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I tried searching this site and the internet and couldn't get an answer. I passed smog (California)! Last time only took me 7 tries and all of your help. However my Nox is still pretty high, close to failing. Max at 15 is 711 mine was 448 Max at 25 is 613 mine was 567. I have my transducer...

So I've refreshed the grounds and rechecked. Yes, I'll check again when I dive back in but it's 100 degrees so I'm taking a break. Here's the issue : TPS is reading 4 ohms, yes 4!!! Checked it twice because it's absurdly high. I can't get the tps in check because I need the ohms to be under 1...

I tried to find a dedicated thread for Renix Exhaust Manifold. I am looking to see exactly what tips and tools I will need for a Manifold Swap. 4.0L Automatic Renix Injection system. I already have a new replacement Dorman Exhaust Manifold, A New Exhaust Donut, A New Manifold Gasket New...

As the title states, My vehicle surges at about 12 minutes of driving, then loses power and if I am under 20 miles an hour my vehicle may die (as of today that is). I am thinking the main culprit is fuel pump and fuel filter. Also, it struggles to start occasionally (this is as of a week or...

1990 XJ Base Here is the issue, the right and left blinker on both sides at the front of the Jeep will blink only when the headlights are off but not when the headlights are on. I believe it could be a grounding issue but am also wondering if the incandescent blinkers could cause a different...

This is my first post and I'm at a total loss. Please Jeep guys, help. I've become a mechanic over the past year... 1990 Jeep Cherokee, 4.0L Renix Bosch 746 Reman Spark plugs NGK 23553 O2 sensor New TPS - checked by mechanic to be on spec New IAC - checked by mechanic to be on spec Was running...