87 crx si w/ dohc zc problem !

We may earn a small commission from affiliate links and paid advertisements. Terms

dilbeckskate

dilbeckskate

infamous
title says all, it idles fine, but wont rev past 1500 rpm ? any ideas ?
 
395215_10151202769370076_905230075_22568497_33406288_n.jpg
 
the engine in the picture is from 88-91 car which used electronic advance ignition system - your 87 Si used a vacuum advance ignition system

did you modify the wiring so that you could run the electronic advance?

what ECU do you have? - you would need an ECU that is compatible with the electronic advance, like 88-89 Integra PG7 - you can't use the 86-87 Integra PG7 as it was also for vacuum advance ignition
 
Last edited:
car was swapped when I bought it , $900 owner didnt know it was swapped, drove it all day and when you cranked it it would only rev to 1500 rpm , replaced the iacv, ecu, and dizzy now it only rev's to 3k... any ideas ?
 
jlicrx said:
the engine in the picture is from 88-91 car which used electronic advance ignition system - your 87 Si used a vacuum advance ignition system

did you modify the wiring so that you could run the electronic advance?

what ECU do you have? - you would need an ECU that is compatible with the electronic advance, like 88-89 Integra PG7 - you can't use the 86-87 Integra PG7 as it was also for vacuum advance ignition
Click to expand...

car was swapped when I bought it , $900 owner didnt know it was swapped, drove it all day and when you cranked it it would only rev to 1500 rpm , replaced the iacv, ecu, and dizzy now it only rev's to 3k... any ideas ? its literally like a rev limiter
423849_371689709523576_100000476515855_1545265_645518602_n.jpg
 
pm7, it only throws the IACV code and Ive replaced it 2ce with known good ones, changed the dizzy, ecu, re-wired the iacv, still same shit 3k
 
not revving beyond 3k is usually a problem with the crank sensor in the distributor - either a bad distributor or something wrong with the wiring for the crank sensor - crank sensor code is 4 - are you sure you are counting the flashes correctly for the codes? does the ECU flash 14 times for the EACV? OBD0 D-series ECUs, like the PM7, only have short flashes, not long and short like the OBD0 B-series ECUs - if you are seeing one flash, pause, and then 4 flashes, you have codes 1 for O2 sensor and 4 for crank sensor, not 14 for EACV

code14.jpg
 
Last edited:
i fixed it, the +12v wire for the iacv had a short in it, progress cleaning up the engine bay today
422792_373374842688396_100000476515855_1550751_160077972_n.jpg


intake I threw together with stuff laying around
401976_10151217953160076_905230075_22617874_67117565_n.jpg
 
You must log in or register to reply here.
Back
Top