1G car bogging intermitently

[Kyle Hunter]

I am researching this for a friends car that is intermittently bogging down.

The car is a 1991 Eagle Talon, 5spd, turbo, FWD

- The problem comes and goes while idling, accelerating, and/or holding a steady speed.
- The problem is not seen until after coming up to temp
- When the bogging comes in to play, the tachometer drops its reading by 1/2 ie. even tho the engine must still be turning 2k rpm the gauge will drop and show 1k revs. Once the bogging goes away the revs read back to 2k.
- When the bogging starts while holding speed, the boost gauge indicates that boost is being built

Has anyone experienced this problem before, what do I need to look for to fix it?

Any and all help is appreciated, and please keeps comments, questions, and suggestions coming, I would like to get this car running right this weekend.

Thanks;
Kyle

 

[laserspeeddemon]

I immediately think of the ECU caps failing. My Laser did this exact thing and a shop replaced everything. Look back, I know for sure 100% that it was my ECU.

I got ripped off, but they were vital in my decision of doing ALL my own mechanic work.

So pull you're ECU and open it up. Might smell like fish.

 

[bling5tatus]

+1 for borked ecu.

 

[Kyle Hunter]

Alright, we replaced the ECU with another ECU, the problem persists. Could the 2nd ECU be bad as well?

 

[xxraptor660xx]

Alright, we replaced the ECU with another ECU, the problem persists. Could the 2nd ECU be bad as well?

Did you open the first one? Did it smell funny? Did you open the 2nd one? Did IT smell "like fish"?

 

[Kyle Hunter]

Opened the first one. It did not smell strange at all, but you could see where it looks like something has leaked out of two of the capacitors. Have not opened the second one, I guess we'll get on that.