93 ACURA iNTEGRA ls 1.8 No Spark, No Fuel, No Pulse - Team Integra Forums - Team Integra

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Old 04-17-2012, 04:12 PM   #1 (permalink)
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Cool 93 ACURA iNTEGRA ls 1.8 No Spark, No Fuel, No Pulse

I have same issue with mine.
Have No spark, No fuel, No injector pulse, No signal from distributor.
Fuel pump does not run connected to vehicle, but does when tested outside of the vehicle.
Vehicle Cranks

What have I done and two other Mechanics.
Replaced distributor (Complete Brand New)
Replaced Fuel Pump
Replaced Main Relay
Replaced ECU and verified circuits.
Verified Grounds
CEL Light comes on and stays on.
Verified Fuses and relays are good
Verified power to Main Relay and ECU.
No Codes

Whats Next to Try?
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Old 04-17-2012, 08:28 PM   #2 (permalink)
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check the ground wires... EVERYWHERE
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Old 04-18-2012, 10:52 AM   #3 (permalink)
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Default 93 ACURA iNTEGRA ls 1.8 No Spark, No Fuel, No Pulse

We did we are waiting for another wiring diagram to check again.
Eevrything checks out so far short of ripping the car apart.
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Old 04-18-2012, 06:25 PM   #4 (permalink)
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i had problems with mine when i swapped the dashboard out... turns out, these cars a extreamly finicky with ground connections... the problem lies in the harness or the connecting points.... especially if youve already changed evertything.... dont give up... youll find it
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Old 04-18-2012, 09:21 PM   #5 (permalink)
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Sry reposted below tested the ground wires at the computer and the ignition signal wire which is two yellow green wires for continuity and they are good just no signal from the computer itself.

Think we found it the computer is not sending a signal to the distributor unless we ground the wire out. problem is we checked all the grounds again to the computer and the main relay according to the diagram and they are all good no issues but the Yellow green wire which from the computer is not have any signal when trying to start the car.
So we checked the wire itself and it was ok.
So it has to be the computer I had rebuilt is bad.

Last edited by tward14; 04-18-2012 at 09:32 PM. Reason: Errors is description
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Old 04-18-2012, 09:29 PM   #6 (permalink)
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Default No Spark No Fuel Frustrated Update

We did find that if we ground out the yellow green wire which is the one that has the input signal to the distributor we get spark when cranking.

so we did some ground testing via an oem wiring diagram and everything shows to be ok.

Ground good to main relay
Ground good to Computer
Yellow Green wires for ignition signal from computer to distributor continuity is good so wire is not bad.

So it has to be the new computer(Rebuilt) is no good no signal being sent.
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Old 04-18-2012, 09:29 PM   #7 (permalink)
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"ground the wire out"

What are you talking about?
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Old 04-18-2012, 09:35 PM   #8 (permalink)
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Quote:
Originally Posted by MeltMan View Post
"ground the wire out"

What are you talking about?
There is a yellow with green stripped wire from the computer to the distributor.
If you take a test light and ground it to your battery then neg and poke it it the backside of the port then try and crank I get spark again.

Thought it would be ground issue but they have been tested and reseated etc and they are good.
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Old 04-19-2012, 09:12 AM   #9 (permalink)
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What happens if you take your test light and ground it to the engine while cranking with that green/white wire?

Does it still flash? If not you should make sure your main engine ground (transmission ground) is connected. Your car isn't going to run if the engine isn't grounded.
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Old 04-19-2012, 11:13 AM   #10 (permalink)
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Smile 93 ACURA iNTEGRA ls 1.8 No Spark, No Fuel, No Pulse

Its fixed there was no signal from the computer because the people that rebuilt the computer forgot to solder the power circuit.

As far as what caused it all indications was bad distributor had severly corroded wires inside behind the coil.
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Old 04-21-2012, 09:22 AM   #11 (permalink)
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nice!!!! happy tegging
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