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Mk1 F4R/172'd Track Car Project [Year 3 - Engine and Chassis Rebuild]
'92 172, Lotus Elise
Re: Mk1 172 Hybrid Track Car Project
the only thing i can think of, is it's hitting the 'neutral limiter'... it limits at about 6k in neutral iirc
the speed sensor is hooked up, though i'm not sure if different 'box ratios would confuse the ecu (i.e. it expects to be doing X mph at Y rpms)
get it remapped
the only thing i can think of, is it's hitting the 'neutral limiter'... it limits at about 6k in neutral iirc
the speed sensor is hooked up, though i'm not sure if different 'box ratios would confuse the ecu (i.e. it expects to be doing X mph at Y rpms)
get it remapped
Re: Mk1 172 Hybrid Track Car Project
cba wasting money on mapping it incase I want to do more engine mods in the future...
I shouldnt have a problem really though as you're running a diesel box? Speed sensor is defo hooked up too...
There is no abnormal fuel usage or anything, seems alot better than I thought it would be to be honest (consumption wise)....but not sure what the problem could be....
cba wasting money on mapping it incase I want to do more engine mods in the future...
I shouldnt have a problem really though as you're running a diesel box? Speed sensor is defo hooked up too...
There is no abnormal fuel usage or anything, seems alot better than I thought it would be to be honest (consumption wise)....but not sure what the problem could be....
ValverInBits
Vw caddy tdi
Re: Mk1 172 Hybrid Track Car Project
Some deisel 1.2 boxes have v short ratios, danpl6 was running 1.2 deisel box. Friend of mine was running a higher than 1.2cc diesel box on his willaims and 4th was v long and it didnt pick up 1st to 2nd so well as when on original jc5 willly box. Ph1 172 box would be choice imo.
Some deisel 1.2 boxes have v short ratios, danpl6 was running 1.2 deisel box. Friend of mine was running a higher than 1.2cc diesel box on his willaims and 4th was v long and it didnt pick up 1st to 2nd so well as when on original jc5 willly box. Ph1 172 box would be choice imo.
ITB'd MK1
Re: Mk1 172 Hybrid Track Car Project
could be a "cold" limiter too. Is the temp sensor hooked up to the ECU correctly?
the only thing i can think of, is it's hitting the 'neutral limiter'... it limits at about 6k in neutral iirc
the speed sensor is hooked up, though i'm not sure if different 'box ratios would confuse the ecu (i.e. it expects to be doing X mph at Y rpms)
get it remapped
could be a "cold" limiter too. Is the temp sensor hooked up to the ECU correctly?
Vw caddy tdi
Re: Mk1 172 Hybrid Track Car Project
Furrymuff I stand corrected on desiel models 1.5d and 1.9d sound more plausable. My friend with a williams3 fitted the 1.9d type box as I explained above and I am sure danpl6's hybrid was running a lower than 1.9cc petrol/or desiel box which was noted to have even shorter ratios in comparisson with a 172.
Furrymuff I stand corrected on desiel models 1.5d and 1.9d sound more plausable. My friend with a williams3 fitted the 1.9d type box as I explained above and I am sure danpl6's hybrid was running a lower than 1.9cc petrol/or desiel box which was noted to have even shorter ratios in comparisson with a 172.
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Re: Mk1 172 Hybrid Track Car Project
well I just got home....going to have a play with it this afternoon
700 miles was the total trip from leaving mine on friday to just getting back home...not had any problems with the engine etc (only brakes)....so im happy even though it wasnt as fast as it should have been
well I just got home....going to have a play with it this afternoon
700 miles was the total trip from leaving mine on friday to just getting back home...not had any problems with the engine etc (only brakes)....so im happy even though it wasnt as fast as it should have been
Re: Mk1 172 Hybrid Track Car Project
think may have sourced part of the problem (or maybe all)
plugged the ECU in to RSTuner....fault code: "Vehicle Speed Fault"...
Went into live mode, the ECU isnt getting a reading that im moving from the speedo cable (even though its wired up (I think the wires split, multimeter isnt showing its linked)....
So the ECU thinks the car is stood still all the time, apparently the 'stood still' limiter is lower than the normal one?
think may have sourced part of the problem (or maybe all)
plugged the ECU in to RSTuner....fault code: "Vehicle Speed Fault"...
Went into live mode, the ECU isnt getting a reading that im moving from the speedo cable (even though its wired up (I think the wires split, multimeter isnt showing its linked)....
So the ECU thinks the car is stood still all the time, apparently the 'stood still' limiter is lower than the normal one?
Christopher
ClioSport Club Member
Z4M
Re: Mk1 172 Hybrid Track Car Project
Yup! I knew it didn't sound right!
6k, not 7250
Yup! I knew it didn't sound right!
6k, not 7250
'92 172, Lotus Elise
Re: Mk1 172 Hybrid Track Car Project
it can still keep with a standard 172 whilst effectively short shifting lol
it can still keep with a standard 172 whilst effectively short shifting lol
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Re: Mk1 172 Hybrid Track Car Project
soon, im still trying to fix it
Just spent this morning trying to figure out why its not getting a speed reading, the wire is connected (Wire from speedo cable to the pin on the ECU), originally when I tested it I thought it wasnt connected, but when double checking (and getting the right ECU pin this time) it definately is connected, so im no closer as of yet...
Sorted a few other bits this morning also, swapped the clocks from the blue valver to mine, rev counter works perfect (Matteh will be pleased to know, non tinkered with ftw)....
Will update later if I get any closer!
soon, im still trying to fix it
Just spent this morning trying to figure out why its not getting a speed reading, the wire is connected (Wire from speedo cable to the pin on the ECU), originally when I tested it I thought it wasnt connected, but when double checking (and getting the right ECU pin this time) it definately is connected, so im no closer as of yet...
Sorted a few other bits this morning also, swapped the clocks from the blue valver to mine, rev counter works perfect (Matteh will be pleased to know, non tinkered with ftw)....
Will update later if I get any closer!
Re: Mk1 172 Hybrid Track Car Project
Few pics....swapped the speedo part of the clock over (milage etc) to the ph1 clocks from the blue valver, so the rev counter would be properly calibrated...
Then, started to tidy up the engine bay. I had been getting a wierd buzzing noise when going over bumps and the car would keep cutting out for a split second then coming back on recently...turns out the positive connector in the engine bay was slightly touching the ECU casing.....and sparking!
Anyway, ive relocated the ECU and changed the battery terminal now, all much much tidier...
Also finished painting the inlet manifold again, in some Renault 630 I had left over (color of the car)...
Still no closer with the rev issue...more soon!
Few pics....swapped the speedo part of the clock over (milage etc) to the ph1 clocks from the blue valver, so the rev counter would be properly calibrated...
Then, started to tidy up the engine bay. I had been getting a wierd buzzing noise when going over bumps and the car would keep cutting out for a split second then coming back on recently...turns out the positive connector in the engine bay was slightly touching the ECU casing.....and sparking!
Anyway, ive relocated the ECU and changed the battery terminal now, all much much tidier...
Also finished painting the inlet manifold again, in some Renault 630 I had left over (color of the car)...
Still no closer with the rev issue...more soon!
Christopher
ClioSport Club Member
Z4M
Re: Mk1 172 Hybrid Track Car Project
New plenum colour is much better!
New plenum colour is much better!
Re: Mk1 172 Hybrid Track Car Project
No I have a MK1 one from when I had my valver about 4 years ago! Never fitted it! Waste that was!
cant fit one to this now.....engine is in the way between the struts...
im guessing you mean a Mk2 one? Wouldnt fit anyway...
No I have a MK1 one from when I had my valver about 4 years ago! Never fitted it! Waste that was!
LY 182
Re: Mk1 172 Hybrid Track Car Project
re the rev issue... what ecu setup are you using??
did the ecu/looms come from a ph1? if so im assuming it had abs?
it may need plugging in to clip/dealer level diagnostics as there is an adjustment you can do where it reads the speed from the abs or the speed sensor
re the rev issue... what ecu setup are you using??
did the ecu/looms come from a ph1? if so im assuming it had abs?
it may need plugging in to clip/dealer level diagnostics as there is an adjustment you can do where it reads the speed from the abs or the speed sensor
Re: Mk1 172 Hybrid Track Car Project
ECU is from a 172 ph1 yeah, not sure if it had ABS or not.
The 172 engine loom has been adapted (basically the white connector cut off) and then the wires mated up to the corresponding wires on the valver connection blocks so they all work.
The speed sensor wire from the speedo cable is currently going to pin 53 on the ecu. The sensor is earthed, and has 12v power on igition, its just not showing a reading on the ECU (with RS tuner plugged in on live data mode). Ive tried two speedo cables (sensor built into the cable) and neither show a reading on the ECU side...
Did all ph1's come with ABS? thinking though, didnt the ph1's have a speedo cable and not a speedo sensor plugged into the box?
ECU is from a 172 ph1 yeah, not sure if it had ABS or not.
The 172 engine loom has been adapted (basically the white connector cut off) and then the wires mated up to the corresponding wires on the valver connection blocks so they all work.
The speed sensor wire from the speedo cable is currently going to pin 53 on the ecu. The sensor is earthed, and has 12v power on igition, its just not showing a reading on the ECU (with RS tuner plugged in on live data mode). Ive tried two speedo cables (sensor built into the cable) and neither show a reading on the ECU side...
Did all ph1's come with ABS? thinking though, didnt the ph1's have a speedo cable and not a speedo sensor plugged into the box?
'92 172, Lotus Elise
Re: Mk1 172 Hybrid Track Car Project
yeh, we have phase 1 ecus, so they should automatically be taking the reading from the gearbox speedo sensor.
I assumed that since both sensors were hooked up directly to the gearbox speedo drive and both had an earth and both had an ignition live and both had a signal wire that they'd operate the same way, but it seems more testing or info is needed
the mk1 speed sensor data should be a (12v?) pulse every 0.2m... anyone know how the 172 sensor works?
yeh, we have phase 1 ecus, so they should automatically be taking the reading from the gearbox speedo sensor.
I assumed that since both sensors were hooked up directly to the gearbox speedo drive and both had an earth and both had an ignition live and both had a signal wire that they'd operate the same way, but it seems more testing or info is needed
the mk1 speed sensor data should be a (12v?) pulse every 0.2m... anyone know how the 172 sensor works?
Re: Mk1 172 Hybrid Track Car Project
matt, i noticed something else also...
Car side of the loom..... it goes.......... 'YELLOW - WHITE - BLACK'.....guessing 'Ignition Live - Signal - Earth', but the speedo cable side of the connector has diff color wires....goes 'WHITE - YELLOW - BLACK', the yellow and white are swapped round.
I took the cover off the speedo sensor on the cable, but I cant tell which is what, ie which is igntion live and which is signal. Both my speedo cables are like this.....im guessing the color's of wire are not meant to match on both sides of the connector? so i should be ignoring that?
matt, i noticed something else also...
Car side of the loom..... it goes.......... 'YELLOW - WHITE - BLACK'.....guessing 'Ignition Live - Signal - Earth', but the speedo cable side of the connector has diff color wires....goes 'WHITE - YELLOW - BLACK', the yellow and white are swapped round.
I took the cover off the speedo sensor on the cable, but I cant tell which is what, ie which is igntion live and which is signal. Both my speedo cables are like this.....im guessing the color's of wire are not meant to match on both sides of the connector? so i should be ignoring that?
