car suddenly running full rich!!!
02-28-2013, 08:53 AM
#1
car suddenly running full rich!!!
Problem with my lsj, 2.7, 80s, gas tune.
Ok iv been running on my current tune for 3 days are so and have gone wot and had no problems and I went to data log it this morning and I noticed that my car has lost of its power doing wot(still makes full boost) and its running full rich 10.0, I data logged my base tune and it was running 10.2 to 10.4 and Im pretty sure this is not the tunes fault since just last night it ran fine, but what things could cause my LSJ to run full rich have a rough idle but not have any cels?
Ok iv been running on my current tune for 3 days are so and have gone wot and had no problems and I went to data log it this morning and I noticed that my car has lost of its power doing wot(still makes full boost) and its running full rich 10.0, I data logged my base tune and it was running 10.2 to 10.4 and Im pretty sure this is not the tunes fault since just last night it ran fine, but what things could cause my LSJ to run full rich have a rough idle but not have any cels?
02-28-2013, 09:22 AM
#2
ok I think i fixed it, i was able to tighten one of the bolts that holds the sc to the intake manifold, I think when I hit full boost during data logging it caused my sc to rise up and allowed some air to escape, this would explain why it suddenly went full rich when before it hadnt been, my afr during wot is now 10.9 to 11 so it seems fixed and the idle is smooth also.
02-28-2013, 09:43 AM
#4
ok I think i fixed it, i was able to tighten one of the bolts that holds the sc to the intake manifold, I think when I hit full boost during data logging it caused my sc to rise up and allowed some air to escape, this would explain why it suddenly went full rich when before it hadnt been, my afr during wot is now 10.9 to 11 so it seems fixed and the idle is smooth also.
18 ft-lbs. U can purchase a cheap torque wrench for around $50.
Glad u fixed the issue though.
02-28-2013, 10:23 AM
#11
My one ft-lb wrench is from Ace Hardware ($40 I believe), and is only used for my lug nuts on my cars.
My other two wrenches are Craftsmen.
I use them everytime I work on my car.
Last edited by Staged07SS; 02-28-2013 at 10:30 AM.
02-28-2013, 01:35 PM
#17
ok I got 3 of the 4 bolts out and tq down to spec the 4 was starting to stript the head so until I get new bolts im leave him be, Im cleaning the maf now as this is what james told me to do due to raining alot last few days. We will pray this works.
02-28-2013, 03:07 PM
#21
its either....
Metric hex bolts, Zinc plated class 10.9 steel, 8mm x 1.25mm x 35mm
or
Metric tap bolts, Zinc plated class 10.9 steel, 8mm x 1.25mm x 25mm
Cuz I ordered for my supercharger but I cant remember which were the ones I had used but those are the only bolts that I had ordered 4 for.
Metric hex bolts, Zinc plated class 10.9 steel, 8mm x 1.25mm x 35mm
or
Metric tap bolts, Zinc plated class 10.9 steel, 8mm x 1.25mm x 25mm
Cuz I ordered for my supercharger but I cant remember which were the ones I had used but those are the only bolts that I had ordered 4 for.
03-01-2013, 07:25 AM
#24
Im restate the problem, whenever the car has sit for a bit i can go do pulls in 2 and 3 gear a few times and have an 11.0 afr but after a few pulls my aft drops to 10.0 and it bucks pretty bad when u shift. No codes are being thrown, i have bolt sc down to spec and sprayed around it to look for leaks found nothing, cleaned the map sensor, maf sensor and filter. Problem still happening.
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