Is the IDM getting power from the relay?

I took the plug off the IDM and it is getting power from the relay. The IDM is all corroded on the outside but looks okay on the inside. My question is would these be IDM symptoms?

What causes an engine to surge at idle?

A surge is usually caused by a fuel system management or drivetrain operation failure. When an engine’s computer can “hunt” or “surge” at cruising or idle speeds it is searching for program compliance, there is a problem elsewhere in the system. SPONSORED LINKS. Article published 2017-01-26.

Is the IDM replay on the firewall?

I find the IDM replay on the firewall will melt or burn the pigtail as well as the relay. The 2 ignition relays in the side panel are also prone to burning. IF you haven’t, start with the clean power harness. it runs from the batteries to a connector by the starter.

Can a used IDM burn up a new IDM?

The used IDM ran the truck perfectly. We also checked the UVCH to verify that we were not going to burn up a new IDM by overlooking bad connections to the injectors. Your problem sounds quite possibly IDM related.

I took the plug off the IDM and it is getting power from the relay. The IDM is all corroded on the outside but looks okay on the inside. My question is would these be IDM symptoms?

What causes idle surges on a car ECM?

Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges.

Can a bad throttle position sensor cause idle surging?

Is the IDM getting power from the relay?