Ignition related issue, no tach
Trying to diagnose on my 94 TT, no tach and I have a miss like a coil is down or at least 1 cylinder down. Rich dumping the fuel, its ignition related.
I've had the upper plenum off many many times doing plugs wires compression checks all that, and have flow-tested my injectors, I have two sets of coil packs and 2 PTU's (from this and '93 VR4).
Both Power Transistor Units test fine per Stelath316 and using a battery/meter to test.
The '93 VR-4 coils: one of the coils ohms out like its going bad I'm not using those.
I'm running the factory 94 Coils that all ohm out good.
After swapping the PTU's back and forth and getting nowhere and testing them again to verify ok, I've been trying to check wire continuity between the ECU plug and the PTU connector.
'94 Fed spec TT, https://www.3swiki.org/ECU:_94-95_TT...l_Spec_Pinouts
Pins 10, 11, 23 on the 26-pin C52 connector are the 3 PTU wires
On the PTU connector side. the 3-pin connector 11,12,13
http://stealth316.com/2-pwrtransunit.htm
if I try to ohm out through a long test extension wire, doesn't matter which I try 11 12 or 13 I get a reading of like 30.x on all 3 at the same time instead of the 0.0 or 0.x I'm looking for from one of the 3 singular I'm trying to check.
hard to verify I'm getting solid connection through test wires and small-nail I used to probe a female connector inside the car at the ECU plug..
I DID have a MAF Translator PRO previously installed which I reverted back to stock at the ECU plug. All wires were soldered/heat-shrinked and I'm 99% sure my issue isn't a wiring issue there.
Any tips recommended I'm banging my head.
-Taj
