Car died while driving?
#26
Hard Parker
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I already have a fuel pressure gauge that I can hook up inline with it.I just dont have fuel pressure tester to check it at the rail. I will hook it up and see what happens. I already have a snap on DMM. But it doesnt have the ability to check duty cycle. I dont really want to go out and buy another one. I can probably get a noid light for less. I let you know what I figure out once I get it set up.
When you say disconnect the fuel pump and crank it and see if pressure drops. Won't the pressure drop from the return line anyway while cranking?
When you say disconnect the fuel pump and crank it and see if pressure drops. Won't the pressure drop from the return line anyway while cranking?
#27
Hard Parker
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After disconnecting the exhaust. The car now turns over a lot faster but it still wont start. Still working on checking the injector pulse. Im pretty sure its not getting gas. Because after I disconnected the exhaust I could smell the carb cleaner that I had sprayed in there. But I can't smell any gas out the exhaust.
#28
Hard Parker
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O.k I got the car started with starter fluid it died shortly after. I'm not getting any injector pulse. Is there a certain ground for the ecu that might have gone bad. Or did the ecu just go out?
#33
Hard Parker
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Im not sure if its getting enough fuel. I have already bought a new fuel filter that I will install at the same time that I put on the fuel pressure gauge. I think even though the fuel pump is working that maybe it isn't supplying enough fuel pressure for the injectors to fire. I'm picking up a noid light here in a little bit so I will know for sure if the ecu is grounding out the injectors.
O.k I wasn't sure about the injectors. I will find out here shortly exactly whats going on.
Thanks for all the help guys.
O.k I wasn't sure about the injectors. I will find out here shortly exactly whats going on.
Thanks for all the help guys.
Last edited by hahaha38; 03-09-11 at 07:13 PM.
#34
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Im not sure if its getting enough fuel. I have already bought a new fuel filter that I will install at the same time that I put on the fuel pressure gauge. I think even though the fuel pump is working that maybe it isn't supplying enough fuel pressure for the injectors to fire. I'm picking up a noid light here in a little bit so I will know for sure if the ecu is grounding out the injectors.
Thanks for all the help guys.
Thanks for all the help guys.
#35
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The pressure will not drop while cranking if the injectors are not opening. That's what the pressure regulator is for. Return line is after the regulator.
PS- A timing light will let you know if it's sparking when cranking from inside the car. It's easier that way to check for spark. You will also notice if the engine dies because of spark loss.
Last edited by Clubuser; 03-10-11 at 11:17 AM.
#36
Hard Parker
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O.k finally getting back to working on this car. I hooked up a fuel pressure gauge. I have close to 40psi while cranking it doesnt drop off. So I assume the fuel pump is still good. I grounded out the injectors manually and it tried to start. I then took a l.e.d probe and checked the wires for the injectors from the ecu. The ecu is not grounding out the injectors. So does this mean the ecu is bad or is there a ground or something that I need to clean/fix?
#37
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O.k finally getting back to working on this car. I hooked up a fuel pressure gauge. I have close to 40psi while cranking it doesnt drop off. So I assume the fuel pump is still good. I grounded out the injectors manually and it tried to start. I then took a l.e.d probe and checked the wires for the injectors from the ecu. The ecu is not grounding out the injectors. So does this mean the ecu is bad or is there a ground or something that I need to clean/fix?
#40
Hard Parker
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Correct. There is power at the wire. The l.e.d when hooked up doesnt flash. This means the ecu is bad correct? Also what could fry the ecu? I was talking to a guy and he said the only thing could fry the ecu would be the oil metering pump. Is this correct?
Another thing I found out today. The ecu in the car is a N351 but the original ecu was a N353. Does this make a difference? The ecu was replaced before I bought the car previously.
Another thing I found out today. The ecu in the car is a N351 but the original ecu was a N353. Does this make a difference? The ecu was replaced before I bought the car previously.
Last edited by hahaha38; 03-19-11 at 02:12 AM.
#41
Hard Parker
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O.k so I got a hold of the PO and I was able to get the original ecu that was from the car. The ecu was replaced due to water damage. I reinstalled the computer and the car fired up and starting running. It has some issues because the ecu I got from him is bad but the car now runs.
What would cause the driver circuit to go out on the other ecu? Do I need to replace the omp? I dont want to drive the car because I'm afraid that this ecu will burn up as well.
Thanks for all the help so far. Appreciated.
What would cause the driver circuit to go out on the other ecu? Do I need to replace the omp? I dont want to drive the car because I'm afraid that this ecu will burn up as well.
Thanks for all the help so far. Appreciated.
#42
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O.k so I got a hold of the PO and I was able to get the original ecu that was from the car. The ecu was replaced due to water damage. I reinstalled the computer and the car fired up and starting running. It has some issues because the ecu I got from him is bad but the car now runs.
What would cause the driver circuit to go out on the other ecu? Do I need to replace the omp? I dont want to drive the car because I'm afraid that this ecu will burn up as well.
Thanks for all the help so far. Appreciated.
What would cause the driver circuit to go out on the other ecu? Do I need to replace the omp? I dont want to drive the car because I'm afraid that this ecu will burn up as well.
Thanks for all the help so far. Appreciated.
#43
Hard Parker
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I dont think the car is throwing any codes but let me go check it out and see. What would cause the ecu to burn up? With the old ecu back in that is water damaged the oil pressure gauge doesnt work and some other things.
#44
Hard Parker
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The car isnt throwing any codes. O.k so I found a good N353 ecu but they want $250 for it. My car was running on a N351 and to buy one of those its only$150. Can I get away with just putting in another N351 ecu or should I get the convertible N353 ecu? Also where can I get a new oil metering pump from?
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