Speedway Levin
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4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
Well Ive cleared the ECU codes, and timing still retarding :( I'm going to be a expert by the time this is sorted -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
Code 12 which is RPM signal but also related to the ignition circuit I can NOT clear, haven't given up yet -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
I got a all clear code from the ECU for a short time but 1 is back! I'm reading so many old forums most around 2009 to try and help with the problem -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
Ive cleared code 14 by replacing the ignitor coil. I can't clear code 12 !! I Replaced the distributor and also checked continuity of wires from distributor to ECU -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
I have tonight put the engine in diagnosis mode by joining TE1 and E1 on the ECU output, I then put my test light on the W ECU terminal and the test light earth clamp to the battery positive terminal ( found this on another circuit ) Very excited to get two codes!! 12 & 14 Both are related to the distributor and ignitor coils Over weekend I will fault find those two codes and also report back. Ive also learnt as I don't have a speed sensor connected the warning lamp would flash at high RPM and reduce the limiter from about 8000rpm to 7000rpm, which I don't think will be a problem although I will check that once I have fixed 12 & 14 -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
I won't be able to check engine check light untill Thursday or Friday, but I will -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
Greddy emanage blue from what I'm reading it would appear to take control on the engine, although I don't understand what the standard ecu would have left to control -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
The speed sensor is well gone, but it must be something like that. It would be good to know what causes Limp Mode I could narrow things down thatn way -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
Yes we do require a stock ECU, do you know what the minium requirements for the ECU are, I tried simulating this on our parts car. -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
Thanks Dave! No I don't have the dash or engine light, but will google search the engine codes and ECU output codes etc -
4Age 20V Sliver Top - Timing Retarding/running Rich
Speedway Levin replied to Speedway Levin's topic in Car Electrical
Thanks Banjo Yes Ive seen that link thanks, but he obvouisly had issues with the ECU itself. Our issue is different the engine still revs fine, its just running rich and due to the timming retard also under powered. I have read here on an old topic about the ignitor coil, which I have not yet tried -
HI Rolla Club I have a 1994 Toyota Levin GT Apex, 4AGE Slivertop which we have just converted into a Youth Saloon for racing Speedway in NZ. The mistake we made while removing the wiring loom was we run the engine and if we cut a wire that stopped the engine we would join it mark it and carry on, not giving "Limp mode" any consideration!! While tunning the engine I noticed it retards the timming about 7 degrees, the engine is also running rich. Over the past few weeks I have studied and tried to fix the issue, I did find a very helpful web site which involved a 4AGE Jet boat conversion. Here's a list of things I have already checked * The TPS, AFM, O2, and Knock sensors are all wired correctly back to the ECU * Taken the above sensors out of our spare car and tried them in the speedway car * Tried another ECU * Tried simulating the issue in our spare car by disconnecting sensors Its got to be simple I have missed. Does anyone know the causes of "Limp mode" in a 4AGE 20v engine