3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
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Old 08-22-02, 01:05 PM
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im 5 minutes from the strip off of birdneck
Old 08-22-02, 01:20 PM
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Hey everyone I forgot to mention that the tachometer acts very erratic. We don't believe it's bad. Acts like it's related to the stumbling problems!
Thanks, Rob.
Old 08-22-02, 01:22 PM
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Brian would you mind e-mailing me your phone# at rx7r3@hotmail.com. Thanks, Rob.
Old 08-22-02, 02:28 PM
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I don't know about FD's, but on FB's the tach is hooked up to the sec. ignition module. My guess is that your ignition module(s), might be bad.
Old 08-22-02, 02:28 PM
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I still feel like its the main cat if your planting your foot down and there just isnt enough power to go over 10mph.

Also, this might be a wierd question but I have a reason.....what intake do you have??? Is it still stock or do you have one with a heat shield of some kind, kinda like the Pettit?

STEPHEN
Old 08-22-02, 02:29 PM
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check your email
Old 08-22-02, 02:36 PM
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Originally posted by Dragon


Not on the coil harness I have sitting right beside me that I pulled out of the closet to get the connector colors off of...


They may have changed colors in diffrent years though, just make sure the one on the end is connected to the rear coil, the one in the middle to the middle coil and the first one closest to the harness connector to the first coil
LOL...That's what happens when you post in the middle of the night....but you can't get confused since the coils have color coded stickers on them(black, white, blue).

This may be stupid, but have you changed your spark plugs?
Old 08-22-02, 02:43 PM
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Just took it to a dealer for a compression test

4.8
5.1
5.2
5.0
5.2
5.1
4.8

IS THIS BAD???
Old 08-22-02, 02:47 PM
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Brian I,m not getting your e-mail for some reason.
But I,m worried about my compression.
Rob.
Old 08-22-02, 02:51 PM
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Yes that is bad. You have 9:1 compression rotors, since its a new motor does it have warrenty? Was the previous owner full of ****??? Where was the motor installed at???

STEPHEN
Old 08-22-02, 02:52 PM
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Also, the funny thing about it is it doesnt look like you have a blow seal due to detonation because they are all pretty close to eachother.....this tells me the motor was either built wrong or the guy was feeding you full of **** cause that motor prob has 100K miles on it.

OR

Maybe they did the test wrong.

STEPHEN
Old 08-22-02, 02:55 PM
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Maybe when he said he just put in a new motor was he really meant was the motor was new to this car but came from a 150K mile T2 sitting in a junk yard.....I hope not though
Old 08-22-02, 02:56 PM
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5`s====== FUBAR...
Old 08-22-02, 02:57 PM
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Would it cause my car to run the way it does?
Old 08-22-02, 03:14 PM
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Could the car have been rebuilt w/3mm seals causing compression to be low?????
Old 08-22-02, 03:17 PM
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Could the compression #s be off due to the fact the car cannot generate high rpm's?
Old 08-22-02, 03:18 PM
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i had a very sim. prob. there is a vacuum line in the rear of the engine bay on the driver's side....i think?? it may be on the passanger's side, anyway it connects to a little black box (sensor?) located on the firewall......map sensor???
Old 08-22-02, 03:19 PM
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Was the car ported? this can drop the compression check some.. I still say it's ignition... That'll make her pop like a virgin and it'll cause the turbo's to spool faster... Ahh have you tried to just reset the computer.. disconnect the ground cable and push in the brake pedal for a few seconds then reconnect the cable and start the car.. I've seen the computers in serveral FD's freak out before if Fuel injectors or other things in the harness have beeen disconected and reconected while the computer had power...
Old 08-22-02, 03:40 PM
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check again
Old 08-22-02, 04:17 PM
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Originally posted by rx7r3
Could the compression #s be off due to the fact the car cannot generate high rpm's?

Well you dont actually have to generate high rpms because they dont actually crank the car for the test. You pull the plugs and efi fuse and turn the key so that the motor spins but doesnt crank.

To answer your question, lets say during the test you had a weak battery and the motor was tuning real slow like it was dieing that can cause low readings.

3mm seals and large ports will not cause readings like this. They can cause lower readings but it would be more like 8.7 instead of 9.0.

If they did the test right that motor has a lot of miles, when the readings are low on all seals like that its because they are totally worn out and have worn out weak springs OR the test was done wrong.

STEPHEN
Old 08-22-02, 04:23 PM
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Wait a minute.....WHY DO YOU HAVE 7 READINGS??????

It should only be 3 per rotor which is 6......you have 7 listed there. The other thing thats wierd is look at the pattern...... 4.8 5.1 5.2 then a 5.0 in the middle then 5.2 5.1 4.8 which is the first rotor but in backwards order. Thats really wierd!!!!! I dont think I've even seen anything like that, it would be VERY coincedental.

If thats really what they gave you for readings, I think I'd be going back for them to retest for free!!!!

STEPHEN
Old 08-22-02, 05:50 PM
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if it's a new engine they will be low because it hasn't broken in yet.. also if they did the compression check on the trailing plug's instead of the leading it will be lower
Old 08-22-02, 07:54 PM
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I tell you the engine sounds tight. I believe they did the test wrong also. So does my mechanic friend who has rebuilt dozens of 2nd gens. We believe its something electrical, Brian I just got in, I'll be calling you soon.
Thanks, Rob.
Old 08-22-02, 08:02 PM
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After putting my friends fc motor back in we had the same problem. After changing everything that we could think of, he just took it to a tuning shop here in japan. $300 dollars later they just changed the crank angle sensor.
Old 08-22-02, 08:45 PM
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Alright I,m gonna order a crank angle sensor tommorow. We'll see what happens!


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