#$&*# Fuel pump relay
How could you have done all this work:
And failed to ever pop off the cover and look at your fuel relay? How many shops did it go to and no one EVER checked that for you?
This isn't a new issue. This is a horrible flaw in the car. I agree the 2010s SHOULD have come with an updated relay, but really, why didn't you check? There's nothing simpler. There are stickies on both here and EvoXForums, it's a well known topic, it's even been covered on Fox News. Bill O'Reilly had an expose on it; it was quite informative and well received by the right wing.
Even the left wing has covered it; Rachel Maddow had a big piece on it, where she showed people how to do it, live, on air; she popped off the plastic thing, she pointed it out, and went through the steps.
Even the FOREIGN media has covered it. Al Jazerra has a news bulletin on it, right after a rant on Israel. They interrupted "Bombing Alli's Israel Rant" for a piece on the Mitsubishi Evo fuel relay. They likened it to a batch of bad relays in some suicide bomber's jackets, leading to some really awkward and hilariously timed explosions. I'm surprised you missed it.
Long story short, how did you NOT check it?
2010 Phantom Black MR-T, Cobb AP, UIP, TBE, drop-in, E85, custom tune, 370 hp/390 lbft TQ, 7.7@89 1/8th mile. (Calcs to 12.1@~112 in the 1/4 mi.)
This isn't a new issue. This is a horrible flaw in the car. I agree the 2010s SHOULD have come with an updated relay, but really, why didn't you check? There's nothing simpler. There are stickies on both here and EvoXForums, it's a well known topic, it's even been covered on Fox News. Bill O'Reilly had an expose on it; it was quite informative and well received by the right wing.
Even the left wing has covered it; Rachel Maddow had a big piece on it, where she showed people how to do it, live, on air; she popped off the plastic thing, she pointed it out, and went through the steps.
Even the FOREIGN media has covered it. Al Jazerra has a news bulletin on it, right after a rant on Israel. They interrupted "Bombing Alli's Israel Rant" for a piece on the Mitsubishi Evo fuel relay. They likened it to a batch of bad relays in some suicide bomber's jackets, leading to some really awkward and hilariously timed explosions. I'm surprised you missed it.
Long story short, how did you NOT check it?
the only TSB I can find (https://docs.google.com/fileview?id=...ZGQzMWVi&hl=en) that called for the "blue" specifies a cold start condition (<21*F), it calls for three relays to be replaced with the blue due to a cold condensation issue but it does not even address the fuel pump relay at location 27X. Mitsubishi is releasing this blue relay to the dealers in the most affected areas first. It seems the manufacture of the green (Panasonic?) will stop production of in Aug 2010 most likley being the only reason Mitsu is switching to the blue.
More info than you ever wanted to know:
Looks like you are good to go with either the green or blue relay
More info than you ever wanted to know:
FTW
The Green is a Panasonic made 35 amp relay.
http://panasonic-denko.co.jp/ac/e/co...x.jsp?c=search
Type in ACM32221 there and you get this page...
http://panasonic-denko.co.jp/ac/e/co...IVE_RELAY_DATA
The following PDF indicates that Panasonic will Discontinue this relay in august 2010... hence possibly necessitating the switch to the blue relay...
http://panasonic-denko.co.jp/ac/e_do...ech_eng_cm.pdf
Further investigation and comparison reveals that these two relays are very similar in terms of endurance and performance. Both have identical rated service lives.
There are some diffrences: Compare to Omron Spec Sheet:
http://www.ic-on-line.cn/IOL/viewpdf...-R_1244032.htm
However the Green relay is of flux resistant construction, im not sure if the blue is or not...
The green relay is a faster relay with an activation time of 10ms max. The Blue relay is about 2x slower at 20ms max. Release times are identical at 10ms.
Conclusion:
If you must have JDM YO! Go green....
If you want to save a few pennies go Blue...
Other than that there is no reason to think that one will perform any worse than the other, unless proven otherwise.
The Green is a Panasonic made 35 amp relay.
http://panasonic-denko.co.jp/ac/e/co...x.jsp?c=search
Type in ACM32221 there and you get this page...
http://panasonic-denko.co.jp/ac/e/co...IVE_RELAY_DATA
The following PDF indicates that Panasonic will Discontinue this relay in august 2010... hence possibly necessitating the switch to the blue relay...
http://panasonic-denko.co.jp/ac/e_do...ech_eng_cm.pdf
Further investigation and comparison reveals that these two relays are very similar in terms of endurance and performance. Both have identical rated service lives.
There are some diffrences: Compare to Omron Spec Sheet:
http://www.ic-on-line.cn/IOL/viewpdf...-R_1244032.htm
However the Green relay is of flux resistant construction, im not sure if the blue is or not...
The green relay is a faster relay with an activation time of 10ms max. The Blue relay is about 2x slower at 20ms max. Release times are identical at 10ms.
Conclusion:
If you must have JDM YO! Go green....
If you want to save a few pennies go Blue...
Other than that there is no reason to think that one will perform any worse than the other, unless proven otherwise.
that being a new 2010 MR-T one of the green ones was the infamous FPR, after not having problems on the dyno or at the strip (I do have a Wide Band) the FPR issue went to the back of what I euphemistically call my mind. Shops involved will remain unnamed.I am not convinced that the lean run was caused by the black FPR, after some reading I am thinking (there I go trying to think again
) that I experienced a fuel pick-up problem, an issue I was not aware of until today.Folks don't be an idiot like me, check the relay for your own piece of mind and race with >1/2 tank of gas just in case.
Car seems fine but I know the combustion pressures must have exceeded design limits during the lean run, I am hoping that some part like a rod or piston was not weakened, only time will tell I guess.
Oh, and thank you for your constructive criticism.
Paul
Has anyone gotten theirs from the stealership? I want to check on Monday if they have it in stock but was also thinking of getting if from mitsubishiparts.net. They ship fast and I ahve used them in the past, I got my order the same week.
If you search around this forum I'm sure you find some posts about problems people have especially when racing on circuits. The design of the tanks are so crappy that when you have less than half a tank of gas, you'll have some chances of the fuel pump not being able to pick up fuel properly. The remedy is to purchase a fuel collector or replace the fuel tank with the RS version.
Yes, let us persue this. I am having trouble finding anything thing on fuel tank or fuel pick up using the search function.
Some sort of documentation or experiences with the problem and possible fixes would be more useful to me than pictures inside a tank. I still not sure if there is a fuel pickup problem nor what possible fixes are available, remember my lean run misfire was under acceleration not side load.
I am out to make a plug check just now, later
Paul
Thank you for the offer, my request was not aimed at you specifically but to the general audience.
Some sort of documentation or experiences with the problem and possible fixes would be more useful to me than pictures inside a tank. I still not sure if there is a fuel pickup problem nor what possible fixes are available, remember my lean run misfire was under acceleration not side load.
I am out to make a plug check just now, later
Paul
Some sort of documentation or experiences with the problem and possible fixes would be more useful to me than pictures inside a tank. I still not sure if there is a fuel pickup problem nor what possible fixes are available, remember my lean run misfire was under acceleration not side load.
I am out to make a plug check just now, later
Paul
i know the 2G eclipse had the same problem. RRE had modified the gas tanks for customers that tracked their cars. i wonder if the same can be done for these tanks. or just get a RS tanks.
THANKS
As it sits (MXP Cat back, RRE Rally test pipe, UICP, Cosworth panel filter, DW 1000cc, boost pill) :
CA 91 Octane: Cobb Stage 2 map; 324 hp/299ft-lbs, custom tune; 336 hp/324 ft-lbs.
E85: Cobb Stage 2 E85 map; 348 hp/368 ft-lbs, custom tune; 370 hp/392 ft-lbs.
The E85 pull was on a Dynapack due to time constraints, I'm told the torque reads high but the HP figures are comparable
Tuner(s) will remain anonymous 'till tune is finished in a couple weeks, both great guys that know there stuff with the Evo X and I do not want to hurt anyone's feelings nor lose a valuable resource until I am satisfied.
Last edited by kmart888; Mar 21, 2010 at 12:13 PM.


