[surges/misfires on acceleration at normal running temp]

Sorry I took so long to get back but I finally got the problem fixed

Cheers to the fellas who helped

It was the o2 sensor

 

bolts in the exhaust between the headers and the cat

CHEERS

 

 

 

It's been a few months now with about 5000km's and the problem has not come back at all. Thanks to the guys who suggested the O2 sensor.

[surges/misfires on acceleration at normal running temp]

i'll elimimate the 02 sensor next

thanks for the input

Sorry I took so long to get back but I finally got the problem fixed

Cheers to the fellas who helped

It was the o2 sensor

 

bolts in the exhaust between the headers and the cat

CHEERS

[91 still not running right]

I got a 94 and had dramas since i bought it. started fine but when it warmed up it ran like @!*%. I got on forums and searched hi and low for solutions to the problems and it ended up being the o2 sensor, easy to change it screws in the exhause between the headers and the cat and the wires run up near the battery on the right side. Nissan use bosch so if you go to your local parts supplies and insist on bosch they should get it.

I did all the plugs leads filters fuel checks and maf and it ended up being the o2

[surges/misfires on acceleration at normal running temp]

i'll elimimate the 02 sensor next

thanks for the input

[surges/misfires on acceleration at normal running temp]

HI ALL

my motor doesn't mis a beat now and then, she completly misfires on all cylinders and runs crap when she's reached running temp. although she runs crap at running temp she never stalls.

does anyone know if a scan tool exist for a 94 nissan ECM?

 

any sugestions are welcome no mater how @!*%ty it may sound

 

CHEERS

[surges/misfires on acceleration at normal running temp]

bugga its happened again pathy runs rough when its at correct running temp, no codes other then 55 ive changed everything i can think of.

 

HAS ANYONE GOT ANY SUGGESTIONS AS I'M ALL OUT OF IDEAS

 

The ecu was getting code 12 but another maf has cleared that.

Plugs, leads, dizzy cap, rotor button, fuel filter, cleaned maf, sprayed ether around vacuum hoses. what am i forgetting????????????????????????????

[surges/misfires on acceleration at normal running temp]

If the headers weren't balanced properly you may have problems with a random misfire perhaps, the hi-flo and headers won't do a real lot for a stock engine eccept make it louder with 3% horse power gain. I think you should get it running properly first before you spend more on performance enhancing. but for sure lumpy cams and a worked head would be nice i think you won't get much change from 4 G bangers($4000) if you do it right.

But if you go too lumpy certain 4wd tracks will give you grief but you'll be blowing the doors off any other SUV around town.

If your rig is just for off-road mud tracks and full-on hill climbs i recommend 4 cylinders everyday.

I had a Z24 Navara before this pathy and the old zed would leave this pathy for dead when comes to off-road

[surges/misfires on acceleration at normal running temp]

bugga it happened again today i ran the ecu codes and got 55 so i'm not real sure why but after i got going again it was ok, i drove around for 1/2 an hour or so and there was no problems. i'll take it for another rap around block later. the only thing i can think of is i maybe cleared the error when i ran the ecu codes

[surges/misfires on acceleration at normal running temp]

Yep got a maf off a navara works better but maybe need to give it a clean

the code 12 is gone and i'm getting 55 so

i'm about to take it for a decent drive and see how she goes.

i've only owned the old girl for 4 weeks and haven't seen even one spec of dirt yet.

[surges/misfires on acceleration at normal running temp]

defiantly check the wire going to the maf. my freinds pathy the hood would make it act kinda like yours becasue it put a short in the maf connector due to years of it hitting the hood. Where are you located? If in the US and u still want a used one from my old 93 i parted out let me know. SOmeone already has dibs on it but if they dont want it i was thinking about 30 bucks +shipping

 

 

Thanks mate, I'm from Sydney in Australia, I can locate a 2nd hand maf from a few places but i'm not 100% sure the maf is the problem, If i take the maf plug off it runs even worse. i checked the wires with a muti-meter and theres definitley current running through.

 

This issue only happens when the motor is at running temp and at running temp it idles fine, if i turn it off and wait a few minutes it will start up and drive well for the first minute or so and then it occures again.

 

Thanks for your offer though you're a top bloke cheers.

[surges/misfires on acceleration at normal running temp]

ECU only showed; code 12 = MAF

I took it off and it was rather clean so i cleaned it anyway and that hasn't helped its still the same.

now i'll try and source a second hand one.

Does anyone know if other nissans such as maxima's, navara's or 300zx's use the same MAF ?

[surges/misfires on acceleration at normal running temp]

 

 

 

So far i've done the spark plugs, leads, dizzy, rotor button and fuel filter

 

tomorrow i'll be cheking the ECM

[surges/misfires on acceleration at normal running temp]

thanks guys, i done the plugs yeasterday and my auto shop just got my leads in (120 bones aus) so i'm hoping its it coz i'm running out bones real fast here.

 

I wonder if the catalytic converter will show up on the ecu diagnosis

[lsd]

In australia all pathfinders and navaras are lsd

[surges/misfires on acceleration at normal running temp]

Hi.

Iva 94 V6 manual Pathmaker.

it was surging/misfiring so i changed the distributor cap and rotor button and the problem seemed to be fixed but only for a couple of days, now it starts great and run perfect until it reaches normal running temperature and surges and misfires when accelerating under load (up to 2700 rpm) but it still idles perfect and starts perfect there is no engine light on. I would also like to know if the ECU diagnosis would show faults when the engine light is not coming on?

 

 

any and all help is greatly appreciated

 

cheers