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Old 08-25-2017, 10:37 AM  
MagicHef MagicHef is online now
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Car Help?
I know there are some knowledgeable car guys on here, and maybe someone can help. My 2001 MR2 Spyder has been running really rough, and I've been running in circles trying to fix it. The previous owner installed an aftermarket turbo with custom headers and exhaust, K&N intake, piggyback ECU, anti-knock system, and higher flow injectors. I've had it for 5 years and it has been working well until recently, so I don't know that the issues are directly related to any of the modifications.

So far I have replaced the fuel pump, fuel filter, fuel pressure regulator, fuel injectors, coils, spark plugs, camshaft sensor, crankshaft sensor, MAF sensor, and O2 sensors.

It was simply running poorly (sounded like it had a dead cylinder) and not throwing codes, but after replacing the camshaft sensor it started giving codes again. Now it gives codes for misfires on all 4 cylinders, plus random misfires, and says the system is too lean.

I am about out of ideas and hoping that I'm overlooking something obvious.
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Old 08-25-2017, 01:32 PM   #31
ptlyon ptlyon is offline
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Quote:
Originally Posted by kccrow View Post
Assuming you probably did if you checked the coils, but did you also check the ignition module?
What about the setzer valve?
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Old 08-25-2017, 01:34 PM   #32
kccrow kccrow is offline
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Quote:
Originally Posted by ptlyon View Post
What about the setzer valve?
is that part of the nanotube high displacement transmission control arm?
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Old 08-25-2017, 01:36 PM   #33
cooper barrett cooper barrett is offline
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Originally Posted by Buehler445 View Post
Not car. Sprayer, tractors, combine.
I was joking...
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Old 08-25-2017, 01:53 PM   #34
cooper barrett cooper barrett is offline
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Quote:
Originally Posted by kccrow View Post
Assuming you probably did if you checked the coils, but did you also check the ignition module?
Usually it it runs the Ign. module is good but it never hurts to check for opens or shorts.
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Old 08-25-2017, 01:53 PM   #35
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Originally Posted by ptlyon View Post
What about the setzer valve?
Brian or Scott
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Old 08-25-2017, 01:59 PM   #36
hometeam hometeam is online now
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I didnt read all the replies, but before doing all that crap I hope you checked for a boost leak.

Aftermarket turbo stuff of unknown install quality and those symptoms that would be my first thought. Too lean = unmetered air getting in.

A good rule of thumb is to never just throw parts at a car :/
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Old 08-25-2017, 02:05 PM   #37
kccrow kccrow is offline
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Quote:
Originally Posted by cooper barrett View Post
Usually it it runs the Ign. module is good but it never hurts to check for opens or shorts.
Probably a good idea. I had a Bonneville that did that... changed all the coils and still ran like ass and would just die out. Changed the IM and away she went.
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Old 08-25-2017, 04:42 PM   #38
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Originally Posted by Buehler445 View Post


Riiiiiiiiiiiiiiiiiiiight
Gotta expense a lot of gear to avoid taxes since the corn prices have skyrocketed.
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Old 08-25-2017, 05:27 PM   #39
Buehler445 Buehler445 is offline
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Gotta expense a lot of gear to avoid taxes since the corn prices have skyrocketed.

You have the chart upside down dogshizzle!
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Old 08-25-2017, 05:29 PM   #40
Buehler445 Buehler445 is offline
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Originally Posted by cooper barrett View Post
I was joking...
Heh. You're read again. I didn't do it.
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