Main Relay Issue
#1
Honda-Tech Member
Thread Starter
Main Relay Issue
I have a 91 crx Dx, which has a b16a I swapped in a few weeks ago, it had a d16a6 in it previously. I think my main relay is starting to go bad. On a hot day I would go out to start the car, turn the key to the on position, the cel would come on for roughly three seconds then shut off, which is normal while the fuel pump primes. Except, some times the fuel pump doesn't prime, when it doesn't prime, I don't hear the click under the dash when the fuel pump finishes priming. This issue started when I still had the d16 in the car. It's currently throwing a code 9 for a tdc sensor (bad connection to ecu).
Where is the main relay, how do I check to see if it is bad?
Where is the main relay, how do I check to see if it is bad?
#2
Honda-Tech Member
iTrader: (3)
Re: Main Relay Issue
I have a 91 crx Dx, which has a b16a I swapped in a few weeks ago, it had a d16a6 in it previously. I think my main relay is starting to go bad. On a hot day I would go out to start the car, turn the key to the on position, the cel would come on for roughly three seconds then shut off, which is normal while the fuel pump primes. Except, some times the fuel pump doesn't prime, when it doesn't prime, I don't hear the click under the dash when the fuel pump finishes priming. This issue started when I still had the d16 in the car. It's currently throwing a code 9 for a tdc sensor (bad connection to ecu).
Where is the main relay, how do I check to see if it is bad?
Where is the main relay, how do I check to see if it is bad?
#4
Re: Main Relay Issue
i got a 91 si ef and im haven difficulties with my b16 obd0 swap im getten no spark to the spark plug wires an main relay is bran new can any one help mi out with this gots me hella stuck on this
#6
Honda-Tech Member
Thread Starter
Thread jack for sure but, there should be two white wires for your dizzy, you might have them crossed. Switch them around and try to start it.
#9
Honda-Tech Member
iTrader: (3)
Re: Main Relay Issue
I have a 91 crx Dx, which has a b16a I swapped in a few weeks ago, it had a d16a6 in it previously. I think my main relay is starting to go bad. On a hot day I would go out to start the car, turn the key to the on position, the cel would come on for roughly three seconds then shut off, which is normal while the fuel pump primes. Except, some times the fuel pump doesn't prime, when it doesn't prime, I don't hear the click under the dash when the fuel pump finishes priming. This issue started when I still had the d16 in the car. It's currently throwing a code 9 for a tdc sensor (bad connection to ecu).
Where is the main relay, how do I check to see if it is bad?
Where is the main relay, how do I check to see if it is bad?
#10
Honda-Tech Member
Thread Starter
Oh, we both got a little confused. I was replying earlier to the thread jacker about the white wires. He has a crx si with a b16.
My crx Dx with b16a is fine. Except for the main relay cutting out intermittently. I did order a new main relay today. Should be here next week.
My crx Dx with b16a is fine. Except for the main relay cutting out intermittently. I did order a new main relay today. Should be here next week.
#11
Honda-Tech Member
Thread Starter
The d16 I had in it before ran fine except for the main relay not working properly when i would leave the car in a hot parking lot. I would have to and still do have to turn the key a few times when it doesnt want to work.
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AgentJam
Honda CRX / EF Civic (1988 - 1991)
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08-15-2004 03:07 PM