I’ll try to keep this short and coherent, since I got a bit of info.
Truck info: 2001, 3/4, 4x4, auto, 247k miles, FASS DDRP, 5in. straight exhaust, I bought truck 3 months ago, VP-44 was supposedly replace within last 3 years (the amount of time prev. owner had it), no aux. gauges (no time or money yet).
Problems:
-I have always felt a very slight surging/lopeing under little throttle. Runs great through mid. throttle. Power falls off at high rpm, but I think that would be normal for stock engine.
-Didn’t know bout ¼ issue, I ran it out. Filled it, primed it, started it. Hard starts once in a while now.
-Return line from IP to the tee broke. Fixed with fuel hose and clamps, may leak a bit still. Hard/smokey starts once in a while. If I cycle “wait to start” 3 times has easier starts.
-Started to surge at idle once in a while, not a lot. Does it cold or hot, then will stop after driving it or won’t stop.
-Changed oil, oil filter, and fuel filter (stock). Still all same problems.
-Did 3-key code trick: PCU - P1693 and ECU – P0234. Both are boost related. P1693 is companion code. Got crappy code reader, it won’t stay linked to truck, can’t read codes or even truck ID. Linking prob. may be symptom?
Questions: So I have the ¼ tank issue, hard/smokey starts once in a while, surging under little throttle, surging idle once in a while, codes P1693 and P0234.
-Could my IP be going? Was told was new, and looks to be as well. I don’t know if it’s the newest version with the upgraded parts.
-Could replacing my LP help? Or what can I do fix the ¼ tank prob.? I want to keep DDRP and no tank sumps. What’s the big line kit, model or part number? Raptor 100 or 1000?
-How many fuel pumps does my truck have? I’ve see people talk about an in-tank pump, but don’t know if mine has one. Could I put one in? Or I don’t need it?
-What’s the APPS, never heard of it before? Reset procedure? Replacement cost? Would my truck have a TPS, could that cause these probs? Also, cam sensor, could cleaning that help?
I’m sorry for the long post and all the questions. It would help if the cheapest and easiest solutions were listed first, then I can eliminate them as I go. Then I will try to update on what I’ve done as I do it.
Dec. 7, 2016 – original post
Dec. 12, 2016 - APPS reset, will update after few days of driving
Dec. 16, 2016 - APPS reset didn't work, back to surging/lopeing issue, except now it will do it in gear while at full stop, before only did it in neutral or park.
Dec. 27, 2016 - Truck will now lope, hard, in Park, Neutral, and in Gear at Stop. Had a couple hard starts for first time in few weeks. And fuel gauge showed no fuel for about half hour one day.
Dec. 28, 2016 - Have been having some really hard starts lately. Took half hour first time, had fuel, had charge, cracked easily, it wasn't even as cold as it has been lately. did it to me again today, I noticed the Wait light went right out after I turned key to ON. so I cycled the key a couple more times as I always do. wouldn't start. so I bumped it then let it set and I could here the LP going, then stop. I hit the key and it finally starts. Could this be a sign my IP is going, or LP? And why'd my Wait light go out so quick?
Jan. 15, 2017 - Changed the alt to a 180 amp Nations unit, no big changes. Will install big line/LP relo kit soon.
Jan. 22, 2017 - Installed full big line kit and LP relocation kit. No change from alt install. Still has tough starts, and white smoke. Will check for leaks again.
Truck info: 2001, 3/4, 4x4, auto, 247k miles, FASS DDRP, 5in. straight exhaust, I bought truck 3 months ago, VP-44 was supposedly replace within last 3 years (the amount of time prev. owner had it), no aux. gauges (no time or money yet).
Problems:
-I have always felt a very slight surging/lopeing under little throttle. Runs great through mid. throttle. Power falls off at high rpm, but I think that would be normal for stock engine.
-Didn’t know bout ¼ issue, I ran it out. Filled it, primed it, started it. Hard starts once in a while now.
-Return line from IP to the tee broke. Fixed with fuel hose and clamps, may leak a bit still. Hard/smokey starts once in a while. If I cycle “wait to start” 3 times has easier starts.
-Started to surge at idle once in a while, not a lot. Does it cold or hot, then will stop after driving it or won’t stop.
-Changed oil, oil filter, and fuel filter (stock). Still all same problems.
-Did 3-key code trick: PCU - P1693 and ECU – P0234. Both are boost related. P1693 is companion code. Got crappy code reader, it won’t stay linked to truck, can’t read codes or even truck ID. Linking prob. may be symptom?
Questions: So I have the ¼ tank issue, hard/smokey starts once in a while, surging under little throttle, surging idle once in a while, codes P1693 and P0234.
-Could my IP be going? Was told was new, and looks to be as well. I don’t know if it’s the newest version with the upgraded parts.
-Could replacing my LP help? Or what can I do fix the ¼ tank prob.? I want to keep DDRP and no tank sumps. What’s the big line kit, model or part number? Raptor 100 or 1000?
-How many fuel pumps does my truck have? I’ve see people talk about an in-tank pump, but don’t know if mine has one. Could I put one in? Or I don’t need it?
-What’s the APPS, never heard of it before? Reset procedure? Replacement cost? Would my truck have a TPS, could that cause these probs? Also, cam sensor, could cleaning that help?
I’m sorry for the long post and all the questions. It would help if the cheapest and easiest solutions were listed first, then I can eliminate them as I go. Then I will try to update on what I’ve done as I do it.
Dec. 7, 2016 – original post
Dec. 12, 2016 - APPS reset, will update after few days of driving
Dec. 16, 2016 - APPS reset didn't work, back to surging/lopeing issue, except now it will do it in gear while at full stop, before only did it in neutral or park.
Dec. 27, 2016 - Truck will now lope, hard, in Park, Neutral, and in Gear at Stop. Had a couple hard starts for first time in few weeks. And fuel gauge showed no fuel for about half hour one day.
Dec. 28, 2016 - Have been having some really hard starts lately. Took half hour first time, had fuel, had charge, cracked easily, it wasn't even as cold as it has been lately. did it to me again today, I noticed the Wait light went right out after I turned key to ON. so I cycled the key a couple more times as I always do. wouldn't start. so I bumped it then let it set and I could here the LP going, then stop. I hit the key and it finally starts. Could this be a sign my IP is going, or LP? And why'd my Wait light go out so quick?
Jan. 15, 2017 - Changed the alt to a 180 amp Nations unit, no big changes. Will install big line/LP relo kit soon.
Jan. 22, 2017 - Installed full big line kit and LP relocation kit. No change from alt install. Still has tough starts, and white smoke. Will check for leaks again.