I have always read the forums and now I have a problem of my own, so I joined in. Hopefully I can get my problem solved. I have a 2000 LR D2 4.0 and I have had the heads resurfaced, new magnacor 8mm wires, Bosch dub platinum plugs, head gasket, oil pump, water pump, timing chain, and all the gaskets changed about nearly 2 years ago. The vehicle always ran good and i was very fortunate to have had a good running vehicle for 6 years. Now I have gremlins.
I drove the Disco to my grandma's house one day and stayed for several hours. When I got ready to leave, the truck wouldn't start only turned over. There are no codes. I figured it's just the CPS like I read on the forum. So I left it and ordered the part. The part came in and I replaced it; still nothing, it's doing the same. Next I thought, it's got to be the fuel pump, which what crossed my mind in the beginning. So I ordered a decent 355 fuel pump on eBay, and just changed the pump in my FP assembly. Easy job took about 45 min, put it in, and turned the key. STILL NOTHING......no sound from pump in key secondary. I switched the fuel pump relay with the washer relay (they both had the same part #)....NOTHING. NOW HERE IS THE CRAZY PART. I removed the breather and decided to use a little bit of starting fluid in the throttle body to see if it would crank and run as long as I supplied some kind of catalyst to start. IT DID....AND IT KEPT RUNNING. I was ecstatic, I have spark. I replaced the breather while it was running and 3 seconds after reconnecting the MAF sensor, it shut off. I got to thinking that maybe this is where my problem was the whole time. So I disconnected the MAF and tried to crank it and it started without starting fluid but it was a hard start. It ran and I even got in and drove it around the yard, but the acceleration sucks and the idle is a bit rough. Even though now I think it's probably the MAF, the truck still doesn't supply fuel on its own in key 2nd. It seems once it gets started, the fuel pump starts running or the motor is just sucking the fuel out of the tank like a vacuum. I think it's the latter since accel sucks and plus after sitting for 10+ mins, I have to spray starting fluid again like the fuel drains back. I need to order the MAF but I think I am done just throwing parts at it until I really know what's wrong. I will get a voltage meter and a test light to check relays and wires. I will remove the IACV and other throttle body related parts and clean them with TB cleaner. A lot of people are having similar problems and I think they are all related. The problem seems simple, just finding out exactly where it's at is the hard part (even though I am good at troubleshooting).
MAF sensor, ECU bad, inertia switch bad, bad ground some where, or maybe a loose connection at the ECU; could these be the problem? What's your take on this? Any help would be greatly appreciated. I have a long way before I give up but before I reach that limit, I might just add a jumper switch for the fuel pump and keep driving. Sorry for writing a book, I wanted to cover everything I've DID so far, plus the results. Thanks for your help in advance.
I drove the Disco to my grandma's house one day and stayed for several hours. When I got ready to leave, the truck wouldn't start only turned over. There are no codes. I figured it's just the CPS like I read on the forum. So I left it and ordered the part. The part came in and I replaced it; still nothing, it's doing the same. Next I thought, it's got to be the fuel pump, which what crossed my mind in the beginning. So I ordered a decent 355 fuel pump on eBay, and just changed the pump in my FP assembly. Easy job took about 45 min, put it in, and turned the key. STILL NOTHING......no sound from pump in key secondary. I switched the fuel pump relay with the washer relay (they both had the same part #)....NOTHING. NOW HERE IS THE CRAZY PART. I removed the breather and decided to use a little bit of starting fluid in the throttle body to see if it would crank and run as long as I supplied some kind of catalyst to start. IT DID....AND IT KEPT RUNNING. I was ecstatic, I have spark. I replaced the breather while it was running and 3 seconds after reconnecting the MAF sensor, it shut off. I got to thinking that maybe this is where my problem was the whole time. So I disconnected the MAF and tried to crank it and it started without starting fluid but it was a hard start. It ran and I even got in and drove it around the yard, but the acceleration sucks and the idle is a bit rough. Even though now I think it's probably the MAF, the truck still doesn't supply fuel on its own in key 2nd. It seems once it gets started, the fuel pump starts running or the motor is just sucking the fuel out of the tank like a vacuum. I think it's the latter since accel sucks and plus after sitting for 10+ mins, I have to spray starting fluid again like the fuel drains back. I need to order the MAF but I think I am done just throwing parts at it until I really know what's wrong. I will get a voltage meter and a test light to check relays and wires. I will remove the IACV and other throttle body related parts and clean them with TB cleaner. A lot of people are having similar problems and I think they are all related. The problem seems simple, just finding out exactly where it's at is the hard part (even though I am good at troubleshooting).
MAF sensor, ECU bad, inertia switch bad, bad ground some where, or maybe a loose connection at the ECU; could these be the problem? What's your take on this? Any help would be greatly appreciated. I have a long way before I give up but before I reach that limit, I might just add a jumper switch for the fuel pump and keep driving. Sorry for writing a book, I wanted to cover everything I've DID so far, plus the results. Thanks for your help in advance.