TPS maybe?
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TPS maybe?
driving to work today and the car starts to chug and buck. check engine light comes on than the car dies. i fire it up again starts fine. give it some gas but will not go if i go over half throttle. so i think its the tps. what would you guys think it is? i do have a JDM ej25 manifold and was wondering if the tps from that would work?
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
http://legacycentral.org/library/literature/codes.htm
As Vik said, no reason to guess wildly, but it does sound like it could be your knock sensor.
Pull the codes and let us know what you find.
As Vik said, no reason to guess wildly, but it does sound like it could be your knock sensor.
Pull the codes and let us know what you find.
-Aaron
2000 Audi S4 - 2.7L Twin-turbo, 6 Speed
[quote="evolutionmovement"]It was me. And those are my balls. Happy Sunday![/quote]
2000 Audi S4 - 2.7L Twin-turbo, 6 Speed
[quote="evolutionmovement"]It was me. And those are my balls. Happy Sunday![/quote]
right after i open my mouth i found the link. thanks for posting them. just read them and will do when get home.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
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- Vikash
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Cool. Good luck.
Oh, also, no, I don't believe the JDM EJ25 TPS will work. You can take a quick look at its electrical connector, though. If it has four pins, it should work. But if it has three then it won't.
Oh, also, no, I don't believe the JDM EJ25 TPS will work. You can take a quick look at its electrical connector, though. If it has four pins, it should work. But if it has three then it won't.
"Just reading vrg3's convoluted, information-packed posts made me feel better all over again." -- subyluvr2212
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- Knowledgeable
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no water temp sen one. i got. i reset the ecu also.douglas vincent wrote:Water temp sensor, five bucks.....
22
23
24
31
45
49
so what do you guys think?
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
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- Vikash
- Posts: 12517
- Joined: Sun Nov 03, 2002 2:13 am
- Location: USA, OH, Cleveland (sometimes visiting DC though)
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Trouble code 45 (pressure sensing) will make the ECU cut fuel above about 50% throttle. n2x4's experience (see http://bbs.legacycentral.org/viewtopic.php?t=40426) seems to indicate it might do the same for code 24 (IAC valve).
You've got a mess of codes though. The presence of code 49 (wrong MAF sensor) seems to indicate some kind of spurious electrical problem, though; ordinarily the only way you get that code is by actually installing a JECS MAF sensor.
Not all those codes are active. The Hitachi ECU cannot run while code 23 (MAF sensor) is active. It's unlikely that the pressure sensing setup and IAC valve are both malfunctioning, so you need to figure out which one it is. You tried clearing the codes? With the clear memory procedure?
You've got a mess of codes though. The presence of code 49 (wrong MAF sensor) seems to indicate some kind of spurious electrical problem, though; ordinarily the only way you get that code is by actually installing a JECS MAF sensor.
Not all those codes are active. The Hitachi ECU cannot run while code 23 (MAF sensor) is active. It's unlikely that the pressure sensing setup and IAC valve are both malfunctioning, so you need to figure out which one it is. You tried clearing the codes? With the clear memory procedure?
"Just reading vrg3's convoluted, information-packed posts made me feel better all over again." -- subyluvr2212
waiting for the car to be cool and pulling out number 14 fuse as i read. i do have a JECS MAF, but its not in. i did install it for a min or so, so might have made that code. i will redo my intake and vacumm lines. than clear the ecu and see what i get.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
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- Vikash
- Posts: 12517
- Joined: Sun Nov 03, 2002 2:13 am
- Location: USA, OH, Cleveland (sometimes visiting DC though)
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Don't bother pulling the fuse. Just do the clear memory procedure.
But, actually, now that I reread your first post, it sure sounds like the IAC valve. A pressure sensing failure wouldn't cause the engine to stall.
But, actually, now that I reread your first post, it sure sounds like the IAC valve. A pressure sensing failure wouldn't cause the engine to stall.
"Just reading vrg3's convoluted, information-packed posts made me feel better all over again." -- subyluvr2212
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- Fifth Gear
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this is the 2nd IAC i have put in and the same problem.
about the main relay. sometime the car will not start, than 2 min later it will. i hear the click that the relay should be doing.
also what about the ignitor chip? could there be a problem there.
the person before me beat the firewall and re wired teh chip.
thank you guys for the help so far. always welcome for more inputs. i think i need to ge the intake done first.
about the main relay. sometime the car will not start, than 2 min later it will. i hear the click that the relay should be doing.
also what about the ignitor chip? could there be a problem there.
the person before me beat the firewall and re wired teh chip.
thank you guys for the help so far. always welcome for more inputs. i think i need to ge the intake done first.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
Clear the codes then go for a drive in diagnostic mode. In diagnostic mode it will only need a problem to occur once to set a code whereas in normal running around it will take two or more instances of a possibly intermittent problem to occur before setting a code.
The car can run with any of those codes set. They record intermittent problems and the problem can have gone away entirely and the code can still be set.
The car can run with any of those codes set. They record intermittent problems and the problem can have gone away entirely and the code can still be set.
Possibly..
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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- Vikash
- Posts: 12517
- Joined: Sun Nov 03, 2002 2:13 am
- Location: USA, OH, Cleveland (sometimes visiting DC though)
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You replaced an IAC valve before? Was it throwing the IAC trouble code then?
Could be the IAC wiring in that case.
I doubt it's a bad MAF sensor. This is kind of related to n2x4's active thread about his ECU troubles.
Could be the IAC wiring in that case.
I doubt it's a bad MAF sensor. This is kind of related to n2x4's active thread about his ECU troubles.
"Just reading vrg3's convoluted, information-packed posts made me feel better all over again." -- subyluvr2212
Isn't there a method for checking the IAC and TPS with a Multimeter? Seems like I saw a thread on it (might have been in the FSM).
I only mention the MAF because I remember reading a post somewhere with a car that had stalling issues during all sorts of different running conditions.
-I would certainly check off the Pressure Exchange Solenoid, as stated above this shouldn't cause the engine to stall..just cuts fuel.
-If it were a bad Knock sensor as previously mentioned, wouldn't this just through the car into a limp mode?
I only mention the MAF because I remember reading a post somewhere with a car that had stalling issues during all sorts of different running conditions.
-I would certainly check off the Pressure Exchange Solenoid, as stated above this shouldn't cause the engine to stall..just cuts fuel.
-If it were a bad Knock sensor as previously mentioned, wouldn't this just through the car into a limp mode?
- Findlay
"You say grease monkey like its a bad thing"
http://www.toolsource.com
"You say grease monkey like its a bad thing"
http://www.toolsource.com
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- Vikash
- Posts: 12517
- Joined: Sun Nov 03, 2002 2:13 am
- Location: USA, OH, Cleveland (sometimes visiting DC though)
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Yes, you're right -- there is a basic set of tests in the factory service manual. The trouble is that they can't reveal intermittent faults.
If the ECU knows the knock sensor is bad, it does switch to its base ignition map, but the engine actually runs pretty well on this map, so it won't feel like it's limping.
If the ECU knows the knock sensor is bad, it does switch to its base ignition map, but the engine actually runs pretty well on this map, so it won't feel like it's limping.
"Just reading vrg3's convoluted, information-packed posts made me feel better all over again." -- subyluvr2212
You didn't say what "driving to work" involves. Hills? highway? city driving? What were you doing when it stopped? What was the weather like/ How far had you gone?
I'd check the fuel pressure and flow, check all the small vacuum hoses aren't split or falling off, check that there weren't any spark problems... wet ignition leads for instance.
Clear the codes and go for another drive.
I'd check the fuel pressure and flow, check all the small vacuum hoses aren't split or falling off, check that there weren't any spark problems... wet ignition leads for instance.
Clear the codes and go for another drive.