82 corvette crossfire help
Thread Starter
Instructor
Joined: Mar 2016
Posts: 204
Likes: 2
I just verified the fuel pressure im getting 12-13 psi at the fuel filter and do u think im getting short to the map because im geting volts when key to the on position but once i start it to run there no numbers i can make a video if u want lmk
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
PLEASE type your comments correctly.
I do not read 'text' type writing and I have a hard enough time trying to decipher what you are saying due to many replies have no punctuation or capitol letters to let me know when you stop and start new sentence.
I will post a photo of my custom fuel pressure set-up for a Cross-Fire tomorrow
DUB
I do not read 'text' type writing and I have a hard enough time trying to decipher what you are saying due to many replies have no punctuation or capitol letters to let me know when you stop and start new sentence.
I will post a photo of my custom fuel pressure set-up for a Cross-Fire tomorrow
DUB
Thread Starter
Instructor
Joined: Mar 2016
Posts: 204
Likes: 2
Dub
Im from hawaii and only speak pidgin english so bare with me
I measured the fuel pressure at the fuel filter and im getting 12-13 psi so that should be good also im saying with key to the on position im getting readings on scanner
Map 104
Map v 5.0
But when the car is running im getting
Map 10
Map v .00
So question is when the car is running am i getting a short also if u would like to reach me direct your more then welcome to call my cell
Im from hawaii and only speak pidgin english so bare with me
I measured the fuel pressure at the fuel filter and im getting 12-13 psi so that should be good also im saying with key to the on position im getting readings on scanner
Map 104
Map v 5.0
But when the car is running im getting
Map 10
Map v .00
So question is when the car is running am i getting a short also if u would like to reach me direct your more then welcome to call my cell
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
I can respect you speaking in Pidgin English. Speaking is one thing...typing out what you want others to understand is another.
Thank you for your last reply. It is easier for me to read.
Let me check on something. I am at home and away from my service manual.
Will get with you tomorrow.
DUB
Thank you for your last reply. It is easier for me to read.
Let me check on something. I am at home and away from my service manual.
Will get with you tomorrow.
DUB
Thread Starter
Instructor
Joined: Mar 2016
Posts: 204
Likes: 2
I put smog pump back in and hooked back up and it ran for a little while
Drove car over 40 mph to try and get car to reset but it got worst
Now im gettting 3 codes
Code 24 vss circuit
Code 22 open tps circuit
Code 32 egr system
Now car will now idle on its own without help
Drove car over 40 mph to try and get car to reset but it got worst
Now im gettting 3 codes
Code 24 vss circuit
Code 22 open tps circuit
Code 32 egr system
Now car will now idle on its own without help
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
PLEASE type your comments correctly.
I do not read 'text' type writing and I have a hard enough time trying to decipher what you are saying due to many replies have no punctuation or capitol letters to let me know when you stop and start new sentence.
I will post a photo of my custom fuel pressure set-up for a Cross-Fire tomorrow
DUB
I do not read 'text' type writing and I have a hard enough time trying to decipher what you are saying due to many replies have no punctuation or capitol letters to let me know when you stop and start new sentence.
I will post a photo of my custom fuel pressure set-up for a Cross-Fire tomorrow
DUB
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Thread Starter
Instructor
Joined: Mar 2016
Posts: 204
Likes: 2
Dub
Running when i got back
Tps. .60
Map .00-1.40 ish
Terry
12-13 at the filter still made gauge between tbs ywt know anyplace where there sold
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
https://www.corvetteforum.com/forums...re-help-4.html pm buccaneer he might be able to help.your car is running,, not well but your getting there.the vids help tell the story a lot.did you say that you changed your fuel pump.?you have 12-13 psi at the fuel filter.you may be a little low .crossfires like 13- 14 between the tbs.starting to wonder if your pressure is off.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
THANKS....I needed to see that.
Your IAC value is way off.... 142 is almost at the very end of its range which is 0 to 144. A major problem here.
You MAP at IDLE should be 1.4 volts approx. At the very beginning of this video the MAP showed to be 1.23 volts and then went to 0...This is a problem.
Not knowing what you did to the EGR system..other than what you showed in the past posts.....so I can not comment on that.
DUB
Your IAC value is way off.... 142 is almost at the very end of its range which is 0 to 144. A major problem here.
You MAP at IDLE should be 1.4 volts approx. At the very beginning of this video the MAP showed to be 1.23 volts and then went to 0...This is a problem.
Not knowing what you did to the EGR system..other than what you showed in the past posts.....so I can not comment on that.
DUB
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
Also your TPS need to be at .52 volts when idling.....NOT .60 volts.
There is a tolerance of .075 volts +/- and you are out of that range.
Also...with the engine OFF but ignition ON....and the scanner connected.....what is you IAC value???
I have so many numbers that run through my head...I can not remember if the IAC valve at that time should be 144 or 160. Either way....your IAC valve at 142 is really high and it is telling me your IAC's are almost open all the way allowing air in.
DUB
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
AS for your TPS. Pull back on your throttle linkage when it is running and see if the number drops back to .52 volts. It could be that air is passing by the throttle plates when running and opening up slightly...and I am not there to feel the shafts of your throttle bodies and see if they are worn out and move.
And for right now.....DO NOT touch or tamper with your throttle body idle screws that are welded in place...you can open up a can of worms. In the facotry manual there is a specific procedure for BALANCING these two throttle bodies....EVEN THOUGH I know some people use a piece of paper to set them. TRUST ME...I have the manometer and you would be amazed on how well that tool does the job on getting the two throttle bodies set correctly. And I have used the paper method and then checked it with my manometer afterwards ..so I am commenting from experience that I will ONLY use my manometer to set these throttle bodies. But do as you choose.
DUB
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
Hopefully your manual comes in very soon. I am STILL concerned about your MAP volts. There is s test you can perform when the engine is running and using a hand vacuum pump.
DUB
Last edited by DUB; Aug 14, 2016 at 06:35 PM.