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Engine - General, Exhaust & Induction Topics about the general engine items, exhaust system discussed here & Improving the intake tract - air filter to intake valve.

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post #1 of 38 Old 10-31-2019, 11:39 AM Thread Starter
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Boost bleed valve

How do u make a bleed valve for running more than 15 psi of boost?
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post #2 of 38 Old 10-31-2019, 11:59 AM
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Re: Boost bleed valve

well, you shouldn't unless you're adding extra fuel, cuz 2 things:
1. stock ecm won't add fuel past 14.x psi
2. stock ecm won't see 'real' boost P if yur using a bleed valve on the MAP, thus won't even add correct fuel up to 14.x psi

result = melted piston(s) &/or cracked ring(s)
{AMHIK}

still want to know ?

a better question might be -
what is the easiest and safest way to pick up xx Hp on my current (description) setup 'cuz I'm hoping to achieve (describe goals) ?
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post #3 of 38 Old 10-31-2019, 07:43 PM Thread Starter
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I have the supporting modifications to run more than 15psi including: 3 bar map, computer, injectors, turbo, intercooler, ect. I keep running into the same body issue even after changing the engine harness and redoing the vaccuum lines. I am out of ideas on fixing it correctly. The codes it shows is intake air temp, speed sensor, and purge solenoid. I'll try two of the three but until then
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post #4 of 38 Old 10-31-2019, 09:09 PM
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The same body issues???
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post #5 of 38 Old 10-31-2019, 09:37 PM
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Re: Boost bleed valve

OP need a wideband o2 sensor.
chromguy likes this.
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post #6 of 38 Old 11-01-2019, 12:35 AM Thread Starter
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Quote:
Originally Posted by NAJ View Post
The same body issues???
I'm not trying to be a jerk or ect, but this is my last attempt at trying to fix it correctly before I put a 2.4 in it. Take it as u may, I just want it to work correctly and do what it should do. It needs the stage 3 cam and valve seals but one issue at a time.
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post #7 of 38 Old 11-01-2019, 07:07 AM
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Re: Boost bleed valve

the fact that you're asking about a bleed valve when you claim to have a 3-bar map & corresponding ECM & injectors suggest that you don't understand how the EFI system works

I suggest you don't do any boosted runs until you figure out the problem

if you cant figure out stock TD wiring & ECM how do you think you're gonna pull off a 2.4 swap ?

this is a good book
https://www.biblio.com/book/how-tune...n/d/1194609720
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post #8 of 38 Old 11-01-2019, 09:40 AM Thread Starter
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Quote:
Originally Posted by detobias View Post
the fact that you're asking about a bleed valve when you claim to have a 3-bar map & corresponding ECM & injectors suggest that you don't understand how the EFI system works

I suggest you don't do any boosted runs until you figure out the problem

if you cant figure out stock TD wiring & ECM how do you think you're gonna pull off a 2.4 swap ?

this is a good book
https://www.biblio.com/book/how-tune...n/d/1194609720
I have found information on the 2.4 swap that is actually useful, if you claim to have any let me know. However, I am going to explore the suggestions from NAJ. Let me know if you have any actual suggestion other than insulting comments.
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post #9 of 38 Old 11-01-2019, 10:23 AM
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Re: Boost bleed valve

Easy gents,

shelby3322, detobias is giving tough love to enforce his point of making sure everything is tuned right before jacking up the boost, otherwise the result is a blown motor, not if but when is the question after that. Air charge issues will affect mid-throttle fuel/air, this should be rectified before boost tweaking. Purge less important. Speed sensor causes stall on deceleration.

A/F Wideband is a must!

If you have air charge/speed sensor/purge codes, all three are simple. Check sensors using a multi-meter (assume NAJ has you hooked up with the data you need, if not let me know), check purge using a 9V battery and blow through. Once all three confirmed OK, check continuity to LM/SMEC for each sensor/solenoid wire. A pinout of your year LM/SMEC will allow you to accomplish this. Speed sensor and air charge has a signal wire, signal ground wire which can be traced to the computer. See links below.

Understanding The Chrysler ECU

Air Charge Temperature Sensor - MiniMopar Resources

Speed/Distance Sensor - MiniMopar Resources

With that out of the way, boost control should be computer controlled these days, but otherwise read:

Mini-Mopar Turbo Performance

Mini-Mopar Turbo Performance

Mini-Mopar Turbo Performance
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post #10 of 38 Old 11-01-2019, 10:58 AM Thread Starter
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Quote:
Originally Posted by yellonoma View Post
Easy gents,

shelby3322, detobias is giving tough love to enforce his point of making sure everything is tuned right before jacking up the boost, otherwise the result is a blown motor, not if but when is the question after that. Air charge issues will affect mid-throttle fuel/air, this should be rectified before boost tweaking. Purge less important. Speed sensor causes stall on deceleration.

A/F Wideband is a must!

If you have air charge/speed sensor/purge codes, all three are simple. Check sensors using a multi-meter (assume NAJ has you hooked up with the data you need, if not let me know), check purge using a 9V battery and blow through. Once all three confirmed OK, check continuity to LM/SMEC for each sensor/solenoid wire. A pinout of your year LM/SMEC will allow you to accomplish this. Speed sensor and air charge has a signal wire, signal ground wire which can be traced to the computer. See links below.

Understanding The Chrysler ECU

Air Charge Temperature Sensor - MiniMopar Resources

Speed/Distance Sensor - MiniMopar Resources

With that out of the way, boost control should be computer controlled these days, but otherwise read:

Mini-Mopar Turbo Performance

Mini-Mopar Turbo Performance

Mini-Mopar Turbo Performance
Thank you for providing helpful information. I aan not a tough love type person, just trying to fix ab ongoing issue.
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post #11 of 38 Old 11-01-2019, 11:01 AM
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Has anybody read his other thread?
His issue is ignition related and is not an overboost issue.
I already posted instructions on how to proceed with diagnostics.
If the OP is having issues with a 2.2L and does not agree with or is not willing to diagnose the issue a 2.4L swap is not going to fix that, what happens when he has issues with that engine, a swap to another setup???
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post #12 of 38 Old 11-01-2019, 11:20 AM Thread Starter
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Quote:
Originally Posted by NAJ View Post
Has anybody read his other thread?
His issue is ignition related and is not an overboost issue.
I already posted instructions on how to proceed with diagnostics.
If the OP is having issues with a 2.2L and does not agree with or is not willing to diagnose the issue a 2.4L swap is not going to fix that, what happens when he has issues with that engine, a swap to another setup???
I am going to explore your suggestions when I am able, as previously mentioned. If that does or does not check out I'll to the next suggestion. I can provide an entire parts list it that would be more helpful.
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post #13 of 38 Old 11-01-2019, 02:23 PM
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Let's start with the basics and move on from there.
Couple more questions...
1)Has there ever been a Code 45 stored in memory?
2) Is the power loss/check engine lamp illuminated or does it come on when the problem occurs?
3)The air charge and coolant temp sensor codes, have you cleared those to see if they return?
4)Just out of curiosity does this problem occur at the same boost level all of the time or is it random?
5)What is boost reading, generally when the problem occurs?

)

) Hi
,
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post #14 of 38 Old 11-01-2019, 05:19 PM Thread Starter
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Quote:
Originally Posted by NAJ View Post
Let's start with the basics and move on from there.
Couple more questions...
1)Has there ever been a Code 45 stored in memory?
2) Is the power loss/check engine lamp illuminated or does it come on when the problem occurs?
3)The air charge and coolant temp sensor codes, have you cleared those to see if they return?
4)Just out of curiosity does this problem occur at the same boost level all of the time or is it random?
5)What is boost reading, generally when the problem occurs?

)

) Hi
,
1) Did not see code 45. I've only ran the. diagnostics once since the new to me harness. (Checked and rechecked)
2) Varies, turns on and at random. Off when the car starts generally and turns on later.
3) No
4) same level everytime
5) 14/15
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post #15 of 38 Old 11-01-2019, 09:26 PM
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Re: Boost bleed valve

Quote:
Originally Posted by NAJ View Post
what happens when he has issues with that engine, a swap to another setup???
Part out, and when people don't buy his stuff, crush it.
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