Put a b18a into a '91 crx rev problems

[newbie2imports]

Okay, for starters I put a '91 integra ls b18 into a '91 crx HF that had a D155 (something like that). Tried b18 engine harness and running wires and making a mess and digging into wiring diagrams to make it run, and got no where. So just for giggles, I put the old D155 harness on with its computer and the B18 runs and idles fine, until you go to drive it and @ 3100-3200 rpm it stutters like a rev limiter or stutter box would.
Anybody have any suggestions?

 

[racintweek]

sounds like a bad coil/ignitor, not the wiring.

 

[jlicrx]

probably the HF ECU - get the PR4 OBD0 ECU

 

[formby]

i have a virgin one $25+shp

 

[newbie2imports]

What model would the PR4 OBDO come out of? I have the Interga LS computer. If I plug it in it really runs like crap.

 

[newbie2imports]

ttt

 

[MugenCRX]

Yes, you need the Integra's ECU. I would verify that the ECU actually came out of a 91 Integra, and not a 92-93. Because that would make it an OBD-1 ECU, and you need an OBD-0.

 

[pauls81sc]

Quoted post[/post]]
Yes, you need the Integra's ECU. I would verify that the ECU actually came out of a 91 Integra, and not a 92-93. Because that would make it an OBD-1 ECU, and you need an OBD-0.

Here's a good list I'd found on ECU part numbers and how they correlate to models and years.

http://www.xenocron.com/downloads/ECU-codes.xls

 

[newbie2imports]

Yeah, I'm positive I have the computer from a '91 Integra. I also have the full engine harness, but I don't have enough wires on the crx chassis harness to splice it in. I have the hf harness on the b18 now. The hf computer has the rev problem and the integra computer plugged in to the hf harness makes a bad miss fire at any rpm.