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how do i post a pic on this thread can i drag the picture over?? Would it show up where your typing at or just a bunch of letters but will post the picture??
greeny.. what makes me curious is... how would bad coils make the tach drop to zero while the tranny was still forcing the engine to spin?
tech gets its signal from coils or ecu depends.....for example, 1 cylinder 500 sparks X 2 ---> 1000rpm so u can see now 6 cylinders 3000 sparks ( do the math ) to wat that it comes to 1000rpm....ECU calculates all that stuff and wen it doesn't get enough sparks( cracked coils) and calculates wrong and tach goes down....correct me if i mixing something dere....
But take into account that none of us are actually under your hood, so to say for sure this is the cause with "actually" looking at the car is not a 100% diagnoses.
Cracked coil packs can wreak havoc on the ve engines drive ability..So try the cheap rtv fix first, if no go, replace them.
Dont know if this matters but sometimes when i push on the clutch the rpms drop below 500?? Is that sopposed to happen sometimes it gets close to zero
well if you are driving and just let go of the gas and push the clutch, rpm will fall back toward idle... it shouldn't really ever go BELOW idle tho. but when your rpm shows zero while, you aren't touching the clutch pedal are you? you're still in gear, foot off the clutch?
__________________ PieceOut.FallToPeacesNew to the forum? CLICK HERE!!!! 1985 Nissan 300zx 2-seater: VG30E | 5spd Swap | Bilstein | 5-lug conversion | Polyurethane everything | Resurrection-in-progress! 2004 Honda Civic EX Coupe: 1.7L VTEC | 5spd | CAI soon | LED tails and Projectors soon | ES Poly Motormounts soon | 'bad weather' car/backup for teh Z 1990 Nissan Maxima GXE: VG30E | VLSD-5 swap | Exedy | NWP | a33b(F)/z31(R) BBK | ES poly | SE susp swap | 2k2SE 17s | retired Aug 28th '09 2005 Nissan Maxima SE: VQ35DE | 6spd | Carolina Panthers front lisence plate | Brother's car, not mine | <-- Therefore still 100% stock
Quote:
Originally Posted by JasonOksa
Horsepower, torque and speed are all known by The State of California to cause cancer, birth defects, and reproductive disorders.
Quote:
Originally Posted by bigleman
how much would it cost to resleeve?
how does an aluminum motor form rust on the cylinder walls???
DO NOT PM ME ABOUT PROBLEMS WITH YOUR CAR UNLESS I TELL YOU TO. THAT'S WHAT THE FORUM IS FOR
Yes correct ill be moving at the time clutch not being touched and still in gear and the rpms drop completely thats when i touch the clutch because the car is slowing down. It just seems like the gas is just cutting out on me.
Yes correct ill be moving at the time clutch not being touched and still in gear and the rpms drop completely thats when i touch the clutch because the car is slowing down. It just seems like the gas is just cutting out on me.
but, keep in mind, if the rpm is reading zero BEFORE you even touch the clutch pedal... the engine is still physically spinning, even if the tach reads zero. As soon as you push the clutch, it really does go to 0rpm, but the way a manual tranny works, regardless what the tach says, the engine will still be spinning until you push the clutch. To me, that's the most important piece of info in the thread, is if the tach falls to zero BEFORE you push the clutch.
__________________ PieceOut.FallToPeacesNew to the forum? CLICK HERE!!!! 1985 Nissan 300zx 2-seater: VG30E | 5spd Swap | Bilstein | 5-lug conversion | Polyurethane everything | Resurrection-in-progress! 2004 Honda Civic EX Coupe: 1.7L VTEC | 5spd | CAI soon | LED tails and Projectors soon | ES Poly Motormounts soon | 'bad weather' car/backup for teh Z 1990 Nissan Maxima GXE: VG30E | VLSD-5 swap | Exedy | NWP | a33b(F)/z31(R) BBK | ES poly | SE susp swap | 2k2SE 17s | retired Aug 28th '09 2005 Nissan Maxima SE: VQ35DE | 6spd | Carolina Panthers front lisence plate | Brother's car, not mine | <-- Therefore still 100% stock
Quote:
Originally Posted by JasonOksa
Horsepower, torque and speed are all known by The State of California to cause cancer, birth defects, and reproductive disorders.
Quote:
Originally Posted by bigleman
how much would it cost to resleeve?
how does an aluminum motor form rust on the cylinder walls???
DO NOT PM ME ABOUT PROBLEMS WITH YOUR CAR UNLESS I TELL YOU TO. THAT'S WHAT THE FORUM IS FOR
Could it be the ignition coils that greeny is talking about?? I checked the front 3 and they are all cracked show in pic above. If not what should i look for next??
Could it be the ignition coils that greeny is talking about?? I checked the front 3 and they are all cracked show in pic above. If not what should i look for next??
if the last sentence in post #71 (rpm says zero BEFORE you push the clutch) is TRUE, then that, to me, still indicates the cam pos sensor. cuz that's the part of the car that reads the RPM in the first place.
I'd test it myself, if i had a VE. but I don't, i have a VG. tho i could perform a similar test... kindof.
a test you can try: go out on a road that has VERY LITTLE traffic, drive 45mph steady. then turn your key to ACC while going 45mph. of course, your engine will be off, but still spinning. push on the gas pedal a few times (you should hear the roar of the intake, as opening the throttle allows more air into the engine) then after 5 seconds, turn your key back to ON (don't hit Start! the engine is still spinning!) and resume driving. Tell me if that feels kindof like how the car behaves normally. (the difference is that this time, your speedometer WILL drop to zero, at the same time as the tachometer.)
__________________ PieceOut.FallToPeacesNew to the forum? CLICK HERE!!!! 1985 Nissan 300zx 2-seater: VG30E | 5spd Swap | Bilstein | 5-lug conversion | Polyurethane everything | Resurrection-in-progress! 2004 Honda Civic EX Coupe: 1.7L VTEC | 5spd | CAI soon | LED tails and Projectors soon | ES Poly Motormounts soon | 'bad weather' car/backup for teh Z 1990 Nissan Maxima GXE: VG30E | VLSD-5 swap | Exedy | NWP | a33b(F)/z31(R) BBK | ES poly | SE susp swap | 2k2SE 17s | retired Aug 28th '09 2005 Nissan Maxima SE: VQ35DE | 6spd | Carolina Panthers front lisence plate | Brother's car, not mine | <-- Therefore still 100% stock
Quote:
Originally Posted by JasonOksa
Horsepower, torque and speed are all known by The State of California to cause cancer, birth defects, and reproductive disorders.
Quote:
Originally Posted by bigleman
how much would it cost to resleeve?
how does an aluminum motor form rust on the cylinder walls???
DO NOT PM ME ABOUT PROBLEMS WITH YOUR CAR UNLESS I TELL YOU TO. THAT'S WHAT THE FORUM IS FOR
Last edited by CapedCadaver; 12-02-2008 at 11:31 PM.
RPMS never go to zero when i push the clutch they never do unless the car is off or when the problem occurs??
yea that's the way it should be. if your car is on, then rpm should never read zero. it should always be 700 (idle) or higher (driving the car). when i said pushing the clutch, i was ONLY referring to pushing the clutch WHILE the problem is occuring. not in every-day driving situations. as long as the car is behaving properly, then no, pushing the clutch will not make the rpm say zero. sorry for that confusion
__________________ PieceOut.FallToPeacesNew to the forum? CLICK HERE!!!! 1985 Nissan 300zx 2-seater: VG30E | 5spd Swap | Bilstein | 5-lug conversion | Polyurethane everything | Resurrection-in-progress! 2004 Honda Civic EX Coupe: 1.7L VTEC | 5spd | CAI soon | LED tails and Projectors soon | ES Poly Motormounts soon | 'bad weather' car/backup for teh Z 1990 Nissan Maxima GXE: VG30E | VLSD-5 swap | Exedy | NWP | a33b(F)/z31(R) BBK | ES poly | SE susp swap | 2k2SE 17s | retired Aug 28th '09 2005 Nissan Maxima SE: VQ35DE | 6spd | Carolina Panthers front lisence plate | Brother's car, not mine | <-- Therefore still 100% stock
Quote:
Originally Posted by JasonOksa
Horsepower, torque and speed are all known by The State of California to cause cancer, birth defects, and reproductive disorders.
Quote:
Originally Posted by bigleman
how much would it cost to resleeve?
how does an aluminum motor form rust on the cylinder walls???
DO NOT PM ME ABOUT PROBLEMS WITH YOUR CAR UNLESS I TELL YOU TO. THAT'S WHAT THE FORUM IS FOR
Could cracked ignition coils cause this?? Im gonna take a video of the problem so everybody can see whats going on.
video will be good. again, i don't have coils like you, so i can't say for sure. but i saw nothing in the FSM (shop manual) that would cause me to think that bad coils, whether one, some, or all, could cause the tachometer to read zero when the car is moving in-gear. That's why i keep bringing up the cam pos sensor as my opinion of what is wrong.
don't get me wrong-- if the coils are cracked, DEFINITELY try and fix them or replace them. I just personally think there's more to your problem than that.
__________________ PieceOut.FallToPeacesNew to the forum? CLICK HERE!!!! 1985 Nissan 300zx 2-seater: VG30E | 5spd Swap | Bilstein | 5-lug conversion | Polyurethane everything | Resurrection-in-progress! 2004 Honda Civic EX Coupe: 1.7L VTEC | 5spd | CAI soon | LED tails and Projectors soon | ES Poly Motormounts soon | 'bad weather' car/backup for teh Z 1990 Nissan Maxima GXE: VG30E | VLSD-5 swap | Exedy | NWP | a33b(F)/z31(R) BBK | ES poly | SE susp swap | 2k2SE 17s | retired Aug 28th '09 2005 Nissan Maxima SE: VQ35DE | 6spd | Carolina Panthers front lisence plate | Brother's car, not mine | <-- Therefore still 100% stock
Quote:
Originally Posted by JasonOksa
Horsepower, torque and speed are all known by The State of California to cause cancer, birth defects, and reproductive disorders.
Quote:
Originally Posted by bigleman
how much would it cost to resleeve?
how does an aluminum motor form rust on the cylinder walls???
DO NOT PM ME ABOUT PROBLEMS WITH YOUR CAR UNLESS I TELL YOU TO. THAT'S WHAT THE FORUM IS FOR
As u say, some of the cracks yes, not a intermittently failing coil. Then Nissan also installed there some electronics (to be fried in the hottest spot): actually what are the components lurking inside? I guess at least few transistors... Gouging them out for repair would show some skill.
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