RyanBelesky

I've searched for boost leaks last fall when I rebuild the truck: None at all from what I can see at least, I can get 55psi on command- quad limiter set at 57. Coolant has never gone above 198 deg so that seams up to par as well (I flushed the system when I rebuilt the truck, new water pump installed, washed rad, condenser and intercooler up). Engine oil temp seams a bit high IMO but maybe I'm over thinking that one...

So: I can't tow (8000lb camper) in OD and I"m ok with that (low rpms due to 3.55 and 35" tires lol) Cruising in 3rd at lower rpms (1700-1900 on gravel roads) is also a bit warm too on the egt side. Question: The Quad EGT reads a 100ish deg lower than my glowshift max tow gauge around 900+ deg, some places I get the max tow to 1200 but Quad is showing 1100... Which should I trust? Both probes are side by each in the manifold. Water temp sits great at 195 and Oil temp stays at 208 on the quad. Towing boost also seams low- rarely over 17psi cruising (19-2100rpm). The motor is studded with 425's, 62 71 12 (I think) DPS turbo that's like 13/14 years old, 150hp edge sticks that are that old as well... In some personal opinions: whats safe prolong egts? I've read 1250.... Quote Edit

On my '98 that ground wire is bolted to the ABS system. The truck is rear wheel ABS only tho...

Well I figured it out- got a dash from a 1998 gasser and everything works. Even after 10 years of being a dead truck there's no check engine light or warning lights- and yes the bulb works haha. I've been driving the truck around and everything (for the most part) seams great- new track bar, new front KYB shocks going in next, and gotta snug up the steering box a bit. Pretty proud of what I've accomplished this summer on this project and to be able to drive my old truck once again.

Ok so after searching and searching on a way to make a 2001 dash harness work with my 1998.5 truck I’ve given up: pulled the dash and will be getting another dash harness.. so out of curiosity does anybody know if all 1998 dash harness are the same?? Mainly because I’m keeping my truck simple with manual windows, manual locks, no over head display, no heated seats, no power mirrors. Just want AC and Heat to work haha. (I’ve already realized I’ll have to use the electronic part of the heater control for my 2001 HVAC- looks simple enough since there’s only 3 wires going from the control to the motor) or should I just change that setup out as well to the cable operated style??

Thank you for the reply- but I feel you mis-understood what I wrote tho: the ECM, PCM, & Gauge cluster are all from the 1998.5 24v as most of the wiring. The only wiring that isn’t 1998.5 is the 2001 dash harness. It is somehow different because there is one red with orange wire on the 01 dash harness (if I remember color right) that doesn’t match up with the 1998.5 PDC harness... there may be more but I haven’t dug that deep into it. I did notice that the CCD wires match up (but there’s 3 pair on the 1998.5 and 2 pair on the 2001. Thanks again.

Yes it is. I like projects and I’m enjoying this one as well. From a bunch of reading that I’ve done, and from just over thinking my situation: I think I wanna try a 1999 dash harness and hope for the best.

So here’s the project: 1998.5 24v: ECM, PCM, engine harness, pcm harness, engine bay harness, and gauge cluster all 1998.5 from same truck. The cab/ dash harness is a 2001 gasser. My gauges power up fine, shows rpms but nothing else. Gauges appear to pass self test. Codes 920, 921. DOES NOT give me a NO BUS... I installed my brothers 1999 pcm and no change, took my gauges and pcm to his truck: my pcm works and his gauges work in his truck, my pcm and my gauges work in his truck. His pcm and my gauges work in his truck.... So: I feel that the 2001 dash harness has different wiring than the 1998.5.... also my head lights don’t work properly. My question now: can I get a couple wiring diagrams of the main grey plug under the dash so I can move the wiring around to make this work or am I better off trying to get a 1999 dash harness and see if it works with my 1998.5 engine bay harness??? Thanks for any input and sorry for a long first post but I wanted to be thorough.