1992 348 Dreded Check Engine 1-4

Did you pull the ECU code? It can point you in the right direction.

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As mentioned above - you can pull te ECU Codes.
From http://www.my348.com/

"
How To Check The 348 A/F ECU Diagnostic Codes (non-Euro 348's):

Thanks, ernie

Remove the cover(s) behind the seats so that you have access to the ECU's.

2) Place the key in the ignition and turn it to the (on) position, but do not start the car. You will see the two Check Engine Lights (CELs) on the instrument panel illuminated (if not, then you've got burned out or missing dash bulbs*** and can't proceed until new bulbs/LEDs are in place).

#2a) Make sure that the transmission is not in gear. Now start the engine, and let the car idle. Wait for all the dashboard warning lights to turn off, then follow the rest of the procedure for pulling the codes.

3) Push and hold down the button** (located next to each ECU) for 5 seconds, then release it. When you are holding down the button for those 5 seconds you now should see the dashboard check engine light illuminate for the ECU you are on (check engine light 1/4 or CEL 5/8 depending upon which ECU button you are depressing).

**Oh, you don't have a red button?! Not all 348 models have them. You'll need to order two parts: tester cable 146196 and button 145810 thanks, stevew

***Oh, you've got a Euro 348 that doesn't have CEL's?! You'll need to add two bulbs under your instrument gauge console (two phillips screws to remove). This will give you the U.S. model electronic engine diagnosis functionality.

4) When you let go of the button you will see a pause and then a long flash for 2 and 1/2 seconds, a pause with no flash for 2 and 1/2 seconds, then begin the flashes of the engine codes. The long flash indicates the beginning and end of the code. Then it repeats the same code, until you move on to the next code.

5) Each number of the code is flashed for 1/2 second followed by a pause and then the next number in the codes is flashed. For example you will get the long flash indicating that the code will start, a pause, three flashes, pause, two flashes, pause, one flash, pause, four flashes, pause, a long flash indicating the code is finished. If this were the series of short flashes you got, the code would be 3214.

6) After you pull a code you will notice that it just keeps repeating. To get to the next code what you want to do is wait until the long flash comes on after the code. When the long flash comes on you want to hold down the ECU button for the whole flash and let go of it in the middle of the pause. You should then see the check engine light give you another long flash to indicate the beginning of the next code.

7) When the last codes has been pulled, you will get nothing but long flashes telling you that there are no more stored codes.

8) Now that all the codes have been pulled you will want to clear the ECU of the stored codes. When the ECU's is giving nothing but long flashes, you need to push and hold down the ECU button for 10 seconds to clear out the old codes.

9) If needed, repeat the process for the other A/F ECU (348's have two).

10) The A/F ECU Codes are explained below.

NOTE: contrary to a long-standing myth, 348's do *not* store the above trouble codes after the battery has been disconnected. 348's have a battery disconnect switch above the car battery to quickly disconnect the battery.

Also: Euro cars *can* check these codes, however, this may require a Ferrari tool.

NOTE 2: Our 348's store two types of errors, transient and permanent. If your CEL went out, you had a transient code. The error was recorded, but your system hasn't seen it again. The "permanent" codes will remain stored in ECU memory for 50 starts/starts of your car, even if you fix the problem (unless you clear the codes manually or disconnect the battery)."

 

There is a master list. Pul the codes and I'll tell you what they are. It's only a clue. Not a definitive answer.

 

Exactly depending on the code it's either specific or directional. More often directional meaning one of N number of things. But you have to have the code first.

You can find the codes on my348.com

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1113, throttle potentiometer. Probably the throttle plate potentiometer is out of range or broken. You need to measure its range of motion, match it to the other side and see if the values are the same. If not, you may need to replace it.

 

Good result, where did you find the parts for that price?

 

BOSCH: 0280122001, 0280122004, 0280122008
FERRARI: 142434
ALFA ROMEO: 605493590
FIAT: 60549359 7637025
CITROEN: 1628L1 72408124 96038938
GM: 826924 90323839
HYUNDAI: 3517022001 3517022010
KIA: 0K01118911
PEUGEOT: 1628L1 72408124 96038938
PORSCHE: 94460611600 94460616600
RENAULT: 7701047921
SAAB: 885719 8857915
SOLEX: 72408127
VOLVO: 1336385 3450030

The Chinese knock-offs are about $8.

 

Don't do the Chinese knock off.

 

Most fuel, ignition parts are Bosch and if you xref the order Bosh numbers from rock auto or where ever you can get the same part as the one from Ferrari for 1/3 the cost. Ferrari Ignition and coils $750 about $600 per side from Ferrari. From Porsche reseller on ebay (same one used on 964) about $200 per side.

Those TPS sensors from Ferrari $375. Nuts you can find them for under $30 all day

Same goes for IAC and fuel pumps etc etc etc. Always shop for the part by part number first.

 

$200 for the ignition coil is way too much. It is Bosch 0 221 503 407, available at some $40-50. Also made by many other manufacturers and used on many cars.

Alfa Romeo, Audi, Citroen, Fiat, Honda, Peugeot, VW, Range Rover etc.

HELLA 5DA 749 475-041
BERU 0040100233, 0040100234, ZS234
BREMI 11883
DELPHI GN10211-12B1
NGK U2006, 48025
MARELLI 060810175010, BI0022MM, BAE680AG,
Etc.....

 

I mean both the coil and the ignitor as a pair per side for under 200.

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Sorry, I overlooked. The ignitor is Bosch 0 227 100 200 (and also 201, 202, 204, 213, 215). Other brands (not knock-offs) are cheaper, $30-50:

VALEO 245525
BERU ZM026
HÜCO 138401, 138402
STANDARD LX-932
HELLA 5DA 006 623-601

 

Correct (this is actually Canadian so slightly higher)

https://www.amazon.ca/Bosch-0280122001-Throttle-Position-Sensor/dp/B000UIOQT8/ref=sr_1_1?crid=2UNSZC20S5MJG&keywords=0280122001+bosch&qid=1655824385&sprefix=0280122001+bosch%2Caps%2C52&sr=8-1

 

I think the one ending in 4 is a previous #

 

Cheers to that from the future. Tinkering on the Fcar is how I always hoped it would be. Happy Father’s Day from 2023.


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