mr_ed
Toolbag
Hello all. I have a quick question for the Mitsu gurus here. It's a friend's 2007 Galant that I'm helping him with (I know, not a Monty. I'm sorry...this is just a last-ditch effort), and I'm getting stumped and figured I'd at least ask here since you all have been great with Montero knowledge. I've been searching the web plenty but most of the threads on mainstream (fixya, cargurus, etc...) just have the same basic initial checks, then dead-end.
I'm trying to save my buddy and his wife some money, as they are a young couple who are trying to pay down some college debt, and also expecting their first kiddo any day now and this is their only car. They're using my truck in the interim. Anyway, he drove the Galant into work last week, parked, and when he went to leave for lunch the car cranked and cranked, but would not start.
It is a 2007 Galant, 170k miles, 2.4 liter inline 4, ran perfectly up till last week. Here is a list of checks I have performed, to the best of my ability:
-Engine codes. No check engine light, no codes. What, exactly, would you say it is ya do here, CEL??
-Timing. Belt is intact. Timing is on the money.
-Fuel. Has over half a tank. Disconnected line at the rail, get plenty of fuel gushing out while cranking. Disconnected plug at pump, have power while cranking (it is my understanding that the pump is not powered until you crank; the pump does not operate when the key is simply in "ON". I verified this on my 2.5 Gen Montero...I know, different vehicles, but the general layout of the pumps are the same, so I'm making an educated assumption here). Cracked open the intake and shot a couple squirts of MAF cleaner in while the car was cranking...figured if there was a fuel issue, the car would at least try when the MAF cleaner hit it. Nothing.
-Air. Air cleaner is in good condition. Also, car ran great, then wouldn't at all...more like a switch was thrown.
-Spark. Here's where these danged fly-by-wire vehicles these days really grind my gears. Nowhere near straightforward. It's coil-on-plug, so you can't just pop a plug out, ground it out with pliers, and check spark. I checked all appropriate fuses, none blown. I checked each coil connector and I have power on the power wire at each coil. Checked cam and crank position sensor connections. 12 volts at each sensors power wire, 5 ish volts at each signal wire which is what I think I'm supposed to see there, based on the best I could gather from the interwebs.
What I have changed:
-Cam position sensor. I do not have the requisite oscilloscope for proper testing of these sensors, but I figured the cam and crank sensors were the most likely culprits...they both are common failure items whose sudden failure can single-handedly stop the engine from operating. Cam sensor was right up top, so I started with it. No joy.
-Crank position sensor. Still no joy. Inspected the entire timing belt while I was in there...everything looked great, good tension, timing has not jumped. Barred the engine over, compression feels good. I have not checked compression with my gauge though...not sure I could get my tester screwed in to a spark plug hole down at the bottom of the 8 inch pits they put them in.
I'm not sure what all I can check further. I don't have a fuel pressure tester, so I can't say for sure that it's getting the proper PSI at the rail, but based on what I got spurting out of the line when I disconnected it, I'm not sure shotgunning a fuel pump would do anything. Does any of you folks have any ideas as to where I could go next? ECU maybe? I've never experienced a failed ECU, but what I've heard, they will tend to throw codes around on their way out.
I apologize for the long post, and for it not being about a cool Mitsubishi Montero. I'm just running out of ideas and I know there are some guys on here who are legit savvy with Mitsu engineering. If I can't figure it out, I'm afraid I'm going to have to just send my buddy to the mechanic. I really don't want him to have to do that, cuz there's only two mechanic shops on the island (we live on Kodiak Island) and one of the shops just got busted for dealing meth out the back, so the other shop has jacked their prices up to optimum ********** levels since they are now the only game in town.
Thanks in advance for any insight you guys might have!
Ed
I'm trying to save my buddy and his wife some money, as they are a young couple who are trying to pay down some college debt, and also expecting their first kiddo any day now and this is their only car. They're using my truck in the interim. Anyway, he drove the Galant into work last week, parked, and when he went to leave for lunch the car cranked and cranked, but would not start.
It is a 2007 Galant, 170k miles, 2.4 liter inline 4, ran perfectly up till last week. Here is a list of checks I have performed, to the best of my ability:
-Engine codes. No check engine light, no codes. What, exactly, would you say it is ya do here, CEL??
-Timing. Belt is intact. Timing is on the money.
-Fuel. Has over half a tank. Disconnected line at the rail, get plenty of fuel gushing out while cranking. Disconnected plug at pump, have power while cranking (it is my understanding that the pump is not powered until you crank; the pump does not operate when the key is simply in "ON". I verified this on my 2.5 Gen Montero...I know, different vehicles, but the general layout of the pumps are the same, so I'm making an educated assumption here). Cracked open the intake and shot a couple squirts of MAF cleaner in while the car was cranking...figured if there was a fuel issue, the car would at least try when the MAF cleaner hit it. Nothing.
-Air. Air cleaner is in good condition. Also, car ran great, then wouldn't at all...more like a switch was thrown.
-Spark. Here's where these danged fly-by-wire vehicles these days really grind my gears. Nowhere near straightforward. It's coil-on-plug, so you can't just pop a plug out, ground it out with pliers, and check spark. I checked all appropriate fuses, none blown. I checked each coil connector and I have power on the power wire at each coil. Checked cam and crank position sensor connections. 12 volts at each sensors power wire, 5 ish volts at each signal wire which is what I think I'm supposed to see there, based on the best I could gather from the interwebs.
What I have changed:
-Cam position sensor. I do not have the requisite oscilloscope for proper testing of these sensors, but I figured the cam and crank sensors were the most likely culprits...they both are common failure items whose sudden failure can single-handedly stop the engine from operating. Cam sensor was right up top, so I started with it. No joy.
-Crank position sensor. Still no joy. Inspected the entire timing belt while I was in there...everything looked great, good tension, timing has not jumped. Barred the engine over, compression feels good. I have not checked compression with my gauge though...not sure I could get my tester screwed in to a spark plug hole down at the bottom of the 8 inch pits they put them in.
I'm not sure what all I can check further. I don't have a fuel pressure tester, so I can't say for sure that it's getting the proper PSI at the rail, but based on what I got spurting out of the line when I disconnected it, I'm not sure shotgunning a fuel pump would do anything. Does any of you folks have any ideas as to where I could go next? ECU maybe? I've never experienced a failed ECU, but what I've heard, they will tend to throw codes around on their way out.
I apologize for the long post, and for it not being about a cool Mitsubishi Montero. I'm just running out of ideas and I know there are some guys on here who are legit savvy with Mitsu engineering. If I can't figure it out, I'm afraid I'm going to have to just send my buddy to the mechanic. I really don't want him to have to do that, cuz there's only two mechanic shops on the island (we live on Kodiak Island) and one of the shops just got busted for dealing meth out the back, so the other shop has jacked their prices up to optimum ********** levels since they are now the only game in town.
Thanks in advance for any insight you guys might have!
Ed
