lilredwagn
NAXJA Forum User
- Location
- South Carolina
Well, after changing my injectors to those from an LS1, my jeep started up much smoother and ran (seemingly) normally for the first 40 miles or so.
Notably, I *thought* I had a distributor making noise, but apaprently that was all in my head.
Then, on the way back from the advanced auto to pick up a new idler pulley, I notice, on the highway, that it is running cool - 185deg if you believe the gauge. 5 deg below where is usually sits - not worrisome - I chalked it up to better fuel flow (injectors).
Came up the exit ramp, and pulled to a stop at the light, and POOF the jeep dies. No sputtering, coughing or warning. In fact, I would swear it shut down smoother than when I turn off the ignition.
The battery is strong, and the engine turns over quickly, it just doesn't catch.
I didn't have any tools, but did check that there was pressure to the fuel rail (there was)
Thinking there was a possibility I had flooded the engine, I tried ignition with pedal to the floor, but no dice.
I tried several times to pull trouble codes with the ON-OFF-ON method, but had no luck, although the idiot lights did light with the ignition. Not sure if I'm a spaz or that's a sign of something wrong.
I know I'm probably a XXXXXXXX for posting this when the obvious answer is check spark, check fuel ..
When I go back, I will try it after letting it sit for hours (flooding), then try disconnecting the battery and reconnecting (reset the ECU), and if that fails, check spark and fuel.
I'll bring along my old injectors and spare coil, too, it looks like
Basically, I know what I have to do next, just thought I'd run a post off and see if anyone had run into a problem like this specifically related to changing out injectors. Probably not LS1 injectors since that was my bright idea :banghead: but anyway ..
Also, as an update on the injectors - the jeep seems to run smoother and definitely starts smoother (not as much roughness and shake on ignition), but as langer1 correctly noted it would, it did not fix the knocking on 87 octane problem.
Does anyone know if the injectors get cycled back by the ECU based on the O2 sensor (not under WOT), or have I been slowly flooding my engine by using these? It just seems odd that they would work for 40 miles ..
Notably, I *thought* I had a distributor making noise, but apaprently that was all in my head.
Then, on the way back from the advanced auto to pick up a new idler pulley, I notice, on the highway, that it is running cool - 185deg if you believe the gauge. 5 deg below where is usually sits - not worrisome - I chalked it up to better fuel flow (injectors).
Came up the exit ramp, and pulled to a stop at the light, and POOF the jeep dies. No sputtering, coughing or warning. In fact, I would swear it shut down smoother than when I turn off the ignition.
The battery is strong, and the engine turns over quickly, it just doesn't catch.
I didn't have any tools, but did check that there was pressure to the fuel rail (there was)
Thinking there was a possibility I had flooded the engine, I tried ignition with pedal to the floor, but no dice.
I tried several times to pull trouble codes with the ON-OFF-ON method, but had no luck, although the idiot lights did light with the ignition. Not sure if I'm a spaz or that's a sign of something wrong.
I know I'm probably a XXXXXXXX for posting this when the obvious answer is check spark, check fuel ..
When I go back, I will try it after letting it sit for hours (flooding), then try disconnecting the battery and reconnecting (reset the ECU), and if that fails, check spark and fuel.
I'll bring along my old injectors and spare coil, too, it looks like
Basically, I know what I have to do next, just thought I'd run a post off and see if anyone had run into a problem like this specifically related to changing out injectors. Probably not LS1 injectors since that was my bright idea :banghead: but anyway ..
Also, as an update on the injectors - the jeep seems to run smoother and definitely starts smoother (not as much roughness and shake on ignition), but as langer1 correctly noted it would, it did not fix the knocking on 87 octane problem.
Does anyone know if the injectors get cycled back by the ECU based on the O2 sensor (not under WOT), or have I been slowly flooding my engine by using these? It just seems odd that they would work for 40 miles ..