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Wow!! That was great!! Thank you for taking the time to give me all that info. :worthy: :worthy: :worthy: I really do appreciate all that info, alot of stuff that I would never have thought of. I will try that stuff and get back to you. Thanks again, Devin

O2 sensor has not been changed this year, so that is a possibility. It has done this sense the end of the last season. I changed the o2 sensor at the end of the season. Does the o2 sensor make a difference at WOT? Thanks Devin

Brand new dizzy put in 2 months ago, changed out the fuel pressure regulater, new fuel pump a year ago along with filter. rebuild on the engine less than a year ago. new plugs, tried different wires. No check engine lights on. Things I have not done. Change the Throttle postion sensor or...

Happy October to all, I have a pretty much stock 1.5 in a 1991 civic, equiped with a header. I runn this in ITC thru the SCCA. I posted before on a stumbling problem I have with the car. I put the car on a mustang dyno at Wheel to Wheel in Michigan. Car starts up and idles real rich-9's and...

I mixed that up, sorry. it is a 1991 btw. I will be switching the o2 sens at the next race next weekend.

I have a plain ol civic 3dr standard 1.5 4 speed car

Stock set up, I have not changed the ECU, or minipulated it in any way. I run in the ITC group and it allows very little mods. I have a header on it and the exhaust has a cherry bomb, That is about the extent of it. I will invest in Hondata soon but as per GCR ( general compitition rules) I...

Nice write up :D Pardon my ignorance, how does the voltage vary from reassemblying the TPS? Here is my issue. My car runs real rich, ( I had it on a dyno this morning) We think the TPS might be the problem. Any way to tell before I tear it all up?

I can switch it otu, great. However I still need to buy a new TPS, but they only come in the throttle body!

I have a 1991 3dr 1.5 4speed trans. I race the car in ITC class (SCCA) brand new just under 500 dollars! I thought if I was going to spend that kinda money i would buy a whole car, however I wouldnt know If that was good or bad. Thanks again. Devin ITC civic

Hello, I may have a bad throttle positioning sensor <_< Problem is the TPS is not a piece by itself, therefore I have to buy a new throttle body, This will cost about $500 :blink: through Majestic Honda. First how can I tell if it is bad or not? Second any alternatives? Thanks in advance...

I live in Bay City. I talked to Andy already and he seems to be a little busy until next week. I've got an appointment set up for thur morning at Wheel to wheel. It sounds like they have the right equip and some people handy to help diagnose. I sure hope the dyno helps, other wise i'm SOL. I...

Not sure what I will be diagnosing, I have had this ongoing problem with my car all year. I have changed everything except the drivers seat. Problem is this. In 3rd and 4th gear around 3500 to 5300 rpms the car sounds and feels as if i have lost a cylinder, (this occures at WOT) I have to blip...

Hey all, I need to find a dyno in Michigan preferably. This place must be able to diagnose a 1991 honda civic. Thanks in advance!! Devin