RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

First start of day takes a long time

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Old 09-20-11, 06:32 AM
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jgr7
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Default First start of day takes a long time

08 RX350 57K miles never any problems. The RX cranks just fine but it takes 10 to 20 seconds to fire, like it has no fuel. After that it starts just fine until it sits for along time. Could this be the fuel pressure regulator not holding pressure? Or something else. Other than that it runs great, no missing, lots of power, never stumbles on hard acceleration and very smooth idle.
Thanks for any help
Jeff
Old 09-20-11, 06:52 AM
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draco
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My wife's Ford Focus had a similar issue where it would crank and not start for a while. After that initial start in the morning's it would be fine for the rest of the day. This was due to the car battery being on it's last legs and the battery needed to be replaced. I think that's the problem with yours. If it was the fuel pressure regulator not holding pressue you would most likely have troubles throughout the day. I would say get the battery tested and check it's "cold start" rating.
Old 09-20-11, 07:32 AM
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MC5Wes
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Default Starting

I had the same thing recently. Battery was dying. Changed it out. And now it starts fine.
Old 09-21-11, 03:46 PM
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madmax2k1
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Had the same thing happen to my wife's 07 RX350; I was worried it was the fuel injectors, the fuel pressure regulator, or the ignition module; expensive parts to replace.

Turned out to be the battery; I bought one from Sam's club and installed it myself. Total out of pocket expense $79.
Old 09-21-11, 04:10 PM
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RX330inFL
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Originally Posted by MC5Wes
I had the same thing recently. Battery was dying. Changed it out. And now it starts fine.
Will add my vote for battery.
Old 09-21-11, 08:39 PM
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jgr7
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OK thanks guys I will change out this weekend. Any of you guys use a portable jump starter with a reverse power accessory plug to keep all of your presets and window settings? I have used this before on a Honda and it worked like a champ just have to turn on the key plug it into the 12V power outlet and disconnect and change the battery, no lost memory functions or resetting any thing.
Jeff
Old 09-22-11, 12:31 AM
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RX330inFL
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Originally Posted by jgr7
OK thanks guys I will change out this weekend. Any of you guys use a portable jump starter with a reverse power accessory plug to keep all of your presets and window settings? I have used this before on a Honda and it worked like a champ just have to turn on the key plug it into the 12V power outlet and disconnect and change the battery, no lost memory functions or resetting any thing.
Jeff
AutoZone used something similar when installing my Duralast Gold some time back. Yes, would highly recommend.
Old 09-22-11, 06:25 AM
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kitlz
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Take the RX to the dealer for battery replacement. It's under warranty. They may prorate but mine never charged me anything.
Old 09-24-11, 09:23 PM
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jgr7
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I put in a new battery today, $80 Sams club and 15 min in the parking lot. Used my portable jump starter with the power outlet adapter to keep all of the presets and so I wouldn't have to reset all the windows. All went fine and will see if it starts normal tomorrow morning.
Jeff
Old 09-25-11, 03:26 PM
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jgr7
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Started just fine this morning, I will keep an eye on it and see what happens.
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