2005 Toyota Sequoia. Proactively replaced fuel pump. Will only start and run for a few seconds. Fuel leaving tank under pressure but none in return line. New MAF sensor did not help.
Enter your Toyota question at the top of this page and click Get An Answer.
Tell us how quickly you want your Toyota question answered.
Connect with your Toyota mechanic via online chat or telephone call.
2005 Toyota Sequoia. Proactively replaced fuel pump. Will only start and run for a few seconds. Fuel leaving tank under pressure but none in return line. New MAF sensor did not help.
Hello and welcome to ExpertHelp.com! My name is Elixir Cada and I'm going to do everything in my power to answer your question to your full satisfaction!
Before we get started, I want to remind you ExpertHelp.com is an independent professional support company. We do not have any affiliation with **Toyota** nor are we paid to provide support on their behalf. However, we have helped hundreds of customers with similar questions and believe we can help you too. OK, let’s get started!
I’m available to chat now. Please let me know that you are ready by posting a response. I’ll leave my chat session open for the next 15 minutes or so and wait for your reply. If I don’t catch you this time, please respond with a few times (including your timezone) that work best for you and we can connect then.
Hi Tony,
Check or replace the fuel pump relay first. Seems like the power from your newly installed fuel pump is tripping making the engine not to stay running. If the relay is ok then next to check is the temparature sensor. A faulty temperature sensor will mis-report to the PCM and not enrich the mixture at cold start-up thus causing the engine to immediately stumble. There are other obvious possibilities include the idle air control valve might be causing the issue as well.
If you can get hold of a scan tool or any repair shop in your location that scan the vehicle, please have it scanned so that it can point you to the correct issue.
Let me know if you have further questions.
Hello and welcome to ExpertHelp.com! My name is Charles Totherow and I'm going to do everything in my power to answer your question to your full satisfaction!
I’m available to chat now. Please let me know that you are ready by posting a response. I’ll leave my chat session open for the next 15 minutes or so and wait for your reply. If I don’t catch you this time, please respond with a few times (including your timezone) that work best for you and we can connect then.
Although it is a little cumbersome, you could try to rule in or out a fault in the fuel delivery system by having an assistant quickly introduce "starter fluid" into the intake right at the point (very quickly, of course) that the engine starts to cut out. Of course, you will do this experiment on a cold day. If the introduction of starter fluid keeps the engine running, during these stumbles, that would point toward a fuel delivery issue although the delivery problem could itself be the result of a faulty engine temperature sensor.
A faulty temperature sensor will mis-report to the PCM and not enrich the mixture at cold start-up thus causing the engine to immediately stumble
There are other obvious possibilities include the idle air control valve
Sorry please continue elixer
Please let me know if there is anything else I can help you with?
Kevin
Toyota Mechanic
Whether you have a quick question while preparing your taxes, troubleshooting a computer problem, or need to hire an attorney, ExpertHelp is the most convenient and affordable way to connect with the right service professional to get the job done.
ExpertHelp has been in business since 2011, is an A+ Rated Better Business Bureau accredited member, and offers a 100% satisfaction guarantee on every question you ask!