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hope801 · 03-25-2008, 12:23 AM

Hey guys i bought my first Honda!
Its a 91 Crx HF.
but a few questions:
1. I have no idea what engine is in it?

2. When i fresh start in the morning its at 1500rpm, then when operating normal temperature it drops all the way down to about 400rpm is that normal? Or is there any way of fixing this?
heard something about Fast Idle Control Valve, anything wud help

3. No a/c. Radiator looks fine but i noticed the fan doesnt come on. Help?

4. I now pronounce you, Man & Honda. You may now kiss your paychecks good bye!

|Chaz| · 03-25-2008, 01:01 AM

Quote:

Originally Posted by hope801

Hey guys i bought my first Honda!
Its a 91 Crx HF.
but a few questions:
1. I have no idea what engine is in it?

2. When i fresh start in the morning its at 1500rpm, then when operating normal temperature it drops all the way down to about 400rpm is that normal? Or is there any way of fixing this?
heard something about Fast Idle Control Valve, anything wud help

3. No a/c. Radiator looks fine but i noticed the fan doesnt come on. Help?

4. I now pronounce you, Man & Honda. You may now kiss your paychecks good bye!

#1 there should be an engine code stamped on the front lower portion of the engine.

#2 not sure, I don't have a tach, but I know my Honda always idles fast at startup until it warms up.

#3 don't know

#4 Honda's aren't expensive to maintain. You can make them expensive once you start dropping different motors, turboing, all that good stuff.

Citizen_Insane · 03-25-2008, 01:56 AM

That looks like a stock HF motor. Floor it, if it feels like 62hp, then it's definitely an HF motor (D15b6).

Yes, that idle is a little off. Check all your vacuum lines and make sure they're all connected and that they're not leaking (put some water mixed w/ dish soap on them and look for bubbles). Also check to see if you have enough coolant.

My rad fan never came on in my CRX either. If it's not overheating, don't worry about it.

Unless you mod the car, it should be cheap to maintain. Being an HF, it'll get great gas mileage. I got about 50mpg average in my '90 HF.

Finally, Welcome to the world of honda, the CRX is one of the best cars ever made. Enjoy her and treat her well.

ls/vtechatch91 · 03-25-2008, 03:42 AM

i would adjust ur idling screw on ur throttle body when its warmed up..

dacheat · 03-25-2008, 09:34 AM

yeah a good resting idle should be around 800rpm for a rex. now show us the rest of the car!!

whiterabbit06 · 03-25-2008, 11:16 AM

One more piece of advice, buy a Haynes/Chilton's/Similar repair manual. It will be well worth your money.

dacheat · 03-25-2008, 02:21 PM

get_nick · 03-25-2008, 02:38 PM

Quote:

Originally Posted by whiterabbit06

One more piece of advice, buy a Haynes/Chilton's/Similar repair manual. It will be well worth your money.

how about a helm's?

|Chaz| · 03-25-2008, 02:42 PM

Quote:

Originally Posted by get_nick

how about a helm's?

I've yet to get a paperback manual, but I do have a digital copy of one. I was thinking of printing it out, but it's like almost 2000 pages long

.

get_nick · 03-25-2008, 02:44 PM

Quote:

Originally Posted by |Chaz|

I've yet to get a paperback manual, but I do have a digital copy of one. I was thinking of printing it out, but it's like almost 2000 pages long

.

it's a good book. it's what they use at the dealership. i think they run about $50 if you order it online. might be able to try ebay or something.

|Chaz| · 03-25-2008, 02:55 PM

Quote:

Originally Posted by get_nick

it's a good book. it's what they use at the dealership. i think they run about $50 if you order it online. might be able to try ebay or something.

I'll have to order one then before I do my swap.

Koop · 03-26-2008, 12:27 AM

D15B6

Found in:
- 1988-1991 Honda CRX HFx
  - Displacement : 1493 cm³
  - Bore and Stroke : 75 mm X 84.5 mm
  - Compression : 9.1:1
  - Power : 62 hp(88-89) 72 hp(90-91)@ 4500 & 83 ft·lbf @ 2800 rpm
  - Valvetrain : SOHC (2 valves per cylinder)
  - Fuel Control : OBD-0 MPFI

hope801 · 03-27-2008, 12:19 AM

thanks guys.

LS_VTEC · 03-27-2008, 12:27 AM

You can buy a Chiltons/Helm's manual for cheap, but you can also get AllData for $945945044329 a month!

GO ALLDATA! ;x

hatukazi · 03-27-2008, 07:14 PM

Quote:

Originally Posted by LS_VTEC

You can buy a Chiltons/Helm's manual for cheap, but you can also get AllData for $945945044329 a month!

GO ALLDATA! ;x

we use alldata at school and it sucks sweaty donkey balls.

give me a paper helms or the downloads I use now any day over alldata.

|Chaz| · 03-27-2008, 09:46 PM

What's AllData?

maykelcj · 03-28-2008, 11:17 PM

hey.. I have an hf also and it always idles at 400 rpm. I know a honda mechanic and he told me that the HF always idles like that.

92civicb18b1 · 03-28-2008, 11:22 PM

I would set the idle between 6-800

hope801 · 03-29-2008, 02:59 PM

mine doesnt even come up when i idle at normal operating temps. but it sounds like the engine is operating normal. idk. when i step on the gas it comes up also. im confused. any tips?

03-25-2008, 09:34 AM	#5
dacheat ..is grounded. Join Date: Jul 2007 Location: strongbadia Posts: 2,909 iTrader: 4 / 100% Ride: '84 buick (rusted) Rep Power: 143	yeah a good resting idle should be around 800rpm for a rex. now show us the rest of the car!! __________________ marco....

03-25-2008, 11:16 AM	#6
whiterabbit06 universal logic protocol Join Date: Oct 2007 Location: Florida Age: 22 Posts: 572 iTrader: 0 / 0% Ride: 99 VW GTI 90 Civic Hatch 07 Jeep Compass Rep Power: 61	One more piece of advice, buy a Haynes/Chilton's/Similar repair manual. It will be well worth your money. __________________ 90 Civic Hatch 99 VW GTI <= BIG F'IN POS 07 Jeep Compass If you ever find anything I write usefull please leave rep. Rebuilding a Transmission http://www.the-whiterabbit.com

03-25-2008, 02:21 PM	#7
dacheat ..is grounded. Join Date: Jul 2007 Location: strongbadia Posts: 2,909 iTrader: 4 / 100% Ride: '84 buick (rusted) Rep Power: 143	x2. __________________ marco....

03-26-2008, 12:27 AM	#12
Koop •°o.O KOOP™ Join Date: Feb 2008 Location: cowtown Age: 25 Posts: 156 iTrader: 0 / 0% Ride: 98' D-Series SI (CAN) Rep Power: 0	D15B6 Found in: 1988-1991 Honda CRX HFx Displacement : 1493 cm³ Bore and Stroke : 75 mm X 84.5 mm Compression : 9.1:1 Power : 62 hp(88-89) 72 hp(90-91)@ 4500 & 83 ft·lbf @ 2800 rpm Valvetrain : SOHC (2 valves per cylinder) Fuel Control : OBD-0 MPFI __________________ The Dawn's eyes were too sad look into. Any man who dared even glance, gave his lifetime of sin to her. Travels knew she was revered as a god and took pity on her innocent soul burdened by all strangers anguish. She was a prisoner of the Rahgokas and no one dared free her from the cage their magic had wrought.

03-27-2008, 12:27 AM	#14
LS_VTEC you get the BRAKE Join Date: Dec 2007 Location: NJ Posts: 2,596 iTrader: 0 / 0% Ride: 99 YZF-R6 Rep Power: 40	You can buy a Chiltons/Helm's manual for cheap, but you can also get AllData for $945945044329 a month! GO ALLDATA! ;x __________________ eg hatch (jdm b16) sold 1999 Yamaha YZF R6 (modded) http://hondaswap.com/engine-building...ow-pics-102486 sold


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03-25-2008, 12:23 AM	#1
hope801 Handy Manny ;) Join Date: Mar 2008 Location: Salt Lake Age: 19 Posts: 306 iTrader: 0 / 0% Ride: 91 Crx HF_ 83 Rx7 Gsl_02 Accord EX Rep Power: 42	First Honda Hey guys i bought my first Honda! Its a 91 Crx HF. but a few questions: 1. I have no idea what engine is in it? 2. When i fresh start in the morning its at 1500rpm, then when operating normal temperature it drops all the way down to about 400rpm is that normal? Or is there any way of fixing this? heard something about Fast Idle Control Valve, anything wud help 3. No a/c. Radiator looks fine but i noticed the fan doesnt come on. Help? 4. I now pronounce you, Man & Honda. You may now kiss your paychecks good bye! Last edited by hope801; 03-25-2008 at 12:26 AM.

03-25-2008, 01:56 AM	#3
Citizen_Insane Senior Member Join Date: Jul 2003 Location: Minneapolis Posts: 3,698 iTrader: 0 / 0% Rep Power: 48	That looks like a stock HF motor. Floor it, if it feels like 62hp, then it's definitely an HF motor (D15b6). Yes, that idle is a little off. Check all your vacuum lines and make sure they're all connected and that they're not leaking (put some water mixed w/ dish soap on them and look for bubbles). Also check to see if you have enough coolant. My rad fan never came on in my CRX either. If it's not overheating, don't worry about it. Unless you mod the car, it should be cheap to maintain. Being an HF, it'll get great gas mileage. I got about 50mpg average in my '90 HF. Finally, Welcome to the world of honda, the CRX is one of the best cars ever made. Enjoy her and treat her well. __________________ No tech questions through PM please! B16 CRX....you will be missed

03-25-2008, 03:42 AM	#4
ls/vtechatch91 Senior Member Join Date: Sep 2006 Location: washington Age: 21 Posts: 312 iTrader: 0 / 0% Ride: 91 integra with ls/vtec... Rep Power: 8	i would adjust ur idling screw on ur throttle body when its warmed up..

03-27-2008, 09:46 PM	#16
\|Chaz\| Senior Member Join Date: Jul 2007 Location: Washington Age: 18 Posts: 2,308 iTrader: 0 / 0% Ride: 92' EG Sedan Rep Power: 70	What's AllData? __________________ XBL Gamertag = i1Chad1i & i (space here)Chaz(space here)i

03-28-2008, 11:17 PM	#17
maykelcj Member Join Date: Sep 2007 Posts: 53 iTrader: 0 / 0% Rep Power: 3	hey.. I have an hf also and it always idles at 400 rpm. I know a honda mechanic and he told me that the HF always idles like that.

03-28-2008, 11:22 PM	#18
92civicb18b1 The Trisexual Join Date: Oct 2003 Location: The asshole of the USA, New Jersey Age: 21 Posts: 8,859 iTrader: 0 / 0% Ride: 2007 Civic, 1995 Jeep Grand Cherokee Rep Power: 121	I would set the idle between 6-800 __________________ DO NOT PM ME WITH TECH QUESTIONS!!! Current Rides 1995 Jeep Grand Cherokee =I love this truck 2007 Civic =Not sure what the future holds for this Previous 1992 Civic DX Hatch = 1994 B18B1 Turbo Rebuilt Garrett .60/.48 T3, log style mani and DIY downpipe, DSM 440's, kteller IC piping, JRC Intercooler, Home Depot style oil lines, HKS BOV, Crome Tuned, 253whp 1994 Civic VX Hatch, 1992 b18a1 swap 1993 Civic CX Hatch, 2000 B18b1

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