I replaced the [head gasket](/topics-head-gasket-honda/) ...

I replaced the [head gasket](/topics-head-gasket-honda/) on my 04 civic it was running before now no fuel Mechanic's Assistant: Is this your first time dealing with this issue? What size is your engine? Yes 1.7 Mechan...

I replaced the [head gasket](/topics-head-gasket-honda/) on my 04 civic it was running before now no fuel Mechanic's Assistant: Is this your first time dealing with this issue? What size is your engine? Yes 1.7 Mechanic's Assistant: What year is your Civic? 2004 Mechanic's Assistant: Are you fixing your Civic yourself? What have you tried so far? Ive checked all ive checked all connections but no [fuel pump](/topics-fuel-pump-honda/) Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Fuel pump is new

Automotive Expert
Hello and welcome! My name isCustomerand I can assist you with your question. I am a former master tech and I have worked in this field for 20 years. I specialize this type of problem you are experiencing so I am confident I can assist with this issue. I am sorry you are having this issue and I understand this can be frustrating so I will try my best to help. While we are working on this issue together, please allow up to 30 minutes (or more) between replies as I might be online helping other customers or offline spending time with family. Please understand I can only see what is on this page and what you have already shared with me. Please keep in mind, I don’t know the history of the vehicle and I don’t know your mechanical ability, however, I will try my best to help. The phone call prompts are automatic and are coming from the web site, not from me. If you would like to speak on the phone, please request a phone call on your end and I will call you right away. I am going to start by asking some basic questions to get up to caught up to where you are at with this situation so I can assist you in a timely manner. I appreciate your time and patience while we are working together on this issue. My goal is to provide you with a pleasant experience and ensure all of your questions are answered. Please reply back at anytime so I can fully answer or address any questions or concerns you may have. _Please download or save any documents or images I may send you as they will automatically expire after 7 days._ Can I start by getting your first name? Thank you

Automotive Expert
Thank you Jake. So now it cranks but does not start correct? No fuel as in no fuel pump operation? Does it have spark while cranking?

Has spark no fuel pump operation I replaced relay no change
Automotive Expert
Ok does the relay click when you turn the key on or when cranking it? Have you checked for codes in the computer? Are you sure the fuses are good?

Fuse is good I hear clicking no have not checked codes
Automotive Expert
Ok there should be two main relays. Do both of them click when the key is turned on? Does the check engine light come on with the key on for 2 seconds for a bulb check?

but cel stays onMy scanner tells me unable to establish connection
Automotive Expert
Thank you for that information. I thought the main relay could do this but looking at the wiring diagram, I would recommend to check the inputs going into the computer directly with the key on. It could be a bad ECM or possibly a wiring issue preventing the ECM from powering up. A bad or insufficient input to the computer can and will cause this issue. In addition, if the reference voltage is shorted out that the computer sends out to the sensors due to a bad sensor or a wiring issue, it can and will short out the ECM making it look bad. Your best bet would be to start by confirming all powers and grounds going into the ECM with the key on and then making sure the reference voltage leaving the ECM going to the sensors under the hood (TPS, MAP etc..) is not shorted out for any reason in any way and then replace the ECM as needed. It has been a pleasure working with you so far. Keep in mind this is a “starting point”. We can always continue as needed at a later date or at any time. Feel free to run some tests and reply back for further assistance as needed. Glad I can help. Please let me know if you have any further questions. Thanks and have a great day!

No relay click
Automotive Expert
I would recommend to check the inputs to the relay to determine what is missing. Power or ground. This is going to be done with the key on.

Got it running but stuck in limp mode won’t go over 2500 rpm
Automotive Expert
Glad to hear it. And how about the communication issue with the computer? Do you have communication or not?

Automotive Expert
Ok your going to need to get communication back with the computer first before going any further. This could be a faulty ECM.

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