I have a 1991 honda crx si 1.6 and the underhood sticker is missing. I need to know the timing and idle speed. Please. Thank you very much.

The Si was about 108hp and 100tq

the firing order for your 91 crx should be 1, 3, 4 and 2. You need to identify where the rotor points to when cylinder 1 is at top dead center.
Cylinder number 1 is the one closest to the accessory belts (alternator, power steering , etc, hope this helps.

All Honda 4 cylinder engines that I have worked on have a firing order of 1342. That is the firing order on your CRX. #1 is the cylinder closest to the timing belt.

idle control or thottle position sensor

you'll need to take the gauge cluster out and disassemble it. then take off the pointers making sure to note where they're pointing to. then apply the new face. and wire power and ground. put the pointers back on and reassemble.

go get the battery and the alternater tested. its free at like auto zone and it covers your bases before spending lots of $.

you would have to check the axle is the same

check the cam and crank sensors..they go bad they wont let the car start

Have you replaced the fuel filter? if not, it could very well be the problem

what kind of engine did you put in it?