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gav
Guest
Does this sound like the fuel pump. You can physically feel the car holding back. Got new plugs and fuel filter. 
Fire & skill
Vintage member
i would fit diz cap and rotor arm, poss new plugs and clean the MAF sensor before replacing the pump, could be the FPR over fuelling. whats it like higher up the rev range? is it popping flames. you may also want to check the voltage to the pump
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andy n
Guest
reground your maf sensor, do a fault code check as well. its all in the how to section
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gav
Guest
Its better when i floor it but still feels slow.
Dooie Pop Pop
New Member
check your voltage at the earth on the maf, cant offhand remember what its supposed to be below but if you do a search............
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DOT2DOT
Guest
Mine has been doing the same thing. Problem comes and goes. Car is standard apart from full straight through mongoose. Smells like its running rich + flames and pops on overrun. Standard boost gauge is reading 14 pounds, but i dont know how accurate that is. Does it seem high? Tried seeing what faults where stored. SHowed a code 55. Seemed a little better after clening terminals on leads and dissy, but could be co-incedence. Im getting hold of CONSULT later so hopefully that will show something up.
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gav
Guest
Changed the cap and arm and this has helped a whole lot. Tried cleanin them but did little. For the cost of them both its not worth the hastle cleaning. New fuel pump on when it eventually arrives should finish the job.
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gav
Guest
It does it when crusing round 60mph not when under boost.
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GTi-R Sara
Guest
Our car is doing a simular thing but only when it gets warm and it is on boost. It doesn't seem to be pulling full boost either as it is peaking around 5 - 5.5 psi, where as my friend standard Pulsar peaks at 7psi everytime.
You can drive through the hesitation all the way to the red line but I can definatly feel it.
You can drive through the hesitation all the way to the red line but I can definatly feel it.
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gav
Guest
Yeah similer to that. Really bugging me now. Now fitted new plugs, leeds and regroung my maf sensor and still no different.
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gav
Guest
New fuel pump and filter fitted yesterday. Along with re earthing the maf sensor and fuel pump. And guess what?. Still the same problem. F***ing cars. :x :x :x
monsterGTi-R
New Member
Try some injector cleaner in your fuel :roll:
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GartracS2
Guest
If the car suffers from lack of power through any rpm in any gear MAF is usual culprit.
You need to come and see me and I can plug my consult unit into your DLC socket, we need to physically see what your car is actually doing.
In my opinion if its holding back are you using a standard boost control valve? Tell me what boost control method you are currently using.
I have 10 years Nissan experience
PM me and ill give you my details. I wont charge for a consult 2 session While your on here mate.
It will be summat and nothing.
Dont forget Nissan ER (Engine Room harnesses) have a few earths that may need cleaning up. Also check the ecm hasnt got damp.
You need to come and see me and I can plug my consult unit into your DLC socket, we need to physically see what your car is actually doing.
In my opinion if its holding back are you using a standard boost control valve? Tell me what boost control method you are currently using.
I have 10 years Nissan experience
PM me and ill give you my details. I wont charge for a consult 2 session
While your on here mate.It will be summat and nothing.
Dont forget Nissan ER (Engine Room harnesses) have a few earths that may need cleaning up. Also check the ecm hasnt got damp.
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gav
Guest
Dont think injector cleaner will help coz the problem would be exsagerated under boost.
I am using a bleed valve. Sounds crap but it holds boost fine. Cleaned all earths in engine bay And even changed the main earth to battery leed.
I am using a bleed valve. Sounds crap but it holds boost fine. Cleaned all earths in engine bay And even changed the main earth to battery leed.
little ghost
Member
Gav, my car is holding back under part throttle boost sometimes. I've been told that the actuator is the most likely culprit- weak spring or summat. I'm also on a bleed valve. Do you find that you've had to wind the valve out further than you would normally to acheive the same amount of boost? If so, this would be more evidence for the actuator theory.