Strange starting ?
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Strange starting ?
Hi i have had my PSD for over a year now and it has always been weird when started . When i start it warm or cold the idle is all over the place , it seems like the truck is going to stall...it's like it coughing clung, clung, clung .then idles fine. Once in a blue moon it starts fine .. just starts the smooth . any idea's whats causeing this ?
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ISSUE:
The 7.3L Direct Injection Turbo (DIT) engines are built with 0.1016-0.8128mm (0.0040-0.032") clearance between the Camshaft Position (CMP) Sensor and the trigger wheel. At approximately 1.016mm (0.040") clearance, the sensor will fail to synchronize and result in a no run condition. Improper CMP clearance can be seen in the following six (6) symptoms:
1) Fault codes - incorrect synchronization count
2) Low RPM - fails to achieve rated speed for 2-3 minutes after extended cold soak
3) No start - after extended cold soak
4) Runs poorly cold - engine runs OK warm
5) Stall on deceleration - more pronounced cold
6) Starts, runs cold, dies warm, will not restart until cool
ACTION:
https://www.ford-trucks.com/tsb/full...p?tsb=03-21-23
The 7.3L Direct Injection Turbo (DIT) engines are built with 0.1016-0.8128mm (0.0040-0.032") clearance between the Camshaft Position (CMP) Sensor and the trigger wheel. At approximately 1.016mm (0.040") clearance, the sensor will fail to synchronize and result in a no run condition. Improper CMP clearance can be seen in the following six (6) symptoms:
1) Fault codes - incorrect synchronization count
2) Low RPM - fails to achieve rated speed for 2-3 minutes after extended cold soak
3) No start - after extended cold soak
4) Runs poorly cold - engine runs OK warm
5) Stall on deceleration - more pronounced cold
6) Starts, runs cold, dies warm, will not restart until cool
ACTION:
https://www.ford-trucks.com/tsb/full...p?tsb=03-21-23
Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
Is the ckeck engine light on when it's running. If so get the codes.
What oil are you using? How old is it?
Have you changed the fuel filter? Drain it every 5K miles?
Diesels are very particular about oil quality & type. Use a good diesel rated oil. I prefer synthetic but regular 'Dino' oil will do as long as it's clean and the additives aren't depleted (old). Fuel quality and clenliness has the same effect.
Check your air filter and intake for restrictions. Change the filter if you are not sure. Look down the intake piping at the turbo blades. The leading edges should be sharp with no dents or dings. Seach this site for pictures of what it should look like. The reson I bring this up is the stock air box is known to leak dirt past the filter and hurt the turbo impeller.
Give more details about your ride. Miles, Mods (chip, DP, exhaust, intake ect)maintenance history (if you know it) ect. The more info you give, the more detailed and accurate the answers will be.
What oil are you using? How old is it?
Have you changed the fuel filter? Drain it every 5K miles?
Diesels are very particular about oil quality & type. Use a good diesel rated oil. I prefer synthetic but regular 'Dino' oil will do as long as it's clean and the additives aren't depleted (old). Fuel quality and clenliness has the same effect.
Check your air filter and intake for restrictions. Change the filter if you are not sure. Look down the intake piping at the turbo blades. The leading edges should be sharp with no dents or dings. Seach this site for pictures of what it should look like. The reson I bring this up is the stock air box is known to leak dirt past the filter and hurt the turbo impeller.
Give more details about your ride. Miles, Mods (chip, DP, exhaust, intake ect)maintenance history (if you know it) ect. The more info you give, the more detailed and accurate the answers will be.
Last edited by Cuda_jim; Feb 18, 2007 at 09:03 AM.
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Umm i use 10w30 in winter and 15w40 in summer. Motorcrafts oil !! And i just changed fuel filter ,its has always done this with even when the oil is brand new i have 165,000 miles on it stock besides, no cat, and the BB in the fpr , it did it before then BB in the fpr .and still does . if i do change the CPS should i just get the stock one ?? i hear lots about the BLUE CPS ? Thanks for all the help
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I just tried to take the CPS out to check the things that the page above said to check but i couldn't the the 10mm bolt out for the CPS it was sezed i sprayed some w-d 40 on i'll try tommorow hopefully it will come out .Any other ideas to get it out ?
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Originally Posted by masterc16
I just tried to take the CPS out to check the things that the page above said to check but i couldn't the the 10mm bolt out for the CPS it was sezed i sprayed some w-d 40 on i'll try tommorow hopefully it will come out .Any other ideas to get it out ?
