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Old 10-01-2020   #16
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Re: Panda 100HP Coolant Sensor Measured Value

something wrong with the measurements 135C from your scanner


gauge would be off the top but reads in the middle


Fans would be permanently on full and red light on dash
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Old 10-01-2020   #17
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Re: Panda 100HP Coolant Sensor Measured Value

Thatís exactly what I thought.

Update: I removed the catalytic converter, cleaned 02 sensors, checked injector spray pattern, cleaned injectors, replaced the temp sensor. Still inaccurate reading from it

Also found the battery voltage to be at 12.05v just before I started the vehicle after repairs. That raises a huge red flag for me. I know 12.5v at least is acceptable but 12 is too low. Opened the battery and found zero water in there so topped it up and itís on charge now. My Mitsubishi Eclipse gsx has a faulty alternator and it also hesitated and didnít boost when battery voltage got low. So Iíll pop a new one in tomorrow morning
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Last edited by ChrisPRSA; 10-01-2020 at 17:39.
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Old 10-01-2020   #18
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Re: Panda 100HP Coolant Sensor Measured Value

Just drove the car, no improvement. Letís see if the battery solves it tomorrow
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Old 11-01-2020   #19
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Re: Panda 100HP Coolant Sensor Measured Value

So new battery is in, no improvement. With proper voltage going everywhere and a scan tool that doesnít read correctly I thought Iíd go in the old school way and grab the multimeter to start measuring.

First one to measure was the MAP sensor and right out the bat, problem. Supply voltage is solid at 5v and ground is perfect, signal wire on idle a whopping 2.2v at operating temp and constantly fluctuating. Listened with a pipe around the intake manifold and the slight split I found before which I thought was tiny ended up being a massive gape. Just next to the map sensor the manifold split right on the seam leaving around a 3mm gap between top and bottom. When I push down on it, itís less sever bringing the voltage of the sensor wire down to 1.2v which is closer to the spec.

Anyways intake has to come off. Not sure if it can be repaired tho
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Old 11-01-2020   #20
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Re: Panda 100HP Coolant Sensor Measured Value

I'd start with a fresh roll of Ducttape and seal it all off. If that improves the performance I'd find a "new" housing in a scrapyard or on Evil-Bay.

gr J
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Old 12-01-2020   #21
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Re: Panda 100HP Coolant Sensor Measured Value

I took off the manifold, used a good windscreen sealant and filled the entire gap. Just waiting for it to cure now. Fingers crossed
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Old 12-01-2020   #22
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Re: Panda 100HP Coolant Sensor Measured Value

Test drove the car and my acceleration is up from 15 to 12 seconds. So definite improvement but if I compare 0-100 with internet videos, other 100hps seem to rev up quicker. My rpms seem to hang a bit.

So my question is, redline it and drop the clutch off the line? If I take it up to 4000 and let go of the clutch, I have to get back on it quick to build some rpm again. How does your 100HP respond?
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Old 13-01-2020   #23
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Re: Panda 100HP Coolant Sensor Measured Value

Did you reset the ECU after fixing the vacuumleak?

gr J
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Old 13-01-2020   #24
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Re: Panda 100HP Coolant Sensor Measured Value

Are you referring to fault code clearing or an actual reset to reset auto adaptives?

Could you perhaps provide me with the procedure as my launch does not have this feature for fiat
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Old 13-01-2020   #25
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Re: Panda 100HP Coolant Sensor Measured Value

Disconnect the battery for half an hour. ECU looses it's memory, goes back to factorysettings and (after reconnecting and driving) learns new fuelratio.

gr J
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Old 13-01-2020   #26
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Re: Panda 100HP Coolant Sensor Measured Value

Iíll give it a go. The ecu was disconnected throughout the entire manifold job but Iím replacing the earth strap tomorrow as a final resort so I need to remove the battery.

Is there a hard reset to remove all saved data, ie number of over revs, long fuel trim and short etc?

Thank you for all the info. I really appreciate it!
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Old 14-01-2020   #27
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Re: Panda 100HP Coolant Sensor Measured Value

So today I put a 15mm earth cable in as well as checked the evap valve that it does close when the car is switched off. I also reset the ecu and relearned the throttle. Took it for a drive and still hesitating on top end.. There's literally nothing more I can check.

Coils perhaps?

Btw when it idles in getting intermittent purrs if that makes sense. As in.. Smooth idle and then a pur then smooth idle and slight pur pur... Lol... I wouldn't say misfire just fluctuating idle.

Also noticing black carbon deposits on the rear of the car.. Like little black spots over the whole back end.
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Old 14-01-2020   #28
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Re: Panda 100HP Coolant Sensor Measured Value

Okay so the more I think about it, the more I'm leaning towards timing.

If a car is advanced or retarted by a tooth, you will definitely see a loss in performance and driveability.

When I did the timing belt, the supplier did not have the 16v kit but they did have the 8v kit. Which I basically just used the crank lock and the belt tensioner tool, as far as the cams go, the gap in the camshaft is exactly 10mm, so I 3d printed a nut that fits the thread on the side of the special tool area on the cylinder head with an allen key cut out so that I can position a size 10 allen key through it. The fit was perfect and perfectly centered, also there is no way it could have moved from that position even if I tried.

Does the engine light illuminate when the timing is out on these cars? My obd tool, under start sequence does say: allowed. So usually that means the ecu is happy with the cam and crankshaft sensor position?

Has anybody changed their own cambelt on here?
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Old 14-01-2020   #29
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Re: Panda 100HP Coolant Sensor Measured Value

Quote Originally Posted by ChrisPRSA View Post
Okay so the more I think about it, the more I'm leaning towards timing.

If a car is advanced or retarted by a tooth, you will definitely see a loss in performance and driveability.

When I did the timing belt, the supplier did not have the 16v kit but they did have the 8v kit. Which I basically just used the crank lock and the belt tensioner tool, as far as the cams go, the gap in the camshaft is exactly 10mm, so I 3d printed a nut that fits the thread on the side of the special tool area on the cylinder head with an allen key cut out so that I can position a size 10 allen key through it. The fit was perfect and perfectly centered, also there is no way it could have moved from that position even if I tried.

Does the engine light illuminate when the timing is out on these cars? My obd tool, under start sequence does say: allowed. So usually that means the ecu is happy with the cam and crankshaft sensor position?

Has anybody changed their own cambelt on here?
If the crankshaft is rotated set on the mark, and the camshafts are lining up on the marks, then the valve timing is correct.
There is only one answer, it is either correct or not correct.
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Old 15-01-2020   #30
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Re: Panda 100HP Coolant Sensor Measured Value

If you have a missfire caused by missing sparks, the unused oxygen going down the exhaust causes the ECU to increase the fuel/air ratio. The effect on the O2 sensors is the same as engine running weak. Sooty exhaust results.


www.multiecuscan.net has data logging features which would allow you to see if there is a missfire at any point in the rev range.

An alternative cause of mucky marks on the back of the car is an oil leak. Check the gearbox gear shift seal and of course the drive shafts. Obviously check the engine for leaks as well.
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