well, my brother came to town for Christmas & his car broke down, so I did the brotherly thing & lent him my Disco for the day Monday. Well, it's now Wednesday & he still has it (didn't tell me he didn't have the money to get it fixed till I vouched for him at the local mechanic). He calls me this morning to tell me the Disco is sitting on the side of the road and acts like it's getting no gas whenever the transmission shifts, and if he lets it sit for a few minutes; it will run, but as soon as it shifts, it will shut off. Thinking it was almost zero here this morning, I walked to where he was & put (2) cans of gas line antifreeze into the tank & it drove about 2 blocks shuddered & shut off. Left it sit for about a minute or so & tried to start it. It turned over like it started & shut right off again. After a few attempts, it started & idled, but seemed to be missing. Left it idle for about 5 minutes and the missing went away. Drove it for about 2 miles and it shifted and ran just fine. I was just thinking it was just water in the fuel as it straightened out, but when I got out of the truck, I could smell burning rubber coming out of the driver's side rear wheel well. Looked under the truck, but saw nothing that could be close to getting that hot anywhere in that area. UltraGauge gave no codes, while it was missing & shutting off so no clue if it was ice in the lines which was corrected by the antifreeze, but if it did, I might have a completely separate issue. I was thinking that since the truck was shutting off when the transmission shifted, that might be where the burning rubber smell was coming from, but there's no rubber in that, is there?? Ideas??

 

Check the accessory belt can give rubber smell, not running and shutting off belt slipping on the alternator?

 

Thanks Tom, Update, so much for ice in the fuel line. Turned the keys back over to the brother so he could get back to the mother's house. He said he stayed at my sister's for about an hour after I drove it; then started back. went about a mile, and the truck started "bucking" and quit. Said he left it sit for about 10 minutes, and it started up, ran ok for about a half mile, and did it again. I don't understand what the shifting he is talking about has to do with anything, but he said it's almost like it's running out of gas. Can't see a blocked fuel filter as that was just changed. and can't see it being a fuel pump either. I had him go out and let the truck run for about 20 minutes at an idle with no missing or running issues to get the temp up to normal operating temperature a few minutes ago, but it died after it was placed in gear. I also did a search & found a post where the fuel pump relay does this in cold weather...

 

Let me know if you figure it out mainseems fine in the 20* weather so far and she went swimming last Sunday, crank sensor? Get hot and not want to run right let cool off and runs fine , back of engine drivers side on the side where trans attaches, wire should be heat shielded

 

Will do. But this is just getting worse... Finally put my hands on her this evening. Started, but missing horribly!! Seems like I m only running on a few cylinders & the rpm's re all over the place. If I try to hold the engine at 1500 rpm's they will jump to 5000 without moving the pedal & if I release the pedal, it shuts right off. Wondering if the plugs got fouled earlier when it started shutting off..

 

Mass airflow sensor maybe?

 

That would cause the misfire with no codes? For something that started with a stalling issue and grew to a subsequent misfire? Wish I would have been there when it all started. I have no idea where it started, or where to look now. Going to change the plugs & recharge the battery tomorrow which he ran down trying to restart the truck when I can get to where he left it sitting (talk about a fair weather relative).

 

check fuel pressure on the test valve on passenger side fuel rail, looking for 32-34 PSI when pump is running. Fuel filter could have gunk in it (Right rear wheel well). Pump wiring connector could be corroded and will have a mind of its own with temperature changes.

 

Okay, thanks! Since it isn't missing would the fuel pressure read with only the key on? Can I get a pretty good reading with a tire pressure gauge or do I need a special tool? I'm taking it the connector you speak of would be the one under the carpet in the cargo area? I noticed you didn't approach fuel relay or the possibility of fouled plugs, so changing them wouldn't help I guess... Filter is pretty new (4 months) and was installed with the Magnacore wires and plugs.