the battery and charge it at 6 amps for 4 hours then reconnect the battery and see if it will start.
Make sure all of the power wire connections are tight also make sure the squibb terminal has not moved the HOT wire from the terminal

We did use some ether prior to replacing the pump. I will try it again. We’ve charged the battery up a few times. I leave it disconnected now so it doesn’t drain. The positive cable is solidly connected. Are you referring to the BST wire? Sorry, I’m still learning the jargon for Range Rover.

 

[Mrmerlin]

Yes the BST could have come loose.

NOTE this picture shows the cable end has been moved to the disconnected position.
the rim of the barrel should be inside the ramp fingers

 

[Rovah]

If you already checked for air, fuel, spark and corresponding fuses and everything checks out okay, I would say the key lost synch between the ecu and immob. Vehicle is immobilized? Maybe look into synching it which will require a diagnostic tool. Hope you have one. Do you have another key you can try? Willing to bet the deep freeze drained the battery and caused the ecu to reset while it sat around for an entire month. Either ways a diagnostic tool will help find the causes of no start. Invest in one if you have not already. Comes in handy almost every time and you can say bye bye to the dealership! Invest in a battery trickle charger for the range rover. They dont like sitting around for long without a strong battery. Ask me how I know lol

 

[armiller]

Any way to tell from this picture if the BST cable popped? Everything seems tight. Honestly, I’m stumped because this morning it wouldn’t even turn over after a full battery charge. Could it be the connection at the starter? I know a starter swap on my 7-series is an adventure in extensions and swivels. I’m not looking forward to changing that out.

 

[kg74]

You need to back up from the beginning. Why did you change the fuel pump and has it run since you did? Can you provide any more details on what lights and noises you are hearing. Be as specific as possible. Do the lights dim? Was the starter having problems before? What has changed since it ran - both what you did and what the RR is now doing. I think an immobilizer issue will still turn the engine, but prohibit it from running.

The starter is not a difficult project on your truck.

Check your engine oil for gas smell. With a clean oil collection pan drain your oil and look for metal sparkle traces. If it is clean and newer you can reuse it. My wife killed engine #3 on my RR by turning it over to the point the cylinder walls got washed and toasted the block. It was the coldest MN day of 2017 and she kept turning the motor until the battery died (and ruined the engine). Can you turn the engine by hand freely - numerous times? Pull the fan and try. I experienced the same thing and in the end found the engine was ruined. This is a worse case scenario, but what you are finding is exactly what I found and changed.

Back up, don't spend any money and start eliminating the obvious step by step. From a bad connection, fuse to a ruined engine - all of this you can do on your own.

 

[Rovah]

Carry out a compression test on all 8 cylinders. Like the post above mentioned, it could be a ruined engine. My 05 had that same dilemma. Cylinders walls were ruined and flooded by fuel due to overcranking trying to get it started. No compression during cranking but my starter was cranking away. I am currently rebuilding my 05. In your case check your oil first for fuel smell/contamination.