Hey y’all new to this turbo ranger stuff. Just got a 1994 ranger 2.3l turbo it’s has Heat treated crank forged rod, arp main studs head studs, brand new head cam has .233 lift and durationStock harness, lil pimp ecu self learning and i believe they are 64lb injectors. Just picked this thing up. It seems Like it has A conversion to run on 1 coil pack but originally motor had 8 spark plugs. Anyways it’s having trouble revving above 3k rpm. It falls on its Face but my afr reads rich. Idk might be overthinking it. New spark plugs, new fuel. Anything helps

 

Welcome to the forum

All engine computers have a REV Limiter set at 3,000rpm
REV limiter is in place if speed is 0MPH or Neutral switch is engaged

On a manual Neutral is if clutch pedal switch is engaged
On an automatic its if Park or Neutral is engaged on the transmission switch

Obviously if speedometer is not working..................0MPH

1994 2.3l turbo is of course not a factory model, so someone built it, so wiring will be custom

If its not one of these then exhaust is most likely partially block, limiting RPMs
Can also be intake air filter, or ??
But usually that's the first thing people check

 

[QUOTE=RonD;2223489]Welcome to the forum

All engine computers have a REV Limiter set at 3,000rpm
REV limiter is in place if speed is 0MPH or Neutral switch is engaged

On a manual Neutral is if clutch pedal switch is engaged
On an automatic its if Park or Neutral is engaged on the transmission switch

Obviously if speedometer is not working..................0MPH

1994 2.3l turbo is of course not a factory model, so someone built it, so wiring will be custom

If its not one of these then exhaust is most likely partially block, limiting RPMs
Can also be intake air filter, or ??
But usually that's the first thing people check


ill have to look into the rev limiter thing. Speedo works and clutch safety is jumped. It’s a 5speed

 

"clutch safety switch is jumped"
How was that done?
Just connected together the red/blue wires or is the switch unplugged?

Is the limited RPMs new and did it REV higher after you got it and now it doesn't?

Do you know the year of the turbo computer?

 

[QUOTE=RonD;2223504]"clutch safety switch is jumped"
How was that done?
Just connected together the red/blue wires or is the switch unplugged?

Is the limited RPMs new and did it REV higher after you got it and now it doesn't?

Do you know the year of the turbo computer?

I don’t know the year of the computer, the plug is unplugged and the red/blue wire is jump with the pink. This problem was happening before I got it as Well. Not a new issue. Someone else’s project turned into mine.

 

Can you see the computer?

All Ford computers, even in 2023, have -12A650- as the center number of the part number
The first 2 digits are the Year, first digit is a letter
D = 197
E = 198
F = 199
So E5 is 1985

The label with the number is under the 60-wire connector so its protected when connector is in place

Seen here in this ebay ad for a 1985 T-bird turbo coupe computer: https://www.ebay.ca/itm/225686153845...BoCRgIQAvD_BwE

E5ZF-12A650-C1B

The C1B can tell you if it was a manual or automatic trans vehicle, which matters for the Neutral switch
But Ford never publish what the last numbers referenced, we just know its a software code and was different for manuals and automatics, lol

Wiring diagram for 1988 T-bird 2.3l turbo computer seen here: https://www.therangerstation.com/tec...urbowiring.pdf

Pin 30 is the neutral sensor input

 

the ecm in this truck is from stinger performance, it’s a lil pimp ecm

 

OK so not really Ford related so probably can't help

Join this Forum: https://stinger-performance.proboards.com/

They have a 2.3l Turbo Tech sub-forum

They WILL have answers for you