89 Honda CRX MAP Sensor...HELP PLEASE!
01-20-2009, 10:32 AM
#1
Junior Member
Thread Starter
Join Date: Jan 2009
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
89 Honda CRX MAP Sensor...HELP PLEASE!
Alright I'll get straight to the point...
I just installed a TD04H turbo on my Honda CRX which I am only running 3 pounds of boost atm and I have a ECU error code (3) which is the MAP sensor. I'm just wondering, do I have to get a new MAP sensor and if so what should I look for?
Also another question, I have a 93 Honda Civic parts car which had the exact same turbo kit on it, and it has a MAP sensor on the motor...will that MAP sensor work? Or is there a specific one I have to get for a Honda CRX?
I just installed a TD04H turbo on my Honda CRX which I am only running 3 pounds of boost atm and I have a ECU error code (3) which is the MAP sensor. I'm just wondering, do I have to get a new MAP sensor and if so what should I look for?
Also another question, I have a 93 Honda Civic parts car which had the exact same turbo kit on it, and it has a MAP sensor on the motor...will that MAP sensor work? Or is there a specific one I have to get for a Honda CRX?
01-20-2009, 11:03 AM
#3
Junior Member
Join Date: Jan 2006
Location: Klamath Falls, Oregon, USA
Posts: 880
Likes: 0
Received 0 Likes
on
0 Posts
Re: 89 Honda CRX MAP Sensor...HELP PLEASE!
One thing with hondas is they were not factory turbo cars. There maps, pcv, ... were not designed for boost. Are you obd 0 or obd1. Also what motor.
01-20-2009, 11:51 AM
#6
Keyboard Humorist
Join Date: May 2002
Location: Granada Hills, Ca, USA
Posts: 9,814
Likes: 0
Received 9 Likes
on
7 Posts
Re: 89 Honda CRX MAP Sensor...HELP PLEASE!
How many psi are you boosting?
Did you add check valves on the vacuum line going to the map sensor?
Is your ECU chipped with a turbo program?
The stock MAP is -CAPABLE- of reading 9~11psi boost. The problem is that the stock ECU doesn't understand when the MAP sends boost info so it throws a code.
Adding in-line vacuum check valves hides the boost from the MAP and you won't get an ECU light/code. you then need to adjust fuel for the boost by using an FMU.
A chipped ECU with a turbo program on it is far better as it allows the ECU to use the boost information from the MAP sensor and then make fuel adjustments.
Did you add check valves on the vacuum line going to the map sensor?
Is your ECU chipped with a turbo program?
The stock MAP is -CAPABLE- of reading 9~11psi boost. The problem is that the stock ECU doesn't understand when the MAP sends boost info so it throws a code.
Adding in-line vacuum check valves hides the boost from the MAP and you won't get an ECU light/code. you then need to adjust fuel for the boost by using an FMU.
A chipped ECU with a turbo program on it is far better as it allows the ECU to use the boost information from the MAP sensor and then make fuel adjustments.
Last edited by 4drEF; 01-20-2009 at 12:06 PM.
01-20-2009, 11:59 AM
#7
Junior Member
Thread Starter
Join Date: Jan 2009
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
Re: 89 Honda CRX MAP Sensor...HELP PLEASE!
No I didn't add a check valve, I'm thinking of ordering one right now. I am only running 4 PSI for now until I do a few extra things. Also, I do not have my ECU chipped. Also, what ratio FMU should I use?
Last edited by ShayMK; 01-20-2009 at 12:15 PM.
Thread
Thread Starter
Forum
Replies
Last Post
