the motor runs but the idle goes up and down twice then idles at around 3500. the ECU is blinking 10 times meaning the intake air temp sensor according to my haynes manual. what is wrong ???!!!!

should i replace the IAT ??? i'm sure i don't have any leaks i don't smell gas or anything ???

 

also at the back of the manifold there seems to be another sensor right beside the EACV...its not hooked up to anything cuz i couldn't find the plug for it...could this be the problem???

 

if it bounces that much.. are u sure u got the MAP sensor hooked up right?
yes all the plugs should be used... i have a Z6 Intake man,.... and i had a spot for eveyr one of them,.....

 

yeah i got the MAP sensor hooked up to the fitting on top of the throttle body. i don't think its that though cuz its throwing code 10 for the IAT. as for the plugs they are all in the right spots its just that one sensor i think it is beside the EACV at the back.. i really need help guys i am running out of time i only got an hour left for this thing to be done

 

actually according thumpu77 and then I later found out myself with the DX harness there is one sensor left over after you are dont with everything....now what kinda intake manfiold you used im not sure and I used a 90 SI intake manifold and I dont have a sensor......but I do have an open on the harness still and Im only throwing codes for a 02 sensor...cause mine is bad and I knew that.....it was before.....

Idle is going to be tricky might want to mess around with teh throttle calbe a bit...and you might even want to adjust the idle adjusting screw on the intake manifold by the t/b.

Ill try and help you as much as I can....I did this swap as well as a a6 head and im still having issues here and there but overalll Im very pleased.....my point is no body F-ing helped me well barely...so im going to help you so you dnot get pushed around and feel left out in the dark like I did.....

maybe we can learn somthing together.....

 

i'm using a 90 crx Si intake manifold same as yours. sorry you didn't get the help you needed bro but at least your car is running now. by the way how do i get the dx throttle cable out?? thats weird you don't have another sensor beside the EACV at the back ??? i don't got the throttle cable hooked up right now but i don't think thats it. i just hope its the IAT cuz i can replace that easily but i can't seem to get it off the mani.....i need everyone's help on this...

 

the other sensor is fast idle control.it does not do ant thing trust me,theres not code for it either.probly the iac.the air intake temp sensor wont make it run shitty.

 

then how come the ECU is showing code 10 for intake air temp??? whats the IAC??
do you mean EACV???

 

is it possible that i have a leak somewhere around between the head and the intake manifold?? gasket?? i'm using the gasket that came with the Si manifold....

 

ill tell you a quik way to find out! while running spray carb cleaner around the intake gasket where it blots to the head.allways use a new intake gasket,or any gasket.

 

if the only code is a 10 or air temp sensor,ill bet you its an intake leak,or vacum.

 

vacuum i'm sure its not but the manifold gasket is most likely. i got all the hoses hooked up right but i'm gonna get a gasket...hope thats the problem so it will be fixed. do you really have to torque the bolts cuz i don't how you can fit a torque wrench there and is there a sequence to tighten the nuts?? i went from inside to outside...

 

no,turn a 1/4 turn after pretty snug.try the carb cleaner,but im sure its the gasket.

 

i have the same prob but only after i threw on an si trans. no codes, no vacume leaks, evac (iac) are new. im thinking coolant temp sensor or guage cluster (speed sensor).

the fast idle sensor on the back of the si manifolds are uselessthey dont need to be hooke dup to anything

 

oh man i'm starting to regret doing this now i'm thinking i'll just rewire everything back to dpfi cuz i can't figure out whats wrong. i haven't put the new manifold gasket on yet but i sprayed carb cleaner around the mating area except underneath . i sprayed the eacv with carb cleaner but all it did was make it idle around 2500 and bounce up and down between 2000 and 2500 rpms...guys what can be wrong this is so upsetting and depressing i can't get the IAT off the manifold but i guess i'll try one more time and install the new manifold gasket see what happens

 

LOL mine isnt hooked up and it runs good.......

 

your iat isn't hooked up!!! thats weird cross your fingers and wish me luck thats its gasket thats causing me the headaches

 

it was not for a day,i did not notice any difference.but its hooked back up.i put on a y8 intake manifold.

well do it solve it? did you clean the head and intake maniflod surface really good?

 

if you spray carb cleaner and the idle jumps around its a vacume leak either in the manifold or a line or the evac etc.

 

k man i'm giving up i should've listened to my dad my d15b2 was running excellent and i just had to **** it up now whenever i start it it makes a loud rattling sound and i don't know where its coming from!!! i'm gonna switch it back to dpfi thanks anyways for the help guys

 

dont do back to dpfi, its slow. just work out the bugs

 

don't listen to your dad! my dad said the same thing when i had a few problems, but i kept at it and the car runs better than before (he was amazed at the power increase)!

did you switch the 2 outside wires on the TPS during the swap? that could be your problem. also, double check all of your vacuum lines (also, check all your gaskets. did you use gasket sealer on them all? mainly the gasket for the manifold itself)?. as for the fast idle solenoid, you should have a plug with two wires, black/orange and blue/yellow i believe. you should solder the wires from the harness onto the fast idle solenoid, they go to the correct ECU positions for the solenoid.

 

k guys i am in deep trouble from my dad. i think i screwed up the motor and i can't fix it. i got it back to dpfi and it started but started making a loud knocking or tapping noise...can anyone tell me what this is and how i can fix it i need to get the car back on the road by tomorrow!!! man i feel like **** right now...i should've listened to my dad.....

 

guys i'm really stumped here....i don't what is making that loud horrible tapping sound... i pulled off the valve cover just to check and its fine...pulled the spark plugs and they are black by the way...i stuck a magnet in the combustion chamber to see if theres like debris in there that could cause the knocking and nothing...i don't know what else to check...i am so depressed...its like i killed my car or something that feeling....

 

i have the same open sensor on my 91 man. i did not hook it up and i do not get any codes from it (you dont need it) i just have injector code. still cant figure it out. it is pissing me off


[Modified by 88civic, 3:34 PM 9/10/2002]