Bad turbo? - Ford Powerstroke Diesel Forum

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post #1 of 16 Old 04-08-2013, 03:57 PM Thread Starter
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Bad turbo?

I think i blew/ started to blow my turbo..school me. I think my turbo is on the fritz.... What do I look for? What are the symptoms?

When I go to accelerate I can mash the pedal to the floor and it takes 4-5 seconds before it will go. When it goes it goes, but it takes forever! At cruising speeds 45-70 in my area depending on the road, it jumps and bucks like crazy.
I'm hearing a slightly different whistle from it than normal.
Also, when I shut the truck of, there is a horrible knocking/grinding noise real quick like, like a fast 3 count.
I have really bad compressor surge too.... A wicked wheel is on its way....



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #2 of 16 Old 04-08-2013, 06:27 PM
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Check all your boots on your intake and intercooler tubes there are six boots if any are cracked, tore, or loose it will effect your performance. I had surging problems on my truck I put the wicked wheel in my turbo and it went away. Also pull your air intake tube off your turbo and check to see if you have any play in your shaft a tiny bit of play is okay but if there is alot of play it's time to think about rebuilding or buying a new turbo.
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post #3 of 16 Old 04-08-2013, 06:36 PM Thread Starter
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Well, I went and checked the turbo out. The fins looked great. No pitting. There was zero play in the shaft and it was spinning freely. The boots all looked good. They're dirty and oily but I believe it's from my oil leak. I have full oil, the HPOP reservoir is full. Over half a tank of fuel. New batteries. New fuel filter. Air filter is clean. I'm at a loss!



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #4 of 16 Old 04-08-2013, 07:02 PM
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Oil on or around the boots is normal its from the crankcase breather that connects to your intake tube. If you don't have any play in your turbo I doubt your turbo is bad. Do you have a guage for boost and if so what kind of numbers you getting. Does your truck only jump and buck when driving at hwy speeds.
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post #5 of 16 Old 04-08-2013, 07:08 PM Thread Starter
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Quote:
Originally Posted by Ford_man View Post
Oil on or around the boots is normal its from the crankcase breather that connects to your intake tube. If you don't have any play in your turbo I doubt your turbo is bad. Do you have a guage for boost and if so what kind of numbers you getting. Does your truck only jump and buck when driving at hwy speeds.
No, I don't have the gauges yet...... No it's not just at highway speeds. It'll do it sometimes on takeoff. Take about 4-5 seconds to go, then act like its outta fuel or oil. At highway cruise speeds its intermittent.



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #6 of 16 Old 04-08-2013, 07:30 PM
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The jumping and bucking is probably caused form a bad CPS cam position sensor had the same problem on my truck 25 dollars at autozone. How many miles you have on your truck.
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post #7 of 16 Old 04-08-2013, 07:43 PM
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I saw you other post about you Exhaust Back Pressure sensor code are you still throwing that code. If the sensor is bad that could be causing your turbo lag, your back pressure valve might not be opening all the way.
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post #8 of 16 Old 04-09-2013, 05:12 AM Thread Starter
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Well, it has a new sensor on it.... And it's not issuing like the valve is closed.... I have it unplugged.... It should be open. At least I made sure it was before I unplugged



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #9 of 16 Old 04-09-2013, 05:12 AM Thread Starter
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I just installed a new cps Sunday. I rolled over 291,100 yesterday



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #10 of 16 Old 04-09-2013, 10:50 AM
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Have you pulled the valve covers and inspected the UVCH (under valve cover harness) that connect to your injectors. They come loose and the wires sometimes crack.

Last edited by Ford_man; 04-09-2013 at 11:26 AM.
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