Mk2 Mr2 won't start.

MKhotbox · 11-06-2009, 05:46 PM

So here's ther deal, I have a video so I'll keep the text short.

I overheated my car after blowing some fuses causing my gauges not to work. It used to start but now the starter is blown, so now, nothing. There's pretty much two routes: 1. head gasket/mechanical 2. fuses/electrical well, three because it could be both.

mobil said it's an electrical problem, but they didn't do a full diagnostic, so they're kind of guessing. Let me know what you think. thanks!

p.s. if I can't fix it, I'm willing to trade for a good condition mk1. If you have something else you want to trade, let me know, I'm open. PM is best for me

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if that works or,

YouTube - MR2 problem help overheated

jeffbeezy73 · 11-06-2009, 06:12 PM

Do you have a friend near by with another MR2? You can try to swap out the ecu's to at least rule that out....since Mobil thinks its electrical? Sound like no fuel....and or a Cracked manifold? Cant hear real well on your vid. Hopefully someone has some better input. Guys can anybody make a suggestion for this fella? idk bro.

muffinman · 11-09-2009, 10:41 AM

sounds like a major vacuum leak.

have you replaced the blown fuses , cause i noticed your tach isn't working?

start with a compression test just to be safe.GL

shagy236 · 11-09-2009, 10:55 AM

Sounds like a huge vacuum leak, pull the int. manifold. check for broken gaskets

MKhotbox · 11-09-2009, 03:36 PM

hmmm... vacuum leak, I'll have to look into that haven't thought of that before. some people are saying it sounds like a blown head gasket, which makes sense w/ the overheating...but oil isn't muddy and doesn't have coolant in it.

as for the ECU, i have another mr2 friend nearby but I doubt he's willing to let me rip out his ECU

plus i'd definitely want to rule out some more stuff before I go for the ECU

and the fuses, I just realized something I said I blew fuses, but I checked every single one in my car with an ohmmeter and they're all fine. (except for the starter relay, btw WHERE IS IT ??

what else could shut down my gauges like that?

if my car didn't have a salvage title I'd just start replacing everything, including the motor but I don't want to put too much $$ into a salvage...

I think it might be time for a trade

MKhotbox · 11-09-2009, 03:48 PM

Quote:

Originally Posted by shagy236

Sounds like a huge vacuum leak, pull the int. manifold. check for broken gaskets

Hey guys, thanks a lot...sincerely

I'm looking at some videos of cars with vacuum leaks, and the sounds are eerily reminiscent of the hideous sounds coming from my car, so I think you guys are right about the vacuum leak, I'm definitely going to check into it. All I need now is a starter and I can get going trying to repair the leak. maybe I'll get to keep my mr2 after all.

you guys are geniuses...I guess I'll be there in a few years, I remember when I thought changing the oil was actually 'working on my car' LOL

MKhotbox · 11-09-2009, 03:58 PM

Quote:

Originally Posted by jeffbeezy73

Do you have a friend near by with another MR2? You can try to swap out the ecu's to at least rule that out....since Mobil thinks its electrical? Sound like no fuel....and or a Cracked manifold? Cant hear real well on your vid. Hopefully someone has some better input. Guys can anybody make a suggestion for this fella? idk bro.

don't mean to post way too much, but reading further on the vacuum leak, it can cause way to much air in the air/fuel mixture, and if it's really serious it can cause your car not to idle at all...in other words too much air in the air/fuel mixture means not enough fuel to keep the engine running...which makes sense why it would sound like no fuel...only thing is, i have a 1/4 tank

MKhotbox · 11-09-2009, 04:01 PM

damn...and I just realized this happened shortly after I SEAFOAMED my car...messing with the vacuum lines and the seafoam could have definitely triggered this

countyboy3188 · 11-09-2009, 10:03 PM

The starter relay is in the trunk next to the Ecu.

It sounds to me like you are getting no fuel. check and see if you can hear the fuel pump running when you turn the switch on.

If you have a buddy around you, you can take loose the bolt that has the line running to it on the middle of the intake manifold whlie he is cranking the motor and see if it sprays fuel.

But i still think it is a huge vac leak cause it does run for a min.

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11-06-2009, 06:12 PM	#2 (permalink)
jeffbeezy73 vroooom!!,,piish Join Date: Jun 2007 Location: Fort Worth, Texas Posts: 250 Thanks: 16 Thanked 3 Times in 3 Posts iTrader Rating: (21/96% )	Do you have a friend near by with another MR2? You can try to swap out the ecu's to at least rule that out....since Mobil thinks its electrical? Sound like no fuel....and or a Cracked manifold? Cant hear real well on your vid. Hopefully someone has some better input. Guys can anybody make a suggestion for this fella? idk bro.

11-09-2009, 10:41 AM	#3 (permalink)
muffinman U-P-G-R-A-Y-E-D-D Join Date: Jan 2008 Location: Sunny South Florida Posts: 5,878 Thanks: 53 Thanked 282 Times in 271 Posts Blog Entries: 1 My Google Map iTrader Rating: (2/100% )	sounds like a major vacuum leak. have you replaced the blown fuses , cause i noticed your tach isn't working? start with a compression test just to be safe.GL

11-09-2009, 10:55 AM	#4 (permalink)
shagy236 Some Skills Join Date: Oct 2009 Location: Tucson Az Posts: 77 Thanks: 0 Thanked 2 Times in 2 Posts My Google Map iTrader Rating: (0/0% )	Sounds like a huge vacuum leak, pull the int. manifold. check for broken gaskets

11-09-2009, 03:36 PM	#5 (permalink)
MKhotbox Some Skills Join Date: Oct 2009 Posts: 61 Thanks: 6 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	hmmm... vacuum leak, I'll have to look into that haven't thought of that before. some people are saying it sounds like a blown head gasket, which makes sense w/ the overheating...but oil isn't muddy and doesn't have coolant in it. as for the ECU, i have another mr2 friend nearby but I doubt he's willing to let me rip out his ECU plus i'd definitely want to rule out some more stuff before I go for the ECU and the fuses, I just realized something I said I blew fuses, but I checked every single one in my car with an ohmmeter and they're all fine. (except for the starter relay, btw WHERE IS IT ?? what else could shut down my gauges like that? if my car didn't have a salvage title I'd just start replacing everything, including the motor but I don't want to put too much $$ into a salvage... I think it might be time for a trade

11-09-2009, 04:01 PM	#8 (permalink)
MKhotbox Some Skills Join Date: Oct 2009 Posts: 61 Thanks: 6 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	damn...and I just realized this happened shortly after I SEAFOAMED my car...messing with the vacuum lines and the seafoam could have definitely triggered this

11-09-2009, 10:03 PM	#9 (permalink)
countyboy3188 got boost?? Join Date: May 2007 Location: Buchanan,GA Posts: 511 Thanks: 16 Thanked 8 Times in 8 Posts My Google Map iTrader Rating: (6/100% )	The starter relay is in the trunk next to the Ecu. It sounds to me like you are getting no fuel. check and see if you can hear the fuel pump running when you turn the switch on. If you have a buddy around you, you can take loose the bolt that has the line running to it on the middle of the intake manifold whlie he is cranking the motor and see if it sprays fuel. But i still think it is a huge vac leak cause it does run for a min.