Problem With Starting My Car Y'day Arvo

[ryan101]

Y'day after work went to start my car after is had been sitting for 8 hours, I turned the key it started but is strugled to build revs to idle (900rpm) the rpm's went up in stages 200rpm 500rpm then finally when i touched the accelarater it went up to 900rpm? i thought oil pressure? or something to do with cold start?

the only thing i touched was the afm all i did to that was make sure the plug was in properly

i have another question aswell, i think my afm is playing up my car just doesn't feel the same since last fri nite when i had a major boost cut, it was like a hit a wall then i took my foot off the accelerater abit it started to boost again! now it feels different, could it be in some kind of limp mode? it still revs past 3000rpm just feels a bit slower

is there a way to check the afm is working 100%? with afm do they either work or not work? or can they still work at only 50% if that make sense

thanks

[paulr33]

if stock ecu, get nissan consult (cable and software) you can buy it, check for NewKleer (he makes them) on the forums

then check the stock ecu diagnostics via the software it will tell you if the AFM is toast

if AFM is toast - ie completely dead REV is capped at 2500rpm

but if its dirty / mangled it may work enough to run, but make fuel injection run like ass, ie botched airflow vs real airflow

check its plug, check for damage, visual inspection, check with elec/carby cleaner

[scotty nm35]

Do a search, from what you are saying the airflow meter has dry solder joints inside on the board. There is a how to for repair if you do a search. As a temp solution you could possibly cable-tie the wires down tight one way or the other but it needs to be fixed or replaced.

[Muff]

have you put diffrent fuel in latley???

sounds like it is fueling up.. could be your afm or your fpr......

if its a stock ecu, do a reset and put it in learn mode....

to reset Take the terminals off the battery, then turn the lights on to get rid of stored power.....

put back together and turn the key... it will be in learn mode for 30 key turns... if it was your fuel it will sort it self out.... if its ur afm, clean and replace if you have tooo...

good luck

[Muff]

also check your plugs.... could have givven you the wall hitting experience.. and be down on power..

[ryan101]

also check your plugs.... could have givven you the wall hitting experience.. and be down on power..

thanks muff i will try anything is there a way to check voltage with a multimeter for the afm?

im waiting on new coil packs i will check and change plugs when i get the new coils

and for the fuel i use the same fuel from the same place everytime i fill up

[ryan101]

Would a afm that is playing up make a car hard to start? Would it make the revs strugle to build to idle?

[TUF250]

did you ever find out what was causing this mate? i have the exact same problem!

[ryan101]

Tuf250, i Neva sorted it out I think it's when it's cold the oil maybe a bit thick I used penrite 10w50, next oil change I'm Gona try a different oil