Need help out of ideas

[Mwagg87]

2001 Dodge 2500 5.9 360 vin code Z. Having issues where it backfires in the throttle body and doesn’t want to take fuel. Start and idles fine for a few secs then drops down to 5-600 rpms. I thought they idled a little higher than this around 8-900 rpms but unsure. White smoke from exhaust when I try to move. Also I think it’s in limp mode. Won’t shift and starts off in second gear. Today ran a scanner on it and it came back with upstream o2 sensor, some small vac leak and trans code for governor switch not between 15-20psi. Changed the o2 sensor today cleared the code now my gauges don’t work and I think my alternator is working but not charging my battery. No luck with my original plans so feel free to ask me anything on this if you need more details because it is driving me crazy. Don’t consider myself a A class tech but know my way around vehicles. Dodged just are not second to nature with me and been wanting to try dodge for a while now. So please any experts out there or someone that has traveled down this road before. Any help is appreciated.

 

[crazykid1994]

How many miles on it? Are you getting actual blow out the throttle body? My 97 318 idled at 650. Should be the same for the 360 gasser. Could be head leaking? Maybe do a compression check

 

[Mwagg87]

Yeah all cylinders checked out fine. It has 118,000 miles as of now. You can hear the popping coming from the intake so I would imagine that’s where it would e coming from. Love to solve this it’s a real pain in my a** right now. Not seeing any actual blow out haven’t taken the air cleaner off yet to inspect

 

[crazykid1994]

Hmm. If all cylinders checked out fine then most likely not bad timing. Could be dumping to much fuel with the o2 sensor code. Did you reset the computer after changing the o2? To reset the computer you need to pull the battery leads and turn the headlight switch on and let it sit about an hour to make sure the computer drains all the way. What brand o2 are you using? These trucks are picky. Also the trans is out due to the governor pressure sensor reading. Could be a bad sensor they are know to clog up. There is a swap to another sensor that is self cleaning but I can’t renember off the top of my head right now. Checked oil level for trans?

 

[Mwagg87]

I used a o2 sensor from autozone and I disconnected the battery last night and it’s has been setting since then. Going to remove throttle body and checking out trans this evening. Will post back on results

 

[crazykid1994]

I used a o2 sensor from autozone and I disconnected the battery last night and it’s has been setting since then. Going to remove throttle body and checking out trans this evening. Will post back on results

Which brand sensor? These trucks like nkg or factory sensors. I know a lot of the trucks won’t run right if you use another brand sensor. I don’t understand why but they just don’t.

 

[hotrod45]

White, if it's really white, in the exhaust indicates coolant.

 

[NCRaineman]

White, if it's really white, in the exhaust indicates coolant.

White smoke from the exhaust is a classic sign of a failed head gasket. Check your oil. Does it look odd, like there might be coolant mixed in? Are you losing coolant but none is dripping from anywhere?

 

[hotrod45]

Yes, head gasket, but it could be something like a cracked valve seat or a crack elsewhere. I think I'd start with a compression test.

 

[Mwagg87]

Which brand sensor? These trucks like nkg or factory sensors. I know a lot of the trucks won’t run right if you use another brand sensor. I don’t understand why but they just don’t.

I think it was a Bosch

 

[Mwagg87]

White, if it's really white, in the exhaust indicates coolant.

No just small puffs when I try to rev it up. But can’t get it to rev.

 

[Mwagg87]

Yes, head gasket, but it could be something like a cracked valve seat or a crack elsewhere. I think I'd start with a compression test.

Compression check was good next was thinking a leak down test.

 

[hotrod45]

I'd be a little leery of putting pressure on the cooling system until I had some confidence that it isn't leaking into a cylinder. Water doesn't compress.
I had a question about the "small puffs:" one small puff when you tried to rev, or a series of small puffs - - ??

On edit: I didn't read your post correctly the first four times through. Try using punctuation. It would look something like: "Compression check was good. Next, was thinking a leak down test."

 

[Mwagg87]

I'd be a little leery of putting pressure on the cooling system until I had some confidence that it isn't leaking into a cylinder. Water doesn't compress.
I had a question about the "small puffs:" one small puff when you tried to rev, or a series of small puffs - - ??

On edit: I didn't read your post correctly the first four times through. Try using punctuation. It would look something like: "Compression check was good. Next, was thinking a leak down test."

Small puff when trying to rev. But starts misfiring and results in falling on its face that’s when the white puffs are present.

 

[crazykid1994]

Checked how the plugs look? Still sounds to me like maybe it doesn’t like the o2 possibly dumping to much fuel. My truck wouldn’t rev when my o2 went bad and it fouled my plugs and started misfiring from to much fuel. Or possibly do a leak down test and make sure oils not seaping into the cylinder.

 

[NCRaineman]

I'd be a little leery of putting pressure on the cooling system until I had some confidence that it isn't leaking into a cylinder. Water doesn't compress.

I've hooked an air hose up to the radiator vent hole on my old Chevy 1500 and given it a few bursts before. That's good if you need to chase down an EXTERNAL coolant leak, but won't help you with an internal one.

 

[Mwagg87]

Checked how the plugs look? Still sounds to me like maybe it doesn’t like the o2 possibly dumping to much fuel. My truck wouldn’t rev when my o2 went bad and it fouled my plugs and started misfiring from to much fuel. Or possibly do a leak down test and make sure oils not seaping into the cylinder.

I had two plugs fouled when I did my compression test replaced those with new when I was done.

 

[crazykid1994]

I had two plugs fouled when I did my compression test replaced those with new when I was done.

Sounds like there’s a clue to your problem. Which cylinders? Have you checked the intake plenum? Might be sucking oil through your intake

 

[hotrod45]

Were the plugs in adjacent cylinders? BTW, oil burns with a blue cast to the smoke. The best that could be said about that is that it's whitish, but it's not really white because of the blue in it. Oil burning has a distinct smell, too. Speaking of which, there is another thread discussing the sweet smell of coolant. If there is coolant in the exhaust, it's in the form of steam, so you get the white, but there is sort of a sweet smell to that, too. Sometimes these puzzles need all of our senses.