UDP Installed. Got codes
04-02-2003, 12:02 PM
#1
UDP Installed. Got codes
I installed my UVM Underdrive Pulley installed last night. The car now has a hard time starting. once it starts, it runs fine, but getting started is very difficult now. Also I'm getting two codes. 4-7, crankshaft position sensor, and 8-1, vacuum cut valve bypass valve. Should I change my crankshaft sensor, or is there another problem? btw, my UDP did have those timing notches around the outside of the ring. and they did match up with the position of the stock pulley's notches, so i don't think it's the pulley. Any help would be appreciated.
Joel
Joel
04-02-2003, 12:04 PM
#2
I believe the sensor is down in that area, and you may have disconnected it when changing to the UDP, so double check to see if everything is hooked up properly...Or you have broken the sensor while doing the install 
04-02-2003, 03:32 PM
#3
I checked the sensor, and it seems alright. The plug is secure and the sensor itself does not looked damaged. Any other ideas?
My car is still very hard to start. Seems like reseting the ecu helps the car start easier.
Joel
My car is still very hard to start. Seems like reseting the ecu helps the car start easier.
Joel
05-04-2003, 11:24 AM
#6
My car was so bad with the RVM pulley I took it off two days after I put it on. I got stranded twice and couldn't start the car. Had to tow my car twice. I took the pulley off. the problem with the hard starts is because RVM's pulley ring is badly designed. The ring has two flaws. probably the most important flaw is that it is made of stainless steel. it seems like the first batch of pulleys are made of regular steel, but the latest batch of pulleys had SS rings. the SS does not react to magnets therefore does not send any signal to the crankshaft position sensor. another problem is that the double tabs are about 1/8" off of where it should be.
the only way to fix it is to get a new ring cut out of mild steel. you may be able to get away with cutting the little tabs off of the ring and welding little mild steel tabs back on. make sure they don't stick out too far or they will damage the crankshaft position sensor.
Even if you do get the rign to work, ther is the second problem of possibly getting an oil leak. this may take longer to notice.
In my case I didn't want to chance it. I just took off my RVM UDP and put my stock pulley on. car worked fine after that.
Then last tuesday I called nick @ definitive motor sports and ordered one of his pulleys. his pulley was made with the mild steel ring (coated in zinc to resist rusting!!!) And they have a brass sleeve to resist abbrasion with the oil seal preventing an oil leak.
Quality of the pulley was impeccable. Looks as good as Unorthodox Racing's pulley but at 2/3 the price. Not only that, but Definitive's pulley is a hair lighter than UR's Pulley!
I ordered it tuesday and received it thursday!!! that's with shipping to Hawaii. it uses the same size belts i had for the RVM pulley so I didn't need new belts, but I did need to buy a new crankshaft oil seal. they are not mentioned in any of the directions, but I would reccomend everyone who changed their pulley to change their oil seal. it's only 8 bucks but it's good insurance against oil leaks.
after installing, car runs great! starting the car is not a problem, in fact i think it's easier to start the car now. probably because the starter doesn't have to turn the accessories as much with the underdriven pulley.
I would reccomend anyone with a RVM pulley to return it to RVM. do not install it. Spend a few more dollars and get a pulley from Nick at Definitive.
the only way to fix it is to get a new ring cut out of mild steel. you may be able to get away with cutting the little tabs off of the ring and welding little mild steel tabs back on. make sure they don't stick out too far or they will damage the crankshaft position sensor.
Even if you do get the rign to work, ther is the second problem of possibly getting an oil leak. this may take longer to notice.
In my case I didn't want to chance it. I just took off my RVM UDP and put my stock pulley on. car worked fine after that.
Then last tuesday I called nick @ definitive motor sports and ordered one of his pulleys. his pulley was made with the mild steel ring (coated in zinc to resist rusting!!!) And they have a brass sleeve to resist abbrasion with the oil seal preventing an oil leak.
Quality of the pulley was impeccable. Looks as good as Unorthodox Racing's pulley but at 2/3 the price. Not only that, but Definitive's pulley is a hair lighter than UR's Pulley!
I ordered it tuesday and received it thursday!!! that's with shipping to Hawaii. it uses the same size belts i had for the RVM pulley so I didn't need new belts, but I did need to buy a new crankshaft oil seal. they are not mentioned in any of the directions, but I would reccomend everyone who changed their pulley to change their oil seal. it's only 8 bucks but it's good insurance against oil leaks.
after installing, car runs great! starting the car is not a problem, in fact i think it's easier to start the car now. probably because the starter doesn't have to turn the accessories as much with the underdriven pulley.
I would reccomend anyone with a RVM pulley to return it to RVM. do not install it. Spend a few more dollars and get a pulley from Nick at Definitive.
05-04-2003, 12:48 PM
#7
Junior Member
Join Date: Feb 2003
Posts: 24
Also RVM pulley problems
I have a 95 nissan maxima SE and the same problems with RVM pulley (codes and hard starting). The reason for this is because RVM made a bad timing ring, if you check it with stock pulley it is off by about 1/8". Don't replace or do anything with your crank sensor, if it was bad your car wouldn't start at all. I called RVM last week on 04-29-03 and they said that they will be sending out new timing rings for those pulleys free of charge in 2 weeks. Also, they said that all you need to do is send them an email with your info.
05-04-2003, 02:05 PM
#8
Re: Also RVM pulley problems
The problem with starting the car might have nothin to do with the SS material.
The problems lies on the alignment of the tabs. It drives the crankshaft sensor crazy since it does not know the position of the crankshaft (to start the firing order).
The problems lies on the alignment of the tabs. It drives the crankshaft sensor crazy since it does not know the position of the crankshaft (to start the firing order).
05-04-2003, 03:08 PM
#9
Many people are installing having problems with oil leak after installing the pulley. I suggest you guys call RMV and complain. I locked their GD thread so no more sales can be made through the org.
This is a bad product.
This is a bad product.
05-04-2003, 03:16 PM
#10
I installed UN Pulley a long time ago, I still don't have any problem at all like hard starting or etc. Sometimes is good to pay more for reliable product like UN pulley, not RVM. RVM pulley is a bad product, not only for Maxima, but others model as well. I used to buy RVM pulley for my LExus IS300, a lot of problems with that pulley. Then I switched to UN all 4 set of pulley , and I paid like $600 for it. All I can say is Wow, I am going to pay and get something is reliable for my engine parts ...........
05-05-2003, 09:34 AM
#11
Update
I spoke with somebody at RVM today and they said that the company that they contracted the timing ring out to did not build it to their specifications, thus the timing / crankshaft sensor problem. They then told me that they are sending one out to me and that I should have it by tomorrow. We'll see.
Problem is, I really didn't feel like putting this pulley on myself so I took it to a mechanic to do it. The guy charged me an extremely reasonable price of $52 but now it has to be re-done so I either have to spend another $52 or just do it myself (which I will do). Do you think RVM will compensate me for my initial $52 installation fee?
Problem is, I really didn't feel like putting this pulley on myself so I took it to a mechanic to do it. The guy charged me an extremely reasonable price of $52 but now it has to be re-done so I either have to spend another $52 or just do it myself (which I will do). Do you think RVM will compensate me for my initial $52 installation fee?
05-05-2003, 09:44 AM
#12
RVM has so many complaints right now, they wont refund any money cause they'll probally have to close down...LMAO i have this pulley brought it from a .org new, and think its a 50/50 chance. maybe its the ay you had it installed?
05-05-2003, 09:57 AM
#13
Originally posted by greenmax95se
RVM has so many complaints right now, they wont refund any money cause they'll probally have to close down...LMAO i have this pulley brought it from a .org new, and think its a 50/50 chance. maybe its the ay you had it installed?
RVM has so many complaints right now, they wont refund any money cause they'll probally have to close down...LMAO i have this pulley brought it from a .org new, and think its a 50/50 chance. maybe its the ay you had it installed?
05-05-2003, 02:59 PM
#15
Senior Member
Join Date: Jul 2002
Posts: 594
I can't believe you even bothered installing that piece of s#@#. That it off throw it out and buy a definitive or unorthodox UDP. I didn't install mine i just read the comments and ordered a definitive pulley which i will have installed soon. Order another one and forget it
05-05-2003, 04:07 PM
#16
Junior Member
Join Date: Feb 2003
Posts: 24
I know for sure that the timing ring is the problem! I did try to place RVM timing ring in all different positions and it still is the same problem. As soon as I switched to stock pulley car started fine just from the first time and no problems since.
05-05-2003, 08:54 PM
#18
next cheapest pulley is Definitive. It costs more than RVM, but it does work very well. I'd say as good if not better than UR as far as construction. Car starts perfectly with Definitive pulley on.
05-06-2003, 07:40 AM
#19
Junior Member
Join Date: Feb 2003
Posts: 24
What is definitive website of phone number?
Originally posted by Kanaka
next cheapest pulley is Definitive. It costs more than RVM, but it does work very well. I'd say as good if not better than UR as far as construction. Car starts perfectly with Definitive pulley on.
next cheapest pulley is Definitive. It costs more than RVM, but it does work very well. I'd say as good if not better than UR as far as construction. Car starts perfectly with Definitive pulley on.
05-06-2003, 09:48 AM
#21
Re: What is definitive website of phone number?
Originally posted by litxus
Can you please post where I can get it (like website or phone number). Thanks.
Can you please post where I can get it (like website or phone number). Thanks.
there's a thread in the GD forum too.
05-06-2003, 09:51 AM
#22
Originally posted by dwapenyi
There is another thread here talking about the RVM pulley. Apparently, RVM specifies the tightening TQ way to high, like 146 ft-lbs. It should be around 40 ft-lbs, which is what the stock pulley is TQed at. They verified it from the Nissan FSM. Maybe there was a typo in the RVM instructions and they accidentally put a "1" in front of the 46 ft-lbs.
I can actually verify it myself. I have the 98 Nissan FSM, and it says to TQ the stock pulley from 29-36 ft-lbs.
This may be the reason that alot of you RVM guys are getting oil leaks and hard starting.
DW
There is another thread here talking about the RVM pulley. Apparently, RVM specifies the tightening TQ way to high, like 146 ft-lbs. It should be around 40 ft-lbs, which is what the stock pulley is TQed at. They verified it from the Nissan FSM. Maybe there was a typo in the RVM instructions and they accidentally put a "1" in front of the 46 ft-lbs.
I can actually verify it myself. I have the 98 Nissan FSM, and it says to TQ the stock pulley from 29-36 ft-lbs.
This may be the reason that alot of you RVM guys are getting oil leaks and hard starting.
DW
Did you post this in that that Important thread?
05-06-2003, 12:14 PM
#23
Re: Update
Originally posted by Bluebird
I spoke with somebody at RVM today and they said that the company that they contracted the timing ring out to did not build it to their specifications, thus the timing / crankshaft sensor problem. They then told me that they are sending one out to me and that I should have it by tomorrow. We'll see.
Problem is, I really didn't feel like putting this pulley on myself so I took it to a mechanic to do it. The guy charged me an extremely reasonable price of $52 but now it has to be re-done so I either have to spend another $52 or just do it myself (which I will do). Do you think RVM will compensate me for my initial $52 installation fee?
I spoke with somebody at RVM today and they said that the company that they contracted the timing ring out to did not build it to their specifications, thus the timing / crankshaft sensor problem. They then told me that they are sending one out to me and that I should have it by tomorrow. We'll see.
Problem is, I really didn't feel like putting this pulley on myself so I took it to a mechanic to do it. The guy charged me an extremely reasonable price of $52 but now it has to be re-done so I either have to spend another $52 or just do it myself (which I will do). Do you think RVM will compensate me for my initial $52 installation fee?
05-06-2003, 03:21 PM
#24
Someone else posted that info on the other thread. I just took that and brought it here.
On very different note, I went to edit my post and accidentally deleted it. I guess you replied before it vanished
DW
On very different note, I went to edit my post and accidentally deleted it. I guess you replied before it vanished
DW
Originally posted by Bluebird
Wow. That is so simple but it makes so much sense. I'm going to re-torque mine tomorrow.
Did you post this in that that Important thread?
Wow. That is so simple but it makes so much sense. I'm going to re-torque mine tomorrow.
Did you post this in that that Important thread?
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