| Author |
Message |
Warren E. Smith (Magoo)
| | Posted on Wednesday, August 08, 2001 - 4:48 pm: | |
Cotty, Not to give you a short answer but go to the KEYWORD on the introductory page of F.C. and type in test pipes,That should tell you what you want to know. A lot of info. |
Cotty Lowry (Cotty)
| | Posted on Wednesday, August 08, 2001 - 12:24 pm: | |
Thanks for the advice. No I wasn't overrevving it for extended periods, just up to about 7K throught the first 3 gears then stopped. I guess I'll just have to keep an eye on it.
Other than breaking Federal law, does replacing the CC with a hollow tube, or modifying the interior of the converter, would it upset the electronics of the motor? |
Krister Ripstrand (Krister)
| | Posted on Monday, August 06, 2001 - 3:18 am: | |
Hi Cotty,
I have a -92 Mondial t, that is a 348 engine. If it works in a similar fashion, on your 328 with cats, then you will have two temp sensors, just behind the catalytic converters. These are very simple thermal devices not causing any problems unless someone violently fiddles with them. A known problem on the 348 engine is the interface circuit, converting the thermal sensors resistance proportional to the temperature into a voltage suitable for the engine mgmt system (EMS) to work with. This unit fairly often needs to be changed. A faulty interface unit can cause this kind of problem. So it does not realy have to be the cat overheating. A simple test is possible to do on the 348 engine, before you start measuring the actual cat temperature, which needs special equipment. On a 348 the parts, temp sensor, interface circuit, EMS, are doubled, each serving half the number of cylinders. The faulty indicator lamps are also doubled, reading "slow down 1/4" or "... 5/8". The simple test is performed by exchanging the interface circuits, and observing if the faulty indicator light moves accordingly.
Hope this can be of some help /Krister |
Warren E. Smith (Magoo)
| | Posted on Sunday, August 05, 2001 - 9:39 pm: | |
Your cat could be breaking up inside causing a restriction thus a hot cat sensor causing your light to go on. Then again you could have been running the hell out of it and the cats started to heat up. Were you over reving for extended periods of time? That'll do it. |
Cotty Lowry (Cotty)
| | Posted on Sunday, August 05, 2001 - 8:59 pm: | |
Last night after blowing away some college kids by wrapping it up to about 7000 grand in several gears, I noticed a great big red light in the lower LH corner of my instrument cluster telling me to slow down. Does this car have a conscience I thought. I pulled over to grab my manual and realized the manual was at home so it wouldn't get stolen from behind the seat. All gauges said things were fine, so I went home slowly. By the time i got home it was only flashing, not on all the time.
The manual tells me that this is the ABS light, but upon closer scrutiny the Errata page of the manual says the book is mislabeled and it is the Cat converter overheating light, and if the light is on steady the converter can start to "grow" I checked the back of the car and it seemed the same size so decided it was a typo for "glow"
Anyway, just because i stomped on the gas, is this any reason for the catalytic converter to get all bent oout of shape, or is there something else wrong with the tune of the fuel injection, etc. that I should address. the book says if the light is on, to shut off the car and have it towed to the mechanic. Glad i didn't have the book with me. |
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