Need help to resolve Cold Start Problem
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Driver School Candidate
Joined: Oct 2014
Posts: 1
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From: Selangor
Need help to resolve Cold Start Problem
My Lexus Rx350 (2007) having problem starting the car when the engine is cold or switch
off more than 1-2 hours. I need to crank the car at least 2-3 times to get the engine run.
Once the engine run, i have no problem restarting the car with a single crack.
Regards Henry
off more than 1-2 hours. I need to crank the car at least 2-3 times to get the engine run.
Once the engine run, i have no problem restarting the car with a single crack.
Regards Henry
Lexus Fanatic
Joined: Oct 2003
Posts: 94,328
Likes: 236
From: Virginia/D.C. suburbs
Welcome to CL. 
Could be any one of a number of things. Weak fuel pump, clogged injectors, coolant-temperature sensor, throttle-position sensor, or others. Is the CHECK ENGINE light on?...that could signal a bad sensor, or a series of tests that need to be for that computer-code.
Could be any one of a number of things. Weak fuel pump, clogged injectors, coolant-temperature sensor, throttle-position sensor, or others. Is the CHECK ENGINE light on?...that could signal a bad sensor, or a series of tests that need to be for that computer-code.
Lead Lap
Joined: Mar 2011
Posts: 537
Likes: 83
From: Texas
Without seeing the fuel trim numbers just after cold start, it will be hard to diagnose. It's normal for the engine to have to crank over a slight bit extra after sitting for a while if you immediately turn key and try and start. Fuel pressure takes about a 1/4 second to get up to normal after sitting a while. That said, you could have a lot of things causing this. Hard to say without looking at the live data when cranking up.
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redsue97
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Feb 16, 2018 06:44 PM
