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2000 Prelude is falling on its face!!!

 
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Old 09-21-2011, 11:22 PM
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2000 Prelude is falling on its face!!!

Hey guys new to the site but not to the prelude world. Anyway i just picked up a 2000 prelude base 5 speed 213k mobil one its whole life. Car has been sitting for a while when i bought it. Got it home replaced the battery and it started right up. Gas was low drove to the store and put it $20 87 octane. Running fine then all of a sudden about 10 minutes into driving it threw a CEL. Falling on its face couldnt accelerate, jerky acceleration loss of power in every gear couldnt not rev past 3k. Starts fine but back firing ect no power when driving. Got the old autozone code reader and pulled up three codes P0336, P1361,P0325. From the looks of things the egr valve has been replaced and ports were cleaned and replaced with the aluminum plugs. Everything is up to date on this car newer distribitor, plugs, ect. Car starts fine and yet idles a tad low. So even when the car is warm it still starts and will idle all day. If i push the gas it will rev in neutral to 8k with no hesitation, even with the CEL light on. I know one code is the cranl shaft position sensor but really?? out of all the hondas ive owned ive never had to replace that ever. So im not gonna pay some goon $85 bucks an hour to figure this out. Do you guys think 87 octane could cause all this?? the ecu should just back timing down and lose some power, but not all these problems. Also if i push the gas while in neutral and let off immeditely it drops way below 1k for idle and now is dying out. But it starts up again with a turn of the key. So im just looking for some ideas and help. Thanks!!!
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Old 09-22-2011, 12:44 AM
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Re: 2000 Prelude is falling on its face!!!

try putting in the highest octane gas you can find - your not supposed to run 87 octane unless its an emergency with no other fuel option around

also try cleaning the IACV - fixed a lot of my idle issues. mine used to drop quite a bit when i used to let off the gas quickly also, IACV + EGR cleaning fixed that right up.

Cleaning IAC
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Old 09-22-2011, 01:28 PM
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Re: 2000 Prelude is falling on its face!!!

I was getting a cylinder misfire and a lot of the similar symptoms you have right now a few weeks ago. I cleaned my IAC and EGR and I havent had a problem since! There's lots of tutorials around on how to do it
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Old 09-22-2011, 02:05 PM
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Re: 2000 Prelude is falling on its face!!!

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Originally Posted by zpirbhai View Post
try putting in the highest octane gas you can find - your not supposed to run 87 octane unless its an emergency with no other fuel option around

also try cleaning the IACV - fixed a lot of my idle issues. mine used to drop quite a bit when i used to let off the gas quickly also, IACV + EGR cleaning fixed that right up.

Cleaning IAC
X2. Don't ever put low octane in this car. It is made for high octane (premium fuel) as it tells you right on the speedometer. Fill it up with the highest octane you can find asap!
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Old 09-22-2011, 02:18 PM
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Re: 2000 Prelude is falling on its face!!!

Ok guys thanks so much for your advice. I will fill up with 93 octane and but some octane booster asap. I will also clean the egr valve. Ill keep you guys posted the results!!!
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Old 09-22-2011, 02:20 PM
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Re: 2000 Prelude is falling on its face!!!

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Originally Posted by Mainecobra View Post
I know one code is the cranl shaft position sensor but really?? out of all the hondas ive owned ive never had to replace that ever. So im not gonna pay some goon $85 bucks an hour to figure this out.
an ecu not knowing the position of the crankshaft can cause a car to not run right. you could check to make sure the crankshaft sensor is plugged in first before you pay someone to replace it or try to replace it yourself.

also, the car probably ran fine for a while and then started throwing codes because you replaced the battery and the car had to be driven through its drivecycles before it starts thowing codes.
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Old 09-22-2011, 10:04 PM
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Re: 2000 Prelude is falling on its face!!!

Ok guys so i cleaned the IAC. Started the car and it still threw a code but ran fine. No jerky hesitations through acceleration. Although vtec wasnt engaging. Then went and put octane booster to conteract the 87 octane that was in it. Then went to autozone to check the cel now. Was p3028 i think, but it was the code for the knock sensor. Then i cleared the code and drove off still running fine. Then went and filled up with 91 octane, then boom problem even worse. Same symptoms stalling, jerky acceleration, no power ect could barley accelerate period. Parked it went into the gym for a hour, then canme out and it wouldnt start, then it did and would misfire chug and chuckle and stall out. It always started fine before now it wont stay running. So now its down to one code the knock sensor. What do you guys think?????
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Old 09-22-2011, 11:23 PM
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Re: 2000 Prelude is falling on its face!!!

im curious as to why you would put 87 in the car when it says on the gauge cluster "premium unleaded fuel only"
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Old 09-23-2011, 07:01 AM
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Re: 2000 Prelude is falling on its face!!!

because i was at a gas station who only had 87 octane. And usually the ecu will retard timing and your car should run fine just a noticible power loss. Any idead guys whats going on with my car??? It wont even start now and if it does it dies right off, like its all over the place, wont even read the throttle when i push the gas, wont go past 1k rpm just barley stays running then dies. Never did that before i clean the IAC and put 91 octane. Whats up????
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Old 09-24-2011, 11:37 PM
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Re: 2000 Prelude is falling on its face!!!

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Originally Posted by Mainecobra View Post
because i was at a gas station who only had 87 octane. And usually the ecu will retard timing and your car should run fine just a noticible power loss. Any idead guys whats going on with my car??? It wont even start now and if it does it dies right off, like its all over the place, wont even read the throttle when i push the gas, wont go past 1k rpm just barley stays running then dies. Never did that before i clean the IAC and put 91 octane. Whats up????
not sure dude - putting in the required fuel type and cleaning the IAC shouldnt cause more issues :S

hopefully someone will chime in soon
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Old 09-25-2011, 01:41 AM
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Re: 2000 Prelude is falling on its face!!!

Lower octane fuel doesn't burn as clean. Lots of unburnt fuel, which the ECU does pull timing to compensate for, but yeah, that'll pack your EGR with garbage real quick.

Secondly, Your car will not start because the crank position sensor is not working. If the motor does not know where TDC is, it's not going to give you any spark until it knows where that is. If the sensor is going intermittently, the car may start, but you will know there is a problem when the ignition system skips because it doesnt know where the crank is. Seems like yours finally bought the farm.

Clear the codes and try it again, but I have a feeling it's time to replace that sensor. Sucks. They're expensive little guys.

Last edited by psud3ity; 09-25-2011 at 01:44 AM.
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Old 09-25-2011, 10:45 AM
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Re: 2000 Prelude is falling on its face!!!

If u got a knock sensor code, it probably is a bad knock sensor. If the ecu is detecting pinging from low octane gas plus a bad knock sensor then the car will put itself into limp mode. It wont engage vtec and will run like crap. I would start with the knock sensor if thats what the code is. Good luck.
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Old 09-29-2011, 04:45 PM
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Re: 2000 Prelude is falling on its face!!!

Quote:
Originally Posted by Mainecobra View Post
because i was at a gas station who only had 87 octane. And usually the ecu will retard timing and your car should run fine just a noticible power loss. Any idead guys whats going on with my car??? It wont even start now and if it does it dies right off, like its all over the place, wont even read the throttle when i push the gas, wont go past 1k rpm just barley stays running then dies. Never did that before i clean the IAC and put 91 octane. Whats up????
the cars ecu will not retard the timing because the car isnt new enough to do so thats in newer cars with newer ecus. theres a reason why it requires a certain octane and since its a high compression motor you prob could of gotten away with the 87 if you added octane booster. even if you clean it out injectors and all its still too late the lower octane fuel already went through so the damage is done, how severe it is depends on how much fuel you used a long with how long the car was running on it for.
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