So I picked up an aldl cable to get my readings, check for codes, senors working ect. Now all I am trying to do is compare these to a fiero thats not running poorly like mine(poor acceleration under load) and see if it will help lead me to the right thing I need to fix or at least a general direction. So I came to the place with all the smart people because I couldn't find anything online, in my user manual, repair manual, ect. My car is an 85gt 2.8l .
Hard to say without more context, but what's with the single low oxygen sensor reading, and the coolant temperature never changed from very cold? How long was the car on? First few readings appear to be before the car was started, and with it just sitting there in park/neutral?
Hard to say without more context, but what's with the single low oxygen sensor reading, and the coolant temperature never changed from very cold? How long was the car on? First few readings appear to be before the car was started, and with it just sitting there in park/neutral?
Ya so first reading was car at idle and then later readings were reving car
Ya so I got that and it worked one time and then when I try to use it again and pull up the datalogs it wont open anything? Didnt change anything it just stopped working.
The first thing I like to check is that both the Manifold Air Temperature and Coolant Temperature sensors are working properly. After the car has sat all night, see what the readings are. You can plot multiple readings on the graph at once, and ALDLView will also save GIF's of what you're looking at.
Here's an old reading I just randomly grabbed of my Formula. Notice how when the engine starts, the two temperature readings are very close to each other.
The first thing I like to check is that both the Manifold Air Temperature and Coolant Temperature sensors are working properly. After the car has sat all night, see what the readings are. You can plot multiple readings on the graph at once, and ALDLView will also save GIF's of what you're looking at.
Here's an old reading I just randomly grabbed of my Formula. Notice how when the engine starts, the two temperature readings are very close to each other. Ya I just uninstalled and re downloaded both winaldl and aldlview and aldlview still wont show anything, does any one have readings in their fiero that I could compare mine to to at least see if its close or not?
I don't see the Manifold Air Temperature readings at all, and the maximum Coolant Temperature of 141°F is way too cold.
Do you actually have a thermostat installed? If you do, what temperature is it rated at? Should be 195°F.
Ya know thats a good question lol, when I got the car there was one sitting in the trunk that looked kind of roughed up and I ended up throwing it away because I assumed the previous owner had swapped them and just hadn't gotten rid of the old one.And I can post the MAT readings from warm drive if that would be helpful?
Ya know thats a good question lol, when I got the car there was one sitting in the trunk that looked kind of roughed up and I ended up throwing it away because I assumed the previous owner had swapped them and just hadn't gotten rid of the old one.
The last thing to do is to assume anything about a car and how it's been previously treated. I suspect you have no thermostat installed. Spend a couple extra dollars and buy a superior 195º thermostat - Stant SuperStat 45819.
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Originally posted by Monkeybean007:
I can post the MAT readings from warm drive if that would be helpful?
So it had no thermostat in it, and in the process or checking the gasket on the inside of the cap broke and so it started leaking antifreeze yay.... So now I ordered a new thermostat, and cap which will be here later tonight.
Your next step will be properly "burping" the cooling system. I've used the following procedure with half a dozen different Fieros...
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Originally posted by Patrick:
* Make sure rad cap is the proper one for Fiero use. The catalogs are wrong! You want a non-vented one, * Check that the overflow tank and the small hose to the rad are both in good shape. Otherwise air gets sucked in. * Ensure that coolant level in overflow tank is at the "Cold" level. * Position rear end of Fiero higher than the front. * Remove thermostat housing cap and thermostat... and then add coolant to thermostat housing with rad cap also removed until coolant runs out the top of the radiator. * Re-install rad cap.
* Continue to add coolant until you see the level come up to where the thermostat normally sits. * Put thermostat cap on and turn just barely enough to hold cap on. * Start engine and run for about 30 seconds. * Remove thermostat cap and check coolant level. * Repeat last four steps until coolant level no longer drops.
* Re-install thermostat and thermostat housing cap.
As long as there are no blockages anywhere in the cooling system and the water pump is circulating coolant, you should be good to go.
Thanks for the tips on burping the system , I burped it tossed the new cap and thermostat in and my temp gauge actually went up lol..... still didn't fix my issue with acceleration though.
