David D

1995 Nissan Maxima GXE 6Cyl3.0L - Engine

0

Hard start , Tach will read higher when cranking

problem started after a tranny swap. Hard to start, esp when cold. sounds out of ingition time , backfire and exhaust popping. will stall when you attempt to start only at idle. tends once running even when completely warm to idle around 1500 to 2000 rpm for about 30 seconds. ofter that runs like a champ. this is a manual tranny and the vehicle has some mods like a cold air intake, and tube headers , with HP 2.5" cat and piping thereaftere,

I am a tech and Im good but this is pissn me off, as Ive been chasing grounds and checking cotinuity for all the cps(ref) Phase and pos sensors. All are new by the way. all the wiring seems to check out. Ive been told that a ground between the tranny and block may be corroded and causing a bad ground so I instead of taking out the tranny and cleaning it I thought I would run some 8 ga. wire and grounded everything engine to tranny, tranny to chassis exhaust to chassis engine to chassis and chassis to negative. this did stop the tach from bouncing around it would go as high as 2k when just cranking around. I have checked fuel pressure and it is about 38 psi when cranking and then at idle is about 35 and as engine rpm increase it will peak at 45 psi. This car has been driving me nuts. please only ppl that have fixed this problem should answer this question as I have asked even better techs then me and been left waisting time on this . there is a fix , it is a common problem , but no one ever posts it.. give it up please, I love this car and I love beating the piss out of it but this is becoming embarising me . there is a u tube of a simiular car doing exactly this. This problem is electrical if you push the car without cranking it and pop the clutch its starts right up mint a 1 mph roll will do it but the starter is somehow killing the computers mmory and its getting confuesed as to where # 1 fire is . Im lost. please tell me I can just pull the tranny and clean up the mating surface for nothing more than my time. I thank you in advance if you need moe info please feel freee to email me at dadaudio@yahoo.com

all parts are carquest and new ...

battery , alternator, o2 sensors, crankshaft (pos,ref) camshaft the only one, bank 1 (phase)coolant temp sensor(computer) the maf sensor is reading about .51-.52 lbs/m at 700 rpm idle this car runs perf.once sad to say finally running

1967 camaro v8 Cranks and doesnt stop untill the bat is disconected. also it wont charge the battery. Ive replaced the starter solinoid and the voltage regulator. all wires seem to be intact and ohm out properly. when you disconect the battery it will not turn over untill you try to start the engine and again you have to disconnect the battery to stop it ( some knind of backfeed problem. ) also it seems to loose ingnition spark when this happens. this is an intermittent problem. thaks for you help

vehicle has 120k miles. no ignition spark at all cyls. Ive checked for power at the coil and it has it during the cranking cycle, but not with the ignition turned to run. Ive tested the coil pack and it is within spec. Ive also checked every fuse I could find and they were intact. car was running and then died while trying to accelerate from a stop with no warning at all. what else should i test for or replace

if anyone knows the answer please help. if anyone needs more info please ask me and i will repost this question with further info. thanks in advance

ive checked every fuse in the vehicle that i can find this car will not pass a mass state inpection because of this. anybody have experience with this problem , another friend of mine has the same problem with his 05 silverado 4.8l 5spd