apologies in advance for my novel promise its a better love story than twilight
tldr skip to last 2 paragraphs
having an issue with my vr 5lt automagic so long story long i have swapped my vr v6 to 304 auto using a vt roller motor and matching 4l60e
im running it on a vs bt1 5lt loom and vs s3 non sequential ecu the ute has a full vs s2 statesman dash including climate control level 3 cluster
technically the cluster is a vr v6 berlina one the engine loom was a used one from u pull it about 8 years ago it was a bit rough so i cleaned it up and replaced the temp sensors and drivers side earth as the pvc was cracked and missing and reconnected the injector drivers was on gas at some point and added the vt 4 pin sourcing the plug from a vr v6 o2 sensor still retaining the vs black??? 3 pin distributor plug and pulled the coil wires out away from the back of the motor and added vt 2 pin coil plug then re wrapped the entire loom
the motor and box combo came put of my vq statesman about 6 months ago where it was running and driving with no issues running the full vt dash and engine loom ecu bcm ect
now since ive put it into the vr with the vs loom it has had issues with high idle or hard shifting iac and tps issues respectively nothing new to me started with the high idle changed the iac no improvement swapped the throttle body for a spare whole lot of rooting around and find an iac the works right then the tps plays up hard shifting hanging gear shifts ect so went thru the same routine again no improvement
bit the bullet and do the inlet manifold gaskets had the motor for 3 4 years daily driven it no idea when or if they have been done
if you know 5lts you know odds on needs manifold gaskets coolant galleries where very close to worn thru
inlet manifold was a bit ugly around the coolant ports again if you know 5lts common so grab the spare vt manifold drill and tap the 1 wire temp sensor and the mat sensor and machine up a vac port for the map sensor drill and press fit that
throw it all back together same issue cant remember if it was iac or tps playing up keeps switching between shifting hard and stalling at idle and in gear throw new injectronics iac and fuelmiser tps still same issue so i have replaced the iac and tps wiring from the plug to just inside the fire wall grommet harvested from a vs v6 loom kinda pissed off at this point as ive wasted a perfectly good vs v6 loom and no still no improvement
while doing all that ive thrown spare ecu map mat and temp sensors ignition modules and coils at it cleaned up all the earth points and added the alternator bracket to body and body to ignition module checked the fuel pressure about 55psi on prime and 45-50psi idle
solid 14.2 .3 volts out the alternator so not a low voltage issue at the battery speaking of voltage the previous tps was 2v something closed and 4.5 4.7 wot havent had the mental capacity
to check the voltage range on the new one yetwhen its the iac playing up it will idle high around 2000rpm or it wont idle at all and it will hunt up and down wildly untill it stalls unless i hold the throttle open and it will at set speed hunt not overly wild but you can feel the engine power come and go even with cruse control on however when the tps is playing up the idle is spot on 800 850 in gear 1000 in park keep in mind v6 tacho but it will run smooth exactly the way it should even with shifting down with a little engine braking rpm bump into 1st but it shifts hard 1st to 2nd and 2nd to 3rd and holds gear untill 25 30kmph and 60 62kmph literally chirps second under light acceleration
apologies for the long winded story but i have run out if ideas and i have done a whole heap of the usual suspects as well as some of the not so usual suspects and its not exactly a stock original car so details matter hoping some one might have an idea where to look next hopefully before i rapidly disassemble it with arm strong swing press
and burn the rest regards chuck
