89 procharged corvette struggling
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Intermediate
Joined: Mar 2020
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89 procharged corvette struggling
I’ve got a ProCharged 89 that I’ve made a few posts on now but I’m still struggling with the car. When the car runs the idle is not consistent at all and will sound like it’s about to die but then it’ll rev up the try to die again. The whole time it’s smoking out the rear. The smoke is White/ grey but it’s not coolant or oil burning. It’s got a new maf sensor, idle air control valve, and a new 02 sensor along with about 100 other things. And at this point I’m lost as what to do. Tomorrow I’m going to pull the plugs and see the condition they’re in and see if they’re dirty or not. If they are dirty I’ll clean them and see if that helps the idle. Also I don’t know if it matters or not but when you put the car into gear the rpm drops a few hundred and almost dies. Thanks for any responses
Safety Car
Joined: Aug 2009
Posts: 3,752
Likes: 276
From: Melbourne, Victoria, Australia
I’ve got a ProCharged 89 that I’ve made a few posts on now but I’m still struggling with the car. When the car runs the idle is not consistent at all and will sound like it’s about to die but then it’ll rev up the try to die again. The whole time it’s smoking out the rear. The smoke is White/ grey but it’s not coolant or oil burning. It’s got a new maf sensor, idle air control valve, and a new 02 sensor along with about 100 other things. And at this point I’m lost as what to do. Tomorrow I’m going to pull the plugs and see the condition they’re in and see if they’re dirty or not. If they are dirty I’ll clean them and see if that helps the idle. Also I don’t know if it matters or not but when you put the car into gear the rpm drops a few hundred and almost dies. Thanks for any responses
Was this a complete procharger kit? with all the parts and instructions?
The smoke has to be oil or water maybe both? what temperature was it when you shot the video?
How long has the blower been on the car, has it ever run right what boost are you running?
You may need to do the base idle setup, what have you set your timing at?
Is the oil filler cap clean? dipstick show clean oil?
I know the maf does not like heat even after an intercooler, i have mine before the blower
I have a FMU to raise fuel pressure per psi boost and a msd ignition retard, is very quick and easy to damage ring landings.
I would suggest contacting blowerworks, see link below, they will know your issue quickly by experience.
And point you in the right direction, we are just guessing without knowing the background of the install.
http://www.blowerworks.net/
Last edited by gerardvg; Sep 4, 2020 at 09:13 PM.
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
I’ve got a ProCharged 89 that I’ve made a few posts on now but I’m still struggling with the car. When the car runs the idle is not consistent at all and will sound like it’s about to die but then it’ll rev up the try to die again. The whole time it’s smoking out the rear. The smoke is White/ grey but it’s not coolant or oil burning. It’s got a new maf sensor, idle air control valve, and a new 02 sensor along with about 100 other things. And at this point I’m lost as what to do. Tomorrow I’m going to pull the plugs and see the condition they’re in and see if they’re dirty or not. If they are dirty I’ll clean them and see if that helps the idle. Also I don’t know if it matters or not but when you put the car into gear the rpm drops a few hundred and almost dies. Thanks for any responses
I have to tell you, unfortunately "NEW" doesn't mean "Good"
I would suggest checking all the free stuff first. What is your timing set at? What is the IAC steps at Idle, fuel pressure Vac line On/Off (do you smell gas?).
What is the ECM telling you? Is the CTS showing what would appear to be proper temps? Is it showing rich/lean? What are your BLMs?
Is everything in the intake track sealed?
Videos are great, but data logs are better.
I have seen a handful of these be a ruptured FPR diaphram, others Bad MAF, and some CTS issues.
Last edited by KyleF; Sep 8, 2020 at 08:19 AM.
Thread Starter
Intermediate
Joined: Mar 2020
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I would have to take a look at the timing as well as the IAC but fuel pressure with the line off is around 50 but the needle jumps up and down constantly so its hard to tell. The exhaust smells like gas. Unfortunately I dont have any way to get data logs as I dont have any of the equipment I need to plug in to the ecu.
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
Does it run better with the line off?
Does the vac line smell like gas?
Racer
Joined: Feb 2000
Posts: 488
Likes: 28
From: Peabody MA
We need a little more info about the setup. How is the "tune" being handled? Is this an old school setup with stock injectors, an FMU and stock ECM? Or do you have larger injectors with an ECM tune?
Having access to data logging is extremely important as is an air/fuel meter.
Having access to data logging is extremely important as is an air/fuel meter.
Thread Starter
Intermediate
Joined: Mar 2020
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Its an old school setup so to speak still using the stock injectors and the stock ecm along with an fmu. I am aware I really need access to data logs but im just not sure how to do it or what I need. I did find a shop relatively close to where I live that does tuning on old computers and Im hoping to take it over there soon.
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Thread Starter
Intermediate
Joined: Mar 2020
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We need a little more info about the setup. How is the "tune" being handled? Is this an old school setup with stock injectors, an FMU and stock ECM? Or do you have larger injectors with an ECM tune?
Having access to data logging is extremely important as is an air/fuel meter.
Having access to data logging is extremely important as is an air/fuel meter.
Thread Starter
Intermediate
Joined: Mar 2020
Posts: 46
Likes: 5
In all seriousness, this is a BIG problem. Without this, you end up with a laundry list of "new" parts each time you have an issue and end up spending way more than a Cable, Laptop, and Free software. I would bet you have a laptop setting around that will do the deal or could pick one up cheap on FB marketplace or Craigslist.
With the Vac line off, fuel pressure should be steady.
Does it run better with the line off?
Does the vac line smell like gas?
With the Vac line off, fuel pressure should be steady.
Does it run better with the line off?
Does the vac line smell like gas?
Even with the vac line off the needle jumps. the Vac line doesn't smell like gas and if I remember correctly the car doesn't run better with it off
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
You are absolutely correct but im not quite sure what I need. I looked into a cable but there were about 600 different options that scared me off a little.
Even with the vac line off the needle jumps. the Vac line doesn't smell like gas and if I remember correctly the car doesn't run better with it off
Even with the vac line off the needle jumps. the Vac line doesn't smell like gas and if I remember correctly the car doesn't run better with it off
Any Windows Laptop. Seriously, anyone made in the last 10 years will do what you need it to do for sure. Probably even older.
Software: A lot of folks around here use TunerPro RT, WinALDL, and there are others. You will need to get an ADX and a XDF file that matches your ECM and code for TunerPro. This software(s) is free.
I am concerned about your fuel pressure jumping around. Hopefully its small movements, but if the VAC line is off and you have PSI movements >3PSI I would start questioning the fuel supply as well.
Last edited by KyleF; Sep 8, 2020 at 03:50 PM.