Using a 4t65E trans and a 3.4 Camaro engine with Fiero top end. What "wiring changes are needed and what computer (stock wires for the 3.4) but how to make the trans work (not using a "separate" ECM) ??? Thanks "Link" anywhere ?
"(not using a "separate" ECM) " ------------ " You will need a separate trans controller for the 4t65e." that's what I'm trying to get away from. I already HAVE a rebuilt 4t65E-HD sitting here. Can't the "same Reprogrammed ECM" control BOTH the 3.4 AND the 4t65E ??
Not with the OBDI ECU from the Fiero. The 3.4 would have to be set up to run with a PCM that would run the tranny. My best advice would be to contact DarthFiero.
"(not using a "separate" ECM) " ------------ " You will need a separate trans controller for the 4t65e." that's what I'm trying to get away from. I already HAVE a rebuilt 4t65E-HD sitting here. Can't the "same Reprogrammed ECM" control BOTH the 3.4 AND the 4t65E ??
Then you need a different transmission which doesn't require an electronic control module, like the 440t4. The 4t65e will require a separate trans controller. You cannot control it with the Fiero ECM.
You can buy a different aftermarket ECM that supports controlling both the engine and transmission you're using, and maybe it will work. But expect to pay $$$$ for one that does.
The 3.4 ecm also controls the trans, right? If so, then why not use that one? It won't be plug and play, but probably not any harder than wiring in a 3800
The 3.4 ecm also controls the trans, right? If so, then why not use that one? It won't be plug and play, but probably not any harder than wiring in a 3800
The Camaro/Firebird PCM can control the 4L60e, but I don't know if it will control the 4t65e.
Sounds like it will just be easier to put a 3800 In to it with the 4t65e and be done. (this cars going to get chopped, widened, different engine/trans anyway. just curious if a '98 3800 ECM "Could" control a 3.4 so it would have OBD2.) thanks
Sounds like it will just be easier to put a 3800 In to it with the 4t65e and be done. (this cars going to get chopped, widened, different engine/trans anyway. just curious if a '98 3800 ECM "Could" control a 3.4 so it would have OBD2.) thanks
No, the 3.4 is not OBD2, and does not have the appropriate sensors for it.
I have a sled-o-matic 4t60-E with Grand Am '96 ECM w/3100 V6. It's the same ECU as the 95 F-body 3.4 ... For some reason it's not going into 4th gear but that ECM is running in a Fiero (mine) just fine. I didn't do the conversion though...so don't ask me anything. Bought it swapped with a bad head gasket and then I had a 3400 longblock swapped in rather than spending money on 3100 heads...
All the 4TXX-E transmissions should run the same way. The HD or non-HD just has to do with a physical part, not the programming.
The problem with the F-body 3.4 ECM/older 3100 OBD1 ECMs is that they are not reprogrammable. They are also DIS, so you'd have to convert to DIS which is not a big deal...
[This message has been edited by lou_dias (edited 03-06-2015).]
4L60e(camaro also used in S10) transmissions could have shift pressure solenoid like the 4T65. between 1993 and 1996 they went through some changes. 94 and 95 could have standard torque converter or PWM converter. Also there were a few different PCMs for them. A 1995 S10 with automatic, 2wd, could have 3 different PCMs for 3.4. with out pressure solenoid, with PS but without PWM and with PS, PWM. If you can find a Camaro/S10 PCM for 3.4 with PWM torque converter control and shift pressure solenoid you should be able to make it work. The biggest issue is going to be is how it gets it's crank and cam signal. If the 3.4 you have has the hole for a crank sensor and notches on the crank, it will make that easier also. Or if you can get Camaro/S10 timing cover and components. By what I have looked at so far, if you have to use a distributor, it is not likely to find a PCM that will work. What year Camaro engine is it? What is the broadcast code number on the transmission? Should be a aluminum tag riveted to the housing near the passenger output housing.
[This message has been edited by cmechmann (edited 03-06-2015).]
Just thought of another option. 98 to early 2000s Astro, S10, Cseries with 4.3 PCM. Still uses distributor. but I think it has a crank sensor externally. The fuel rates and tables would have to edited. But I think the components are all there to make it work. Little will be plug and play. Get ready to study plenty of wiring diagrams.
