No start after Injector swap Bosch 0 280 156 045 HELP!
Discussion
Hi all,
I decided to bite the bullet and install the Bosch 4 hole injectors as recommended on the injector thread on here, but I have major problems and the car is blocking my other car in the garage so not ideal.
I've just fitted these injectors and now it massively over fuels and will only start from cold for 30 seconds then dies. It will start with my foot on the floor but will only just idle at WOT. Eventually it'll sluggishly start to rev and then pick up and rev quickly but won't idle and then won't restart. It seems if I remove stepper and leave it open to atmosphere, open the idle screw all the way out it will just about maintain an idle but isnt happy and the garage stinks of unburnt fuel. So I think I've narrowed it down to not enough air
Stepper is working, I even bought a new one from Land Rover, has a nice fat spark from the king lead and again at the plugs, fuel pumps priming and runs when the engine is running. No codes in Rover Gauge. TPS range is 10% to 97%, no leaks that I can find. Occasionally after a session trying to get it to work I get a code 'lambda out of trim' which I assume is due to flooding. When its cranking the injector duty is 2% to 4% and when I finally get it to catch the duty cycle increases as it revs.
Summary - Original 14CUX ECU, main cat, no pre-cats and running fine before the work (yes I know if it ant broke....)
Changed injectors, added plenum spacer and sealed correctly, no air leaks
Will only fire up from cold off the key and wont rev just dies when peddle pressed
After its initial cold start it will eventually fire at wide open throttle and nearly 30 seconds of cranking
Idles only at wide open throttle, can gently close throttle but wont idle.
Once idle at full throttle the revs sluggishly start to come up until about 3k rpm when it revs a bit quicker. Garage full of fumes, no idle cuts
out.
TPS 10% closed and 97% open
Stepper new but new and original both work the same way.
After a while of trying stepper stops adjusting and sits at 37% - 40%. ECU confused with rich mixture?
Here's a vid, you can see the tps at 97% as the throttle is wide open and its idling at around 1000rpm. I've never yet been beaten by a problem on a car but this one is looking to be the 1st. Either TVR specialist and many many £££'s or I sell as is at an incredible loss.
And one with the MAF set to Direct
I decided to bite the bullet and install the Bosch 4 hole injectors as recommended on the injector thread on here, but I have major problems and the car is blocking my other car in the garage so not ideal.
I've just fitted these injectors and now it massively over fuels and will only start from cold for 30 seconds then dies. It will start with my foot on the floor but will only just idle at WOT. Eventually it'll sluggishly start to rev and then pick up and rev quickly but won't idle and then won't restart. It seems if I remove stepper and leave it open to atmosphere, open the idle screw all the way out it will just about maintain an idle but isnt happy and the garage stinks of unburnt fuel. So I think I've narrowed it down to not enough air
Stepper is working, I even bought a new one from Land Rover, has a nice fat spark from the king lead and again at the plugs, fuel pumps priming and runs when the engine is running. No codes in Rover Gauge. TPS range is 10% to 97%, no leaks that I can find. Occasionally after a session trying to get it to work I get a code 'lambda out of trim' which I assume is due to flooding. When its cranking the injector duty is 2% to 4% and when I finally get it to catch the duty cycle increases as it revs.
Summary - Original 14CUX ECU, main cat, no pre-cats and running fine before the work (yes I know if it ant broke....)
Changed injectors, added plenum spacer and sealed correctly, no air leaks
Will only fire up from cold off the key and wont rev just dies when peddle pressed
After its initial cold start it will eventually fire at wide open throttle and nearly 30 seconds of cranking
Idles only at wide open throttle, can gently close throttle but wont idle.
Once idle at full throttle the revs sluggishly start to come up until about 3k rpm when it revs a bit quicker. Garage full of fumes, no idle cuts
out.
TPS 10% closed and 97% open
Stepper new but new and original both work the same way.
After a while of trying stepper stops adjusting and sits at 37% - 40%. ECU confused with rich mixture?
Here's a vid, you can see the tps at 97% as the throttle is wide open and its idling at around 1000rpm. I've never yet been beaten by a problem on a car but this one is looking to be the 1st. Either TVR specialist and many many £££'s or I sell as is at an incredible loss.
And one with the MAF set to Direct
Edited by StuVT on Friday 26th February 12:27
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