| Author |
Message |
John L. Jordan Jr. (Up2nogd)
Junior Member
Username: Up2nogd
Post Number: 90
Registered: 8-2002
| | Posted on Thursday, November 21, 2002 - 9:24 pm: | |
Anybody??
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John L. Jordan Jr. (Up2nogd)
Junior Member
Username: Up2nogd
Post Number: 87
Registered: 8-2002
| | Posted on Sunday, November 17, 2002 - 6:52 pm: | |
I'm sure the engine is peaking when it appears to hit the "rev limiter"? The car is running strong - I guess my question would be is there anything else that could be causing the tach not to register above 4k other than the tach?? Anybody have any ideas? --
Thanks - Johnny |
Lawrence Coppari (Lawrence)
Member
Username: Lawrence
Post Number: 395
Registered: 4-2002
| | Posted on Saturday, November 16, 2002 - 6:18 am: | |
I accidentally hit 8K once on mine. Did not notice any rev limiter interference. |
Hans E. Hansen (4re_gt4)
Member
Username: 4re_gt4
Post Number: 485
Registered: 4-2002
| | Posted on Saturday, November 16, 2002 - 1:03 am: | |
Not sure if it is related, but I've seen several older 308s where that tach worked OK until 3K-4K or so. Then it would go screwy, sometimes bouncing around aimlessly. In some cases, it was a loose connection and/or usually a ground. Worth checking. |
Giang Hoang (Spidersense)
New member
Username: Spidersense
Post Number: 28
Registered: 10-2002
| | Posted on Friday, November 15, 2002 - 9:53 pm: | |
John, I believe my dad's 328's tach does the same thing. Let me know what you find out. And definately you will feel the engine peak well before you can over-rev it, so I doubt you are over-revving. Did you drive the car before the tach went bad? |
Dave328GTB (Hardtop)
Member
Username: Hardtop
Post Number: 290
Registered: 1-2002
| | Posted on Friday, November 15, 2002 - 9:53 pm: | |
John,
I believe the 3.2 motors do, indeed, have rev limiters. I haven't double checked with FNA tech, but I found 3 reviews of 328's and 3.2 mondials that mentioned the rev limiter. One went so far as to say it was built into the microplex ecu. I know in my 89, I have hit it a couple of times. Sounds just like my 348 when I hit it. I have overeved QV's and never had this sound. They are not rev limited.
Tachs are a problem area in the 3.2's (about the only one!). I had an 87 5 years ago that kept going screwey. One reviewer mentioned that the tach read 7.5% low. Half speed is the most common symptom. The 89 I currently own reads about 15% low, hits the limiter at an indicated 7K +/-. With the 87, I sent it to Palo Alto twice. As far as I kow, current owner has not had problems. However, I have another recommendation I haven't tried yet but is supposed to be good:
Margaret Lucas@ Mo Ma in Albuquerque 505 766 6661. I plan to send mine there over the winter. Hopefully, it will work the first time.
Dave |
John L. Jordan Jr. (Up2nogd)
Junior Member
Username: Up2nogd
Post Number: 84
Registered: 8-2002
| | Posted on Thursday, November 14, 2002 - 10:32 pm: | |
Thanks Tom! How about a quick e-mail with the info if its not a problem? [email protected] - The car is running strong but the tach is just not reading correctly. I really appreciate it!
Johnny |
Tom Jones (Ferrarioldman)
New member
Username: Ferrarioldman
Post Number: 21
Registered: 6-2002
| | Posted on Thursday, November 14, 2002 - 9:42 pm: | |
Sounds like you are exceding the rev limit and floating the valves. This can produce broken valve springs or you could have other ignition issues. I have phone numbers and such at work. Will look it up tomorrow . |
John L. Jordan Jr. (Up2nogd)
Junior Member
Username: Up2nogd
Post Number: 83
Registered: 8-2002
| | Posted on Thursday, November 14, 2002 - 9:33 pm: | |
No Rev Limiter?? It sure sputters and cuts out if I push to hard? Got any numbers or info on these guys?
Thanks,
johnny |
Tom Jones (Ferrarioldman)
New member
Username: Ferrarioldman
Post Number: 20
Registered: 6-2002
| | Posted on Thursday, November 14, 2002 - 9:28 pm: | |
First, a 328 doesn't have a rev limiter so you better be careful there. My experience has been an internal problem in the tach for the few that I have had repaired. Palo Alto Speedo repair can fix it or there is another place in the NW area of the US I think but can't recall the name of it right off hand. |
John L. Jordan Jr. (Up2nogd)
Junior Member
Username: Up2nogd
Post Number: 80
Registered: 8-2002
| | Posted on Thursday, November 14, 2002 - 8:21 pm: | |
I have a 1986 328 GTS and the tach does not register over 4K. Everything runs/works fine but the tach appears to be registering 1/2 of what it is suppose to? I have run it up to the rev limiter in 1-3 gears with the same result 4K - can you calibrate the tach or does it need to be replaced?? Any ideas? |