Rev's Surging
- Thread starter joshy
- Start date
Help Support Nissan Navara Forum:
joshy
Member
- Joined
- Oct 1, 2008
- Messages
- 2,088
- Reaction score
- 0
Righto so the surging is back big time. Nav is way down on power, was struggling to drive up fire trail hills yesterday. Pulled the NPS out all together, didnt make any difference. Then it came good for a bit, wasnt surging just had bugger all power and wanted to stall whenever i loaded it up trying to crawl. Then the surging came back. It would struggle to run blowing heaps of smoke then all of a sudden come good again and full of power. Then itd struggle again and this time itd just stall, even with foot on clutch. was a very slow process getting it back to the car trailer. Im going to change out the pump but could it be an electrical issue aswell????
It sounds like the ECU's overfuelling it. I'd guess at an erratic electrical connection on a sensor (like fuel pressure sender or MAPS).
bods
Member
Not a blocked banjo fitting filter on the injector pump is it? Or do they not have them in the d22s? I know it was a fairly common problem on the zd30 patrols
Last edited:
nah thats on the TD42 patrols.
have you checked fuel supply from tank? bit of crap in the tank blocking the feed.
otherwise i would suspect the injection pump. i think someone had similar symptoms on the UK forum and it was the IP's electronics.
joshy
Member
- Joined
- Oct 1, 2008
- Messages
- 2,088
- Reaction score
- 0
forgot to mention when i turn the lift pump off the car wont run. Im halfway through changing the injector pump, man is it hard to get out. also the timing was 3 links out!!!! wtf??? then taking it to nissan tomorrow arvo to read the error codes.
Could the lift pump have been the only thing moving the fuel around? That would cause some problems.
do you have a bypass fitted around the lift pump?
most pumps will block or restrict flow when they are not running. hence turn pump off and it won't go.
it would be fairly rare to have the IP lift pump to fail.
possibly a bit of crap has got in and jammed one of the pressure valves.
the most common mechanical problem is generally the timing mech wearing out the housing.
ip lift pump
most pumps will block or restrict flow when they are not running. hence turn pump off and it won't go.
it would be fairly rare to have the IP lift pump to fail.
possibly a bit of crap has got in and jammed one of the pressure valves.
the most common mechanical problem is generally the timing mech wearing out the housing.
ip lift pump
Attachments
joshy
Member
- Joined
- Oct 1, 2008
- Messages
- 2,088
- Reaction score
- 0
Nah didnt have a by pass. Ive got the new pump in now, just cant get it to start. The banjo fitting on the intake is leaking like a siv, tried new copper washers, didnt work, just got some fabric ones see if that does anything. Ive by passed the normal fuel filter incase its sucking in air there. Gota wait for the battery to recharge now so i can try again.
joshy
Member
- Joined
- Oct 1, 2008
- Messages
- 2,088
- Reaction score
- 0
Turns out the electrics on the pump were fried.... $3000 dollars later i have a new pump to put on tomorrow that hopefully works. Turns out every year model ZD30 has a different pump and they are NOT interchangable so be very carefull when buying one. After tuff truck the ZD30 will be pulled out and sold if anyone is interested in a cheap motor. less then 30,000kms on the motor.
04SilverSTR
Member
$3000!!!!!!!!!!!!!!!!!1 OUCH, any idea on what would have caused the elecs to fry?
bryan
bryan
did you look at getting the electrics replaced?
there is a crowd somewhere that replaces the electronics in the pump.
there is a crowd somewhere that replaces the electronics in the pump.
