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7 Posts
Hello!
I recently bought a 2000 SE V6 4x4 Crew Cab, this my first Nissan, and I love this truck and im doing my best to repair/restore it to the best condition that I can. I bought it for $2500 with 181k on the body, and 130k on the motor. I have lurked this site for lots of helpful info over the last 6 weeks. However I have not found a situation that resembles mine in its entirety. I hate to get long winded, but I think a little background is going to help with the solution.
I bought this truck from a friend, he had the truck for a few years, and it worked great for him. One day he was coming back to Indiana from a smokey mountain camping trip in Tennessee. The check engine light popped on, and the truck started to shudder and shake, and nearly stall (typical of failed CKP in some of the other threads I found). He was able to get it back home and get it scanned. The only code present was a p0335 CKP sensor. So he had it replaced, however the symptoms still existed. He then had the cap, rotor, plugs, and wires replaced, along with a new bearing inside the distributor. After this the truck was running fine but the p0335 was still on, this is the point in which I bought the truck.
Now, after I have the truck, I notice everything seems to be fine, P0335 is still on. After a few days of driving I realize that while im at a stoplight, or parked with the motor running at idle. After every 5-6 seconds, there is a slight shudder (very slight, it took me a few days to notice) it causes the truck to shake ever so slightly, you can feel it in the seat and steering wheel, almost like a minor misfire. Then it returns to normal for a few cycles, then again, etc. etc. So after reading up, I decided to change the distributor in order to sync up the new CKP sensor with a new cam sensor in the distributor. After doing so it appears that this had little to no effect on my symptoms at all, and after clearing the codes, they promptly returned after a few miles of driving.
The P0325 (Knock sensor) didn't come on until the day before I put my new distributor in. This could be from any number of things, but I figured i'd throw it all in one thread in case anyone has ideas. The gas mileage on the truck since ive owned it (approx 3 fill ups) has been around 11-12 mpg. Which is slightly less than expected but not a huge deal. So I decided to see if it was a timing issue. I fiddled with the distributor timing for about an hour, advancing and retarding, this had absolutly no effect at all. So getting ballsy trying to get some kind of baseline result, I did a full retard on the timing. Started the truck, its struggled at first, then ran like normal after a few cranks, drove it around the block, fine, everything seems like it has always been, codes still present but no changes, so I did the opposite, I advanced it all the way. Same results, codes still present. So then I placed everything back the way it was, ( I used a sharpie, and a scoring marking to make marks on the metal around the timing bolt.) I returned them to normal. The problem still exists, I assumed that doing a full advance, and retard on the timing had no effect if the knock sensor is actually doing its job? Im not sure any advice will be greatly appreciated.
Update, a few days later the P0325 is gone, but the P0335 is still present, as is the slight mis/shudder, at idle every few cycles. I know that the CKP is just for the ECU and diagnostics and not really a huge deal, and honestly I can deal with it and just scan once a week for new codes if needed, but im trying to find out if this is related to the shudder or not. This shudder symptom was not present with the previous owner, I had him drive it and he said the truck did have smooth idle prior to the Tennessee trip. Its more of an annoyance than anything.
Other items I have checked include:
Fuel filter, its been replaced and looks good.
Fuel pressure, is solid within spec.
Air filter,and MAF have been replaced.
Gas tank and fuel sending unit have been replaced recently under recall at local dealer.
Voltages at the CKP, I don't have a scope so I used a multimeter. They are good at the CKP and the distributor.
Changed oil, it was clean and looked healthy.
Any advice, pointers, or other places to look for trouble would be greatly appreciated.
In the mean time, Ill continue to drive it as a daily commuter, and work on its suspension needs. Ill start a build thread soon to track the overall progress and upgrades of the truck with photos.
Thanks!
--Miles
I recently bought a 2000 SE V6 4x4 Crew Cab, this my first Nissan, and I love this truck and im doing my best to repair/restore it to the best condition that I can. I bought it for $2500 with 181k on the body, and 130k on the motor. I have lurked this site for lots of helpful info over the last 6 weeks. However I have not found a situation that resembles mine in its entirety. I hate to get long winded, but I think a little background is going to help with the solution.
I bought this truck from a friend, he had the truck for a few years, and it worked great for him. One day he was coming back to Indiana from a smokey mountain camping trip in Tennessee. The check engine light popped on, and the truck started to shudder and shake, and nearly stall (typical of failed CKP in some of the other threads I found). He was able to get it back home and get it scanned. The only code present was a p0335 CKP sensor. So he had it replaced, however the symptoms still existed. He then had the cap, rotor, plugs, and wires replaced, along with a new bearing inside the distributor. After this the truck was running fine but the p0335 was still on, this is the point in which I bought the truck.
Now, after I have the truck, I notice everything seems to be fine, P0335 is still on. After a few days of driving I realize that while im at a stoplight, or parked with the motor running at idle. After every 5-6 seconds, there is a slight shudder (very slight, it took me a few days to notice) it causes the truck to shake ever so slightly, you can feel it in the seat and steering wheel, almost like a minor misfire. Then it returns to normal for a few cycles, then again, etc. etc. So after reading up, I decided to change the distributor in order to sync up the new CKP sensor with a new cam sensor in the distributor. After doing so it appears that this had little to no effect on my symptoms at all, and after clearing the codes, they promptly returned after a few miles of driving.
The P0325 (Knock sensor) didn't come on until the day before I put my new distributor in. This could be from any number of things, but I figured i'd throw it all in one thread in case anyone has ideas. The gas mileage on the truck since ive owned it (approx 3 fill ups) has been around 11-12 mpg. Which is slightly less than expected but not a huge deal. So I decided to see if it was a timing issue. I fiddled with the distributor timing for about an hour, advancing and retarding, this had absolutly no effect at all. So getting ballsy trying to get some kind of baseline result, I did a full retard on the timing. Started the truck, its struggled at first, then ran like normal after a few cranks, drove it around the block, fine, everything seems like it has always been, codes still present but no changes, so I did the opposite, I advanced it all the way. Same results, codes still present. So then I placed everything back the way it was, ( I used a sharpie, and a scoring marking to make marks on the metal around the timing bolt.) I returned them to normal. The problem still exists, I assumed that doing a full advance, and retard on the timing had no effect if the knock sensor is actually doing its job? Im not sure any advice will be greatly appreciated.
Update, a few days later the P0325 is gone, but the P0335 is still present, as is the slight mis/shudder, at idle every few cycles. I know that the CKP is just for the ECU and diagnostics and not really a huge deal, and honestly I can deal with it and just scan once a week for new codes if needed, but im trying to find out if this is related to the shudder or not. This shudder symptom was not present with the previous owner, I had him drive it and he said the truck did have smooth idle prior to the Tennessee trip. Its more of an annoyance than anything.
Other items I have checked include:
Fuel filter, its been replaced and looks good.
Fuel pressure, is solid within spec.
Air filter,and MAF have been replaced.
Gas tank and fuel sending unit have been replaced recently under recall at local dealer.
Voltages at the CKP, I don't have a scope so I used a multimeter. They are good at the CKP and the distributor.
Changed oil, it was clean and looked healthy.
Any advice, pointers, or other places to look for trouble would be greatly appreciated.
In the mean time, Ill continue to drive it as a daily commuter, and work on its suspension needs. Ill start a build thread soon to track the overall progress and upgrades of the truck with photos.
Thanks!
--Miles
