2004 3,000 rpm cap and Mass Air Flow Sensor Error

11718 Views 5 Replies 4 Participants Last post by pho_dog, Feb 3, 2018

nathanj

Discussion Starter · Jan 3, 2013

Hello,
I have a 2004 toyota Sienna. the first time i put the key in it runs for one second then dies. the second attempt to start the car is successful but i will not go above 3,000 rpm.
I get error codes P0102 for the mass air flow sensor if i run it un plugged the car drives the same. I have replaced the Mass air flow sensor twice. I have also replaced the H02S in Bank 1 Sensor 2, as that was an error code i got.

Today when i went to make the video for this post i received 7 error codes they are P0037, P0057, p0101, p0102, p0103, p0113, p0113 p0101

I have reset these codes several times by removing the negitive bat cable for 15 min. each some variance of the above codes.

I have tried a used computer from another 2004 sienna, it would start and die like as usual but the second attempt to start the car would not start the car, so it would just try and try.

any ideas?

see videos

Thanks in advance,
Nathan

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fibber2

· #2 · Jan 5, 2013

To begin with, stop disconnecting the battery as a way to clear codes. Your code reader most likely has a code clearing function - use it! These vehicles do not have a stand-alone IAC (Idle Air Control), but instead use a learned feature for electronic throttle plate setting and fuel metering. Every time you wipe the ECU, you set yourself back a few squares in getting the basic functionality (starting and idling) ironed out.

Begin by cleaning the crud from the throttle plate and throttle body with a solvent dampened rag. Follow the instruction in this TSB.

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nathanj

Discussion Starter · #3 · Mar 9, 2013

This turned out to be a combo of issues. I have had this van for 3 months and had nothing with trouble. I purchased it from West Coast auto online DON'T DO THAT, ANYONE. they or the previous owner had soldered the main fuse-able link in the fuse box. (900 bucks for me to have fixed) also the shop i took it to said the ground was not good so they replaced the ground for the battery. once those two items were fixed i had to replace the Mass air flow sensor because apparently it got fried. after this i got a code for only the H02 Sensor so i had that replaced and that fixed it. That's it! well for a few months anyway i just had the EFI relay replaced. and so far(one day out) its working like a charm.
if it last for a few months ill try to figure out why its a little shaky on the highway at 70 mph but ill just be happy that it starts for a while.

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EthanSienna

· #4 · Apr 25, 2014

nathanj said:
Hello,
I have a 2004 toyota Sienna. the first time i put the key in it runs for one second then dies. the second attempt to start the car is successful but i will not go above 3,000 rpm.
I get error codes P0102 for the mass air flow sensor if i run it un plugged the car drives the same. I have replaced the Mass air flow sensor twice. I have also replaced the H02S in Bank 1 Sensor 2, as that was an error code i got.

Today when i went to make the video for this post i received 7 error codes they are P0037, P0057, p0101, p0102, p0103, p0113, p0113 p0101

I have reset these codes several times by removing the negitive bat cable for 15 min. each some variance of the above codes.

I have tried a used computer from another 2004 sienna, it would start and die like as usual but the second attempt to start the car would not start the car, so it would just try and try.

any ideas?

see videos

Thanks in advance,
Nathan

CHECK fuse

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EthanSienna

· #5 · Apr 25, 2014

I had the exact same problem. The fuse is call EFI2 fuse located in the engine compartment fuse box

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pho_dog

· #6 · Feb 3, 2018

Have been having the same problem. Just checked and EFI 2 fuse is blown.

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