2002 4Runner Deckplate Mod
11-17-2002, 07:36 PM
#21
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Originally posted by Jay
I dont see how the missing elbow could cause the check engine light to come on.
Jay
I dont see how the missing elbow could cause the check engine light to come on.
Jay
11-17-2002, 07:58 PM
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Pulling the EFI fuse cleared everything up for me yesterday. I was in a similar situation, I had a check engine light immediately after I did the deckplate mod. The MAF was plugged back in before I fired it up, so I'm not sure what really caused it, but at any rate pulling the fuse for about 1 minute reset everything.
Incidentally, on my 98 the EFI is a 15 amp fuse. It very well could have changed for the newer models, but just thought I'd mention it since you said you pulled a 20A fuse.
Good luck!
Tom
Incidentally, on my 98 the EFI is a 15 amp fuse. It very well could have changed for the newer models, but just thought I'd mention it since you said you pulled a 20A fuse.
Good luck!
Tom
11-18-2002, 10:50 AM
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Check Engine Light/EFI Fuse on 2002
Just back from Toyota-
1. The problem was a very small leak between the supercharger and the throttle-body- at the TRD paper gasket- due to heat, shrinkage, etc. Verry small. Toyota fixed it in about 15 minutes.
2. On the 2002 4Runner, Toyota added several components that prevent reseting the Check Engine Light by pulling the EFI fuse. However, pulling the fuse WILL reset the fuel settings in the computer, so that the computer reestablishes driving patters in conjunction with the grade of fuel used. So for example, if you cant get premium fuel and have to use 87 or 89 octane for a tank or two (ie traveling in mexico and no 91 available), pull the EFI fuse for 30 seconds during fill up. This will cause the computer to reset the fuel settings, and cause adjustments to help prevent pinging during the timw you have to use lower grade fuel.
3. On the 2002 4Runner, the engine computer is much more sensiftive to fuel levels, driving styles, etc. Consequently, it is POSSIBLE, not certain, but possible, that you could run 89 or 87 octane fuel with a supercharger, and never experience ping. Because the 2002 was the last of the 3rd Gen, Toyota will never get a chance to test this through R&D. I have been runnin only 91 octane, but I am going to try several tanks of 89. If no ping, I will drop to 87, and test it there.
More later.
1. The problem was a very small leak between the supercharger and the throttle-body- at the TRD paper gasket- due to heat, shrinkage, etc. Verry small. Toyota fixed it in about 15 minutes.
2. On the 2002 4Runner, Toyota added several components that prevent reseting the Check Engine Light by pulling the EFI fuse. However, pulling the fuse WILL reset the fuel settings in the computer, so that the computer reestablishes driving patters in conjunction with the grade of fuel used. So for example, if you cant get premium fuel and have to use 87 or 89 octane for a tank or two (ie traveling in mexico and no 91 available), pull the EFI fuse for 30 seconds during fill up. This will cause the computer to reset the fuel settings, and cause adjustments to help prevent pinging during the timw you have to use lower grade fuel.
3. On the 2002 4Runner, the engine computer is much more sensiftive to fuel levels, driving styles, etc. Consequently, it is POSSIBLE, not certain, but possible, that you could run 89 or 87 octane fuel with a supercharger, and never experience ping. Because the 2002 was the last of the 3rd Gen, Toyota will never get a chance to test this through R&D. I have been runnin only 91 octane, but I am going to try several tanks of 89. If no ping, I will drop to 87, and test it there.
More later.
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