2mraid3r

Hi everyone,

I have a 93 pickup with a 22re that has 160k on the clock. I’ve had this truck for 5 years and taken great care of it. It has always had a distinct vibration at idle, so I just thought that was how these trucks ran. A few months ago, the vibrations got worse, so I decided to take a look into the problem. I started by looking at the injectors, thinking that maybe some of them were working better than others. I used a stethoscope on them and found that the #4 injector was ticking much louder than the others, so I went ahead and replaced them with some Flamethrowers (with adapters). That’s when the hesitation started. I thought it was the injectors, but I went to listen to them and they sounded much better than the old ones. So, I started elsewhere. I have checked/cleaned/replaced so many things, but nothing seems to make the symptoms better. Here is what I have done:

-cleaned throttle body
-replaced TPS
-replaced coolant temp sensor
-replaced spark plugs
-replaced wires
-replaced distributor cap
-flushed coolant and replaced it
-changed the tranny fluid
-replaced the dreaded timing chain (rattle of death)
-replaced air filter
-replaced awful-to-get-to fuel filter
-trickle charged the battery
-replaced the battery terminals
-patched up any exhaust leaks and replaced the gaskets
-checked the cat to see if it was clogged (nope)
-checked compression (170 on all cyl)
-replaced the o2 sensor
-ran some seafoam thru it

What else is there to do?! From my experience with motors, it feels like it has a vacuum leak or a lean miss when it’s idling and somehow flooding out during the first bit of acceleration (when warm). I don’t know what else to do, but it is quite frustrating to drive, as well as dangerous in traffic because of the hesitation.

Any advice would be greatly appreciated!

Sincerely,
Lance