So i just got my car back from the mechanics the mechanic has done the coolant bypass i also got a new water pump and new spark plugs and now the car is misfiring really bad that it stalls when i come to a stop ive swapped the coils with my other 300zx and still the same any ideas? its a 92' 300zx na
Take the car back... If its not running right, they need to investigate. Especially if these problems have started as soon as you picked up the car.
As most know you have to be careful who has a go at your Z,most don't give a :bash: you may have to cop a loss :banned: Do your home work on any one be for you let them near your Z :rolleyes2: I have a guy here who is good but not as good as I like him to be,so I watch Good luck,and I tell you now he wont give a Good luck,ill bet its some thing little :zlove:
Is this a licensed mechanic? Did you pay for the work done? Did you get a receipt? In NSW we have The Dept of Fair Trading, I'd imagine other States would have a similar Government Dept. Lodge a claim, you have nothing to lose. An airflow sensor fault would log a fault code in the ECU.
Yeah he is licensed and i didnt get a recipe also havent paid for the job yet but i have the car and i think ill lodge a claim thanks for letting me know
Two very common reasons for stalling/running rough after a plenum pull, vacuum leak and cracked wires in the loom due to being moved for the first time in 25 years. If you feel safe letting the mechanic near your car again at minimum get him to do a proper boost/vac leak test.
If the plenum was removed for the cooling system bypass likely causes could be -biiiiiiig vacuum leak -incorrect firing order -a fuel injector or a coil pack not being connected If the water pump was changed your problem could be caused by -a poor connection at the PTU -a poor connection at the CAS -incorrectly set CAS Was the timing belt changed with the water pump?
As Fists says above and rob260 below Any of the wires that were touched in the bypass , Have a look where the heater core bypass was done and trace all the wires that were or would have to be moved. Hope that helps And check all the vac hoses as well
He may well of tried his best,the work he did do may be spot on. But its so easy to up set old wiring :bash: So just jiggle wires at idle near PTU and such,it may be that easy. Hard to keep ones cool,but try.:br::zlove:
Graham (Tektrader) & Alex (badxtc) are both on the forum & are very knowledgeable & helpful when it comes to zeds. Maybe pm them & see if either is able to have a look or even fix the issue. I would not be letting that mechanic touch the zed again as he sure doesn't sound like he knows what he is doing.
I can hear a blowing nosie from the back of the plenum i either think a loose wire or or a vacuum leak
