Hey guys, just trying to eliminate some factors here before I buy more new parts. I originally bought a chip from Davis that he had worked over for a 5 speed swap, I think it was one of his original tunes. But the car's still running kinda like shit (does a lot of bucking that Josh always had a problem with).
I'm still running the T25, Crane H260 cam w/ 1.6 rockers, new EP375 fuel pump, half the sensors are new, checked/fixed all the wiring in the injector/TB harness, vacuum lines look good. Just installed brand new Ford C302s and it seems to run much better after it learned the idle, but it still bucks quite a bit and idled pretty high in neutral after I took it for a drive. Before it relearned the idle, it was running violently, running up to ~1200 rpm then almost stalling while idling. Then it seemed like it became steadier and more normal (~700rpm) than I've ever seen it. I haven't had a chance to really get on it to see what it does, it's not registered yet so I've just been driving it around the neighborhood, plus the motor's only got ~300 miles on it still.
Anyway, next plans are to try another FPR or ICM/coilpacks or ECM and I should probably try changing the fuel filter too, but I wanted to see if anyone has another known good bin that I could try too.
if you upgraded the pump it is probably running way rich at idle especially with bigger injectors. Between that and your IAC steps being out of wack with the cam I would say you are lucky it runs for any lenght of time lol. Sorry for the negative post but the computer can only adjust a small percentage for fueling and iac steps. You probably need to take it to someone who can tune it for you. IMHO for those mods you need a wideband.
I will look in my stash of TGPSE bins for one that might get you close from my 5 speed with the cam, ls1 injectors and walboro 255 pump. It might work better than you have on there. I assume you can reburn your chip correct?
Ken
The pump is the same as factory, and the injectors are rated less than ours at Ford fuel rail pressure but they're about evened out with ours. I know it could still stand some tuning with those, but imho the bigger differences are the cam/rockers. A tune for LS1 injectors for me will probably run pig rich, but I'm open to try it for sure. Yea, I can burn. I have a couple of virgin spare chips laying around.
Davis had burned me the original chip knowing what cam setup I was going with, and I trust in his chip tuning abilities, but I know some progress has been made in the past few years in getting the 5 speed conversions to run better. But yea, I'd appreciate if you could look through your stash and send anything my way that you think might be helpful. Thanks Ken
Tony
Sorry I forgot about this, ok I will look for something towards stock 5 speed I have for you tonight. All my old bins are on another computer.
Sent ya an e-mail.
Ugh, I'm trying to read the chip Davis burned for me with my Willem programmer, but I must be messing up the configuration because I'm reading back almost all 0 bits. It's a 29C256. I plugged it back into the car and it definitely still runs the same, so I didn't erase or short anything.
I was able to read an older 27C256 chip I had laying around no problem. Might try burning the base 5 speed program I have to a blank 27SF512 chip to see if I can do that successfully, and if it runs.
Get tuner pro fro free.
I'm in PA I'll email you the bin tonight it is on my other computer! Hang tight!
No probs, I can wait a bit. I appreciate it.
I've been using Tunerpro RT to datalog. I don't have the actually .bin file that's on the chip currently, however.
I took the car for a drive last night.. it runs like total asshole in open loop, then rpms cycle between 500-1300 and it usually stalls. either within a few seconds or after a minute. It's been hard starting too, taking quite a few cranks to get it going, and it's not a strong start. In closed loop, the idle is much steadier, but it's definitely not strong.
The BLM was sitting right at the max at 156 for most of the cruise I went on.. I finally bought a fuel pressure tester so I'm going to see what kind of rail pressure I'm getting. I'm wondering if maybe the FPR is bad. It dropped to 134 once it fell below 2 mph, then steady climbed right back up to 156.
It also seems that my voltage is very low, sometimes dipping into the 11s. I know the Cutlass used to run around 13.5 when running, might try swapping alternators. Hopefully I don't have a ground problem, I don't want to open up that can of worms again. It seems when I was decelerating, either due to slow engine speed or hitting the brakes (lights + pump), is when voltage when start dipping into the 12s. Battery is only a month old.
Sounds like you need some help that is way lean.
I emailed you a bin as promised. One of mine so no worries about infringement........ Email me the results in a log file if possible.
Ken