I have recently purchased this 97 zr580 efi, and it started (ran but could not run more than 1000rpm without pumping the throttle) when picked up at 5 degrees outside. Now i have brought it home to my garage where its about 60 to 65 it will not start... is it the ECU or what would be more likely?
Came across a similar problem with the same type sled. Was told it was the ECU. But talked to a couple of other guys and they said it's not the ECU. They told me to try the coolant temp. sensor under the thermostat housing. Cost about $70.00. Just ordered one today. I'll let you know if it takes care of the problem. Another thing to check for is water in the fuel. Just a thought. The $70.00 part is a lot cheaper than $400.00 (used) to $2,000.00 (New) ECU. Let me know if you come across something different. Also, do you happen to have a wiring diagram of this sled. I could use one. If so send it to my e-mail address: [email protected] Thanks.
I've tested ohm resistance in the injectors and tps sensor, along with all the other sensors related to fuel. They have all checked out within the correct deviations. I'll try the coolant temp sensor next. Thanks and if i run across anything I'll post it!