I've just finish my b18b swap into my 91 teg and when i start up the car, it starts up fine with no check engine light but my RPM goes up really high before it redline.

As soon as I start up the car, the rpm just shoots straight up to like 6k rpm and stays there. And I shut it off really quick didn't want it to stay that high for a long time.

What's the problem? Is there somethign I could check to see why it's doing this?

 

Could this be a ecu problem? I thought it was TB being open.. but I've check and the TB is closed.

 

check the tb and the tb cable.. its probably stuck.. happened to my friend

 

Oh, I triple check that but i'll go check it again through the firewall

 

if the tb cable was tight, wouldn't the butterfly would be open?

 

try loosen up the tb cable a little and turn it on see if it helps any bit.. dont leave the car on when its reving that high

 

Hmm.. I called up my friend and he brought his 90 Integra LS with a StockB18A1 motor and I've compare all the hoses location and wires and it looks to be in the right place. It was a little dark so I couldn't see that much. I will jack up the car and look at all the vaccum lines tomorrow.

I also took off the TB cable from the TB and just laid it there and started up the car and it just rev to 6k and up.
So that eliminates the TB cable.

Could the pr4 ecu from the 91 integra ls obd0 be the problem? or would you say a vaccum isn't plug right?

 

sounds like a vaccum issue

 

play around with the throttle cable when the car is on.

 

yea that diffently sounds like a vacum issue there. make sure that all your lines are pluged up or are connected to something. i think on one swap i had, we didnt connected the brake booster vacum line and i idle shot up to about 8000...so yup

 

Damn!


Modified by vr4twinturbo at 11:29 AM 2/14/2007

 

I know the brake booster line is connected.

The TB cable isn't connect so I know it's not the TB or the TB cable.

I'm focusing on the IAVC. Because when the IAVC plug is plugged.. it shoots to 6k rpm on start up. When I disconnect the IAVC, the rpm fluxuate between 1k-1.5k rpm and check engine light comes on.

I took the IAVC out and replaced it with another one and it does the same thing.
So that leave the IAVC out of the problem also.

All vaccum lines are plugged and tight. No loose vaccum line.

So if it's not the TB/TB cable/ IAVC/Vaccum lines..
I'm kinda stump on this one.

Just got the motor from hmotorsonline too.

 

DAMN! I woke up this morning and work on the car again. I Check all the vaccum lines and made shure it's all clamp down. I check all the wiring and it's connected right. I found my pcv valve broken so I replaced that also. Still no progress.

- Check sparkplug
- Clean sparkplug wires
- Check all vaccum tubes
- Check all wire connections for damage
- Check distributor cap/rotors
- Check TPS sensor
- Check MAP connections
- Check IAVC/ Switch IAVC
- Reset the Ecu

So I jacked the car up 2 feet high on all 4 wheels. I started up the car and the rpm shoots up to 6k like it always have been after the swap. So I said what the expletive let's just shift gears.. So I shifted to 1st and my mph went up and I shifted to 2nd and it mph went up higher. Keep in mind the TB cable isn't connect and I didn't press the gas at all. And the front 2 wheels spinned... THE F**K!?

This is some weird **** going on. Any clues to what the F**k is going on.
Swap was suppose to be hella easy, this is my 3rd engine swap and **** this is not going too well.

I'm getting frustrated. I've search on g2ic and team-integra.net and damn it's just weird.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by litovi3tboi503 &raquo;</TD></TR><TR><TD CLASS="quote">check the tb and the tb cable.. its probably stuck.. happened to my friend </TD></TR></TABLE>

 

you have an intake leak somewhere on the manifold. the ecu helps some but thats with the sensors. check all you lines leading to/from from the IM. you are getting air into the engine and it sounds like the throttle body is completely closed if the cable is diconnected. double check and make sure the butterfly is completely closed. which manifold are you using? g'luck

 

it's a b18b engine and i'm using the b18a manifold because I didn't wanna mess with drilling holes to put the other parts onto it. Every line is plugged up. I went over 10 series of rounds and check every damn wires, vaccum lines and it's plugged.

The TB cable isn't hooked on, which leaves the butterfly closed.
There's no problem on the butterfly.


I just took apart the FITV and clean it up and screw it back in really tight. And put it back and hook up the 2 vaccum to it. Start up the car same crap, 6k rpm.

The FPR is plugged. I checked all vaccums like about 9-10 complete rounds.

There is no explanation for this. I seriously can't come to a conclusion other than a bad ecu? Today my friend is coming to come over with his LS and we're going to use his ecu and if it's has the same problem.. I just had it. I went through every piece by piece and **** no one has this problem like mines before. I read about people having fluxucation 1k-2k rpm but not 6k rpm at startup.

All vaccum are plugged and clamped down tight. No leak of any oil or coolant. I put new coolant and oil too. Weird problem.

If it's not

the vaccum lines.. ALL VACCUM ARE PLUGGED
the dizzy
the sparkplugs/sparkplugs wires
the IAVC
the FITV
the pcv ( just replaced with new one)
the resistor
the injectors
the TB cable
the TPS
damage wire connections

there's no crack on the block or the manifold. I inspected that very throughly when the engine was out and after it was swap in.

I really dont know. My last and final thought points to the ecu which seems to be unlikely the problem.But **** at this point i'm desperate so I'll try it with another ecu from my friend's integra and see what's up.

 

Make sure your MAP sensor and TPS sensor plugs aren't reversed. This will cause problems as described, and the pigtail's look the same.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SoTexDC2 &raquo;</TD></TR><TR><TD CLASS="quote">Make sure your MAP sensor and TPS sensor plugs aren't reversed. This will cause problems as described, and the pigtail's look the same.</TD></TR></TABLE>

What he said^^! I did the same thing on my car and no light came on. If that doesn't work, get a can of throttle body cleaner and slowly spray the entire IM while the car is on. If there is a vaccum leak, the car is gonna suck in the cleaner and it's gonna kill. Whatever area of the IM you are spraying when it kills is where you need to start looking for leaks. I do know that the factory Honda TB gaskets are doo doo, so if you replaced yours that might be it too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SoTexDC2 &raquo;</TD></TR><TR><TD CLASS="quote">Make sure your MAP sensor and TPS sensor plugs aren't reversed. This will cause problems as described, and the pigtail's look the same.</TD></TR></TABLE>

what he said or maybe your throttle position sensor is out..

 

Did u ever find out the problem? Im having the same issue right now