Picked her up 2 days ago...
A couple issues that ive run in to...
The cars been flawless, firehawk (Chuck) and his partner Brent did an excellent job with the entire conversion, they worked with me and understood that Iwas on a budget, since I was on a budget, they installed and troubleshooted many parts on the car for me, and didnt half ass not one single thing.
The car though has a little problem that absolutely no one can solve.
On first start up whenever I crank up the car it runs perfect, it idles a little rough but doesn't seem to have any issues, even when you rev it up (out of gear under no engine load) it revs up what appears to be smooth and consistent and driveable sounding...
Now when you put the motor under any load, the engine bucks and stumbles and is barely drivable, Chuck Changed the Cap & Rotor, checked the crank angle sensor, changed out the plugs (NGK Coppers gapped .040 over), used that little tool (I forgot the name), checked ignition timing, and made sure all injectors are firing.
Let me mind you Im running an 86NA Chassis & Wiring harness, 87 Turbo ECU, Dual/Side Feed injectors (they have been cleaned and flowed, and 87 o2 sensor.
We adjusted TPS, blocked off AIC, and looked everything over.
Everything looks fine, but the motor runs what seems to be ULTRA rich at low rpm (800-3000'ish rpms), it is NOT an issue related to the firing of the injectors (Sequential fire v. Batch fire), it runs like CRAP, for example if im driving from a stop, and engage the clutch, it will drive of course, but is running so rich it will barely accelerate, but as the rpms go up and the closer the needle goes to boost (on my boost gauge), the less it stumbles, and finally when im at the mid 3000 rpms, it clears up PERFECTLY and runs absolutely flawless. (Under boost it runs flawless)
This is NOT an issue related to plug gap, o2 sensor, or anything.
heres the reason why...
When disconnecting or connecting the o2 sensor, it runs the exact same.
We tried an 84Turbo Automatic ECU to see if this is an ECU related issue, but the outcome came out to be the same, ran like crap.
Now every 2 hours or so, out of the blue, out of no where, not related to any specific RPM, something odd happens and it runs perfect, not ONE miss, not ONE jerk, EVERY engine RPM and EVERY engine load, throttle position, doesnt matter one bit, it runs absolutely like it should be running for a little over 30 seconds, and then after those 30 seconds it starts jerking and running like crap again.
Tonight I popped off the pins to the AFM (Air flow meter), and pulled it out (with the engine running), the engine was idling at the time, and as SOON as I pulled it out, the rpms went up about 200, and it idled seemlessly perfect!
I revved the motor up a bit (of course it wont rev over 1500'ish rpms since the AFM is disconnected) and it revved up perfectly smooth, and it wasnt missing at idle or jerking plus the RPM's were consistent and rock solid.
I dont know what else to do...
Ive ran out of ideas...
No I havent tried a Diffrent AFM, but will tomorrow morning.
Anyone have any insight?
Im so happy of this whole conversion, if I solve this tiny problem, the car will be rock solid.
*on the plus side, I layed in to boost a little bit, HOLY FUCK, I have NEVER in my life experienced acceleration like this, Even though its on bone stock boost, it feels like the most incredible thing ever, and I get attention like Ive never gotten attention before, its awesome! :lol:
A couple issues that ive run in to...
The cars been flawless, firehawk (Chuck) and his partner Brent did an excellent job with the entire conversion, they worked with me and understood that Iwas on a budget, since I was on a budget, they installed and troubleshooted many parts on the car for me, and didnt half ass not one single thing.
The car though has a little problem that absolutely no one can solve.
On first start up whenever I crank up the car it runs perfect, it idles a little rough but doesn't seem to have any issues, even when you rev it up (out of gear under no engine load) it revs up what appears to be smooth and consistent and driveable sounding...
Now when you put the motor under any load, the engine bucks and stumbles and is barely drivable, Chuck Changed the Cap & Rotor, checked the crank angle sensor, changed out the plugs (NGK Coppers gapped .040 over), used that little tool (I forgot the name), checked ignition timing, and made sure all injectors are firing.
Let me mind you Im running an 86NA Chassis & Wiring harness, 87 Turbo ECU, Dual/Side Feed injectors (they have been cleaned and flowed, and 87 o2 sensor.
We adjusted TPS, blocked off AIC, and looked everything over.
Everything looks fine, but the motor runs what seems to be ULTRA rich at low rpm (800-3000'ish rpms), it is NOT an issue related to the firing of the injectors (Sequential fire v. Batch fire), it runs like CRAP, for example if im driving from a stop, and engage the clutch, it will drive of course, but is running so rich it will barely accelerate, but as the rpms go up and the closer the needle goes to boost (on my boost gauge), the less it stumbles, and finally when im at the mid 3000 rpms, it clears up PERFECTLY and runs absolutely flawless. (Under boost it runs flawless)
This is NOT an issue related to plug gap, o2 sensor, or anything.
heres the reason why...
When disconnecting or connecting the o2 sensor, it runs the exact same.
We tried an 84Turbo Automatic ECU to see if this is an ECU related issue, but the outcome came out to be the same, ran like crap.
Now every 2 hours or so, out of the blue, out of no where, not related to any specific RPM, something odd happens and it runs perfect, not ONE miss, not ONE jerk, EVERY engine RPM and EVERY engine load, throttle position, doesnt matter one bit, it runs absolutely like it should be running for a little over 30 seconds, and then after those 30 seconds it starts jerking and running like crap again.
Tonight I popped off the pins to the AFM (Air flow meter), and pulled it out (with the engine running), the engine was idling at the time, and as SOON as I pulled it out, the rpms went up about 200, and it idled seemlessly perfect!
I revved the motor up a bit (of course it wont rev over 1500'ish rpms since the AFM is disconnected) and it revved up perfectly smooth, and it wasnt missing at idle or jerking plus the RPM's were consistent and rock solid.
I dont know what else to do...
Ive ran out of ideas...
No I havent tried a Diffrent AFM, but will tomorrow morning.
Anyone have any insight?

Im so happy of this whole conversion, if I solve this tiny problem, the car will be rock solid.
*on the plus side, I layed in to boost a little bit, HOLY FUCK, I have NEVER in my life experienced acceleration like this, Even though its on bone stock boost, it feels like the most incredible thing ever, and I get attention like Ive never gotten attention before, its awesome! :lol:
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