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View Full Version : HELP WITH THE CB7!!!


masonhenson
10-18-2009, 10:42 AM
Ok guys few questions.
1992 cb7 accord coupe.
h22a swap manual tranny no ac no ps

1. no vtec and the speedo is inoperative
2. the heat doesnt work. welll.. if you turn the fan off and the heat all the way to red and wait like 5 minutes, then turn the fan on low the heat works amazing for like 3 secs then gets cold again.. whats the deal?? i thought it was low on coolant and it was like a third of a gallon low.. before i put that third of a gallon in the heat was completely inoperative

any help will be repped to the fullest!!!
hondaxpurt
10-18-2009, 10:51 AM
any overheating?
CaTcH22
10-18-2009, 11:49 AM
Vtec...wiring,ecu??
Speedo...speed sensor, wiring??
Heater... heater control valve, cable???
Check those first.
masonhenson
10-18-2009, 12:48 PM
No over heating.
Cable for valve it fully functioning. Heater control valve doesn't seem to be bad.. Way to test it?
Can a speed sensor cause speedo and vtec problems since the doesn't think it's moving?
Big_Joe
10-18-2009, 12:53 PM
I had the speedo and vtec problem in my cb7.
Most likely it's the speed sensor. Vtec doesn't function if the speed sensor is messed up.
hondaxpurt
10-18-2009, 05:07 PM
I had the speedo and vtec problem in my cb7.
Most likely it's the speed sensor. Vtec doesn't function if the speed sensor is messed up.

x2. as for the overheating problem...heater core? check to see how hot your heater hoses going the the firewall get and make sure there is circulation to the heater core.
masonhenson
10-18-2009, 05:14 PM
The speed sensor was unplugged.. Plugged it back in and it bounced around/ worked ok for about half a mile and now just bounces around 10 when coasting and falls to 0 on accelleration
sam.car
10-18-2009, 09:39 PM
I don't know if you are aware of this website or not, but have you ever been to www.cb7tuner.com ?

If your questions or problems cannot be answered or fixed on IA, try heading over there. Just about every single thing that has to do with any CB7 has been addressed.
Gorilla zoe
10-18-2009, 10:28 PM
If you need a new speedo, I got 3 accord ones. Cheap as hell.
masonhenson
10-18-2009, 10:37 PM
what do i buy a vss for? its a 92 accord with a jdm h22a and m2b4 tranny
masonhenson
10-18-2009, 10:38 PM
and i asked on cb7 tuner as well
K24cb7coupe
10-18-2009, 10:44 PM
buy it for the tranny you have, the plugs are the same. check the thermostat, need to check to see if vtec is properly wired. check the exhaust when coolant is full and car is warmed to see if it smells like coolant. that means a blown head gasket.
whatever210
10-18-2009, 11:04 PM
Ok guys few questions.
1992 cb7 accord coupe.
h22a swap manual tranny no ac no ps

1. no vtec and the speedo is inoperative
2. the heat doesnt work. welll.. if you turn the fan off and the heat all the way to red and wait like 5 minutes, then turn the fan on low the heat works amazing for like 3 secs then gets cold again.. whats the deal?? i thought it was low on coolant and it was like a third of a gallon low.. before i put that third of a gallon in the heat was completely inoperative

any help will be repped to the fullest!!!

like said already. you must be over 20mph inorder for vtec to work. so you need a new speed sensor. one from a stock accord will work. like cb7 years. are you sure the heater lines are actually hooked up and not looped or anything.

neg reps please. thanks
masonhenson
10-19-2009, 08:04 AM
ok so one person says the vss for the tranny, another says for the car. which is it? this morning the speedo worked for about 2 miles and i THINK vtec popped in first. the tranny is a jdm m2b4.. so where do i get a vss for that.
whatever210
10-19-2009, 10:29 AM
ok so one person says the vss for the tranny, another says for the car. which is it? this morning the speedo worked for about 2 miles and i THINK vtec popped in first. the tranny is a jdm m2b4.. so where do i get a vss for that.
just change the vss first. those are usaly super cheap. thats what mine was doing when i first put my h22 in becauase i accidently broke it mine putting it in. i just used a accord one.
masonhenson
10-19-2009, 11:51 AM
just change the vss first. those are usaly super cheap. thats what mine was doing when i first put my h22 in becauase i accidently broke it mine putting it in. i just used a accord one.

will try... any help on how to change one? haha
whatever210
10-19-2009, 10:26 PM
its on back of tranny and i believe its one bolt that holds it down with one connector