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  1. The Iron possum

    Do y’all name your rides? Post em up.

    My 95 is slow, silver and sometimes plays dead. Hence the nickname “Iron Possum”
  2. The Iron possum

    95 TBI Hot Miss troubleshooting

    My issue was burnt plug wire(s). They were Taylor pro and less than 6 months old when the issue started. Just ohming them cold didn’t show any issues. I put a cheap set of Autozone 7mm wires on just long enough to determine that was the problem. Now I’m running blue streak 8.5 mm with thermal...
  3. The Iron possum

    At my wits end.. Looking for any idea.

    Thanks for the clarification on EGR operation by Schurkey. That’s the great thing about this forum is that we all learn and can fine tune our knowledge. If the EGR valve is partially blocked open by carbon buildup, it can mess with the air fuel ratio during cold engine operation and cause a...
  4. The Iron possum

    At my wits end.. Looking for any idea.

    Sounds like bad wire/connection causing fuel pump relay to drop out momentarily. Could be why it ran fine on starting fluid. Disconnecting MAP drives voltage input toward 0 (no vacuum) and ecm responds by dumping in fuel. Means either you are getting too much air or too little fuel under normal...
  5. The Iron possum

    95 ecsb rear quarter windows leaking

    If someone could post a pic of the Type A seal we could see if the shape was the same. I’d pay for 94 seals from LMC if I thought I could fit by cutting and gluing. Like building an O-ring out of round rubber. Just need to know if the backside will fit in the trough of the 95 frame. 2.5 hrs by...
  6. The Iron possum

    95 TBI Hot Miss troubleshooting

    I’m looking at heat boots now for the new set of wires. Hadn’t thought about megging plug wires. Would be nice if the parts stores carried a plug wire tester. Thanks for feedback guys!
  7. The Iron possum

    95 ecsb rear quarter windows leaking

    I don’t see any adjustments on my 95 ecsb. I found your post searching for “quarter window”. Mine are also leaking and one has a torn rubber seal. Quarter windows start to rattle a little and leak when the rubber loses its elasticity. I’d like to just replace the seals, but it looks like on LMC...
  8. The Iron possum

    95 TBI Hot Miss troubleshooting

    I’m cautiously optimistic that the miss is fixed. Bought a cheap set of plug wires just to rule out wires as suspect. Truck runs great with no miss or hesitation. Plug wires were Taylor pro 8mm and only 4 months old when issue started. Headers must have gotten them. Strange because they ohmed...
  9. The Iron possum

    Truck sputters and backfires when hot

    Heat/load misses seem to be a common topic on this forum. I’m currently chasing one of my own. If you google “Symptoms of failing (insert component here)”, nearly every hit you get will list a miss or poor engine performance as a symptom. MAP, Ignition Control Module, pickup coil, distributor...
  10. The Iron possum

    95 TBI Hot Miss troubleshooting

    Here are 2 screenshots of rough acceleration. This is just normal coming up to speed with 2 shifts. Top image is RPM (green), spark advance (blue) and MAP (red). Bottom pic is RPM, Advance, and O2 (red). I don’t have a wideband O2, so no data there. I have a full set of tuner pro Rt data logs...
  11. The Iron possum

    95 TBI Hot Miss troubleshooting

    Replaced distributor just to rule it out. Also put in my spare MAP sensor. No change in performance. Still drops out like a miss or stumble during acceleration. Will replace plug wires tomorrow (always wanted a spare set) even though these have ohmed out good. Running out of things to...
  12. The Iron possum

    95 TBI Hot Miss troubleshooting

    Distributor is not a Delco. It’s the autozone Duralast. The pickup coil I removed didn’t look burned, but I replaced it anyway with no change. Even with a new pickup and ICM, could there be enough slop in a 6 month old Distributor to cause a miss during acceleration? With truck idling (cold), I...
  13. The Iron possum

    95 TBI Hot Miss troubleshooting

    Has anyone ever had an ignition switch start to go bad and cause a miss? From the Haynes book, power to the coil comes directly from the ignition switch. If the switch contacts weren’t making up all of the way, could that cause an issue? I’m running out of things to test or replace.
  14. The Iron possum

    Engine replacement-list of components/sensors to replace

    Since new “bad” parts can complicate troubleshooting on a new install, you may want to install them on the old engine, assuming it runs, and drive for a few weeks to see if they are good or not. Things like temperature sensors, O2 sensors and ignition coils are pretty easy to swap. Fuel pump is...
  15. The Iron possum

    95 TBI Hot Miss troubleshooting

    I haven’t posted in a while but now need some help troubleshooting. Truck runs fine for about 15 minutes but then starts missing, especially on acceleration or under load. It ran fine for the last 6 months after engine swap. Many of the parts that were transferred over during the swap had been...
  16. The Iron possum

    95 Tahoe troubleshooting slight surging

    The TPS is not a replaceable sensor. It’s integral to the throttle body on a 95 (at least mine is). You can test it by disconnecting plug and then checking voltage between the gray (+) and black (-) terminals. With key turned to on (not started) should be about 5 volts. Reconnect plug (key off)...
  17. The Iron possum

    Guage cluster led install: success!

    I had a similar issue changing a turn indicator bulb. When I reinstalled the gauge cluster, the flexible strip didn’t make full contact with the dash connector in my 95. Pulled cluster and cleaned contacts lightly with alcohol and cloth then straitened and “fluffed” the flexible strip. It worked...
  18. The Iron possum

    Grandpa’s Wild West K1500 moves to FL

    That’s what you call a unicorn! Well kept, low mileage and clean interior. Hoo-boy that’s nice!
  19. The Iron possum

    Guage cluster led install: success!

    Great “as installed” pics and reference to specific parts. Upgrade to LEDs is on my list after upcoming engine swap.
  20. The Iron possum

    Low voltage

    Another quick check on the alternator if you don’t have a meter handy is to check the backside center of the alt for magnetism with truck Running. If it’s charging, center backside of alt will be magnetic. I typically just touch it with a screwdriver and it will pull it right in. I’ve used this...
  21. The Iron possum

    Engine ticking noise finally fixed

    Same here. Haven’t had any quality issues with AC Delco plug wires-after getting them on. They just don’t have a good positive “snap” to them.
  22. The Iron possum

    95 TBI Rough idle first 45 seconds

    Well once again the forum prevails. Replaced distributor and everything works. Idle is nice and smooth. Truck runs great since I’ve replaced every sensor and controller as well as new plugs,wires and Egr. Thanks to all for the help!
  23. The Iron possum

    95 TBI Rough idle first 45 seconds

    Thanks for the link Big D. I came across some similar info from the same folks about a week ago but didn’t see the specific starting sequence for timing and injection until I opened your link. Hopefully will have new distributor installed tomorrow. Had to settle for exchange of Duralast at...
  24. The Iron possum

    95 TBI Rough idle first 45 seconds

    Thanks for the input guys. Verified Map working so that ruled out last of the input sensors to the PCM for fuel/timing. Have distributor pulled and ready for change. If it’s bad, it will be the third duralast in 1.5 yrs. My momma might have raised a fool, but it was my brother. Going to get...
  25. The Iron possum

    95 TBI Rough idle first 45 seconds

    Coolant sensor ohmed out to match temperature chart when cold and hot. I pulled and cleaned ground also and then replaced it for good measure with no change. Also pulled and cleaned other manifold grounds. Replaced EGR since it was original and symptoms matched a stuck open EGR valve. No...

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