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Feels like throttle slams shut.

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Old Jun 27, 2009 | 02:26 AM
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Default Feels like throttle slams shut.

Can anyone someone take a look at this log ang tell me why this thing is shutting down at 5000 rpm? Log file is attached. Notice that tps is at 100% but the rpm is not going up.
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File Type: hpl
fuel%20cut%20out%20run2[1].hpl (209.4 KB, 69 views)
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Old Jun 27, 2009 | 03:17 AM
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Is this from the car in your signature?

Something is way off....the first obvious thing that comes to my mind is when you go wot the map should go to 100 kpa or so right away and then keep climbing depending on the set-up.

Manual cable throttle body right? Does the cable pull the tb actuation 100% open? More details?

Look's like it needs some cooling assistance as well.

Last edited by black98ws6ta; Jun 27, 2009 at 03:23 AM.
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Old Jun 27, 2009 | 10:52 AM
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Yea, thats true, the map starts to rise up then jumps back down to 60kpa like the blade is closing. Fast 90/90 setup. I think something might be up with my injectors.
Fuel pressure is rock solid, but I'm noticing its going lean.

Last edited by SuperC1; Jun 27, 2009 at 11:06 AM.
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Old Jun 27, 2009 | 12:43 PM
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Has the car ran right before and your chasing a problem, or a new set-up your getting worked out? Do you have a boost guage on the car? Maybe verify that the car is going back into more vaccume at WOT like the map shows. What does the map read when the key is on and not running? What map? What operating system(2 bar, 3bar)?
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Old Jun 27, 2009 | 01:14 PM
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Originally Posted by black98ws6ta
Has the car ran right before and your chasing a problem, or a new set-up your getting worked out? Do you have a boost guage on the car? Maybe verify that the car is going back into more vaccume at WOT like the map shows. What does the map read when the key is on and not running? What map? What operating system(2 bar, 3bar)?
New turbo setup, 2bar olsd, map reads 51 key on eng off. Boost reads zero, cant get there. Had a bad leak on the hot side and fixed it, now it just shuts down like its out of fuel. Fuel pressure is at 62psi when this happens.

Last edited by SuperC1; Jun 27, 2009 at 01:43 PM.
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Old Jun 27, 2009 | 01:37 PM
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You have something wrong..it should read around 100 kpa. I dont know if you have a bad map sensor, bad wiring, or the wrong one for the calibration. Is the car 2-3 bar?

The weird map reading may be from having both pids open, I would just stick to kpa, and use your boost gauge for actual pressure.
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Old Jun 27, 2009 | 02:16 PM
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Originally Posted by black98ws6ta
You have something wrong..it should read around 100 kpa. I dont know if you have a bad map sensor, bad wiring, or the wrong one for the calibration. Is the car 2-3 bar?

The weird map reading may be from having both pids open, I would just stick to kpa, and use your boost gauge for actual pressure.
I have previous logs with it pulling all the way to 7000 at 3psi, with a big leak on the hot side. Now that I've fixed the leak it won't rev past 4000. its like something shuts off the fuel.
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Old Jun 27, 2009 | 02:20 PM
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Originally Posted by SuperC1
I have previous logs with it pulling all the way to 7000 at 3psi, with a big leak on the hot side. Now that I've fixed the leak it won't rev past 4000. its like something shuts off the fuel.
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Old Jun 27, 2009 | 03:11 PM
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You may be blowing out the spark. It should be noted that you are trying to run before you can walk. You should start by getting the car to idle and run correctly. Then gradually tune as you give it more and more throttle.
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Old Jun 27, 2009 | 04:20 PM
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Originally Posted by 98Z28CobraKiller
You may be blowing out the spark. It should be noted that you are trying to run before you can walk. You should start by getting the car to idle and run correctly. Then gradually tune as you give it more and more throttle.
It idles perfectly, no spark blow out, solved that problem way long ago.
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Old Jun 27, 2009 | 04:26 PM
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AR3934 race plugs gapped at .025
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Old Jun 27, 2009 | 04:40 PM
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I ran into the same crap the other night. took me all night to figure out that the rubber elbow coming off my turbo inlet was getting hot and sucking to the turbo. felt like the car was running out of gas. turns out it was running out of air!! haha
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Old Jun 28, 2009 | 11:57 AM
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Originally Posted by SD99TA214
I ran into the same crap the other night. took me all night to figure out that the rubber elbow coming off my turbo inlet was getting hot and sucking to the turbo. felt like the car was running out of gas. turns out it was running out of air!! haha
Just found my issue, you hit the nail on the head SD99TA, my pt88 was locked up. That explains it, no air means no go. This thing is only six months old and has less than 20 miles on it. There was plenty of oil, so I'm really stumped now, and pissed caused I wasted an entire day trying to figure out what was wrong and now it looks like I'm fixn to have to spend some more money. Does it ever end??
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Old Jun 28, 2009 | 12:00 PM
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Damn.....your welcome and, sorry.

thats not as cheap of a fix as mine but, good luck.
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Old Jun 28, 2009 | 01:43 PM
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Originally Posted by SuperC1
New turbo setup, 2bar olsd, map reads 51 key on eng off. Boost reads zero, cant get there. Had a bad leak on the hot side and fixed it, now it just shuts down like its out of fuel. Fuel pressure is at 62psi when this happens.
This is the least of your worries but your scanner isn't setup right. Delete the MAP sensor from the TABLE view and then add a MAP sensor back in. You will be able to choose 2bar MAP. That's what you need.
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Old Jun 28, 2009 | 05:15 PM
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If you bought it new PTE has a one year warranty. I can usually hear when a turbo locks up..no more whistle noise.
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Old Jun 28, 2009 | 07:21 PM
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Originally Posted by Frost
This is the least of your worries but your scanner isn't setup right. Delete the MAP sensor from the TABLE view and then add a MAP sensor back in. You will be able to choose 2bar MAP. That's what you need.
It says 2bar map on the table.. prolly just not on the graph.
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Old Jun 28, 2009 | 07:24 PM
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Originally Posted by black98ws6ta
If you bought it new PTE has a one year warranty. I can usually hear when a turbo locks up..no more whistle noise.
Yea, I bought it brand new from forced inductions, about six months ago. Can't believe it's taken this long to get this thing running and now I back to square one.
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Old Jun 28, 2009 | 11:51 PM
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Originally Posted by black98ws6ta
If you bought it new PTE has a one year warranty. I can usually hear when a turbo locks up..no more whistle noise.
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