montanaboy27 Posted April 15, 2016 Share Posted April 15, 2016 OK, so here's the skinny... I bought this car from a guy and we'll just say he wasn't entirely truthful on everything that's wrong with it. I have so far pulled the motor and replaced the head gaskets, all the seals, water pump etc. Got it all back together and only then discovered that it had a serious case of torque bind... pulled it apart and replaced the duty solenoid 'C'... took it for a drive and things seemed to be looking up. I drove it to work for about a week and now I think it has an issue with the IAC valve... what I've noticed so far is that at constant speeds it seems to "surge"... very slightly & consistently, but the worst part is it bogs down when accelerating from a dead stop... also shifts pretty hard from first to second, though I've heard that is relatively normal for subby's... I also My plan is to remove the IAC Valve and clean it out... the engine was very full of carbon when we had it all apart. After it's at operating temp, the idle drops to around 500... I think this is too low which also leads me to the IAC. I haven't checked the MPG yet, but I filled it and only have about half a tank left with roughly 100 miles traveled thus far. I'm unfamiliar with what I should be getting for MPG's on this car. Another thing I've observed is that when it shifts at higher RPM's, I hear a "sucking" sound from the drivers (?) side engine compartment... not sure if it's related or just another thing that I'll have to turn my attention to eventually... Just wanted to poke my head in here and see if anyone has any other suggestions for me to try. I thought maybe a fuel pump or fuel filter as well, but don't know if these symptoms fit the bill or not. Any thoughts & or suggestions are greatly appreciated! Thanks in advance! MT Link to comment Share on other sites More sharing options...
wtdash Posted April 15, 2016 Share Posted April 15, 2016 Hi, CEL on? - get the codes. Full tune-up done yet? NGK plugs and wires? The low rpm, surging, bogging, sucking sound, COULD be a vac hose missing/disconnected - there are more than a few on there to reattach after engine installs. MPG depends on your driving habits, speed, etc. At 60mph I'll get upper 20's; Over 75 and around town it's low 20's. The ATF been thru the 3 cycles of Drain>Replace>Drive during/after the Duty C replacement? You only get 1/2 out of the pan from a drain...rest is in the TC.....this helped (somewhat) on my 1-2 shift. Link to comment Share on other sites More sharing options...
montanaboy27 Posted April 15, 2016 Author Share Posted April 15, 2016 Hey Sub! No CEL or any indicator lights. The plugs and wires looked fine, but it's certainly an option. (Looked them over & cleaned when the motor was on the stand) I've checked all of the vacuum hoses and even went around with starting fluid listening for a vac leak... so I think I'm good there, but like I said, I'm not against re-checking things! Thanks for the MPG info, as I am flying blind with this one... I know what it says online, but that may differ now that it's 19 years old! As for the ATF, I figured I'd do everything minus the flush. I pulled the pan and replaced the filter & cleaned it out really well. I used Lucas Transmission Additive for old/slipping transmissions, then filled it up... periodically getting in and shifting through the range. Seemed to be fine at the time. I know there was still old tranny fluid in there from the TC, but the majority of it came out. I'll re-check what you came up with just in case! Thanks for the quick reply! If I learn anything, I'll post back here! MT Link to comment Share on other sites More sharing options...
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