C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1990 ecm bad

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Old Jun 22, 2022 | 04:26 PM
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Default 1990 ecm bad

going to look at a 90 zr1 with its ECM replaced. Car has 28k on odometer. What should I look for or be concerned about.. Seller has no paperwork for repairs made.......
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Old Jun 23, 2022 | 08:26 PM
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doesnt really matter, there are going to be things to fix. just check the usual stuff, pressures temps etc.

one thing to try would be turn the power key on and open the car up to a 6700 shift. see if any issues. quite possibly there will be and it will be a fairly easy diy if you are handy but dont tell the vendor that.
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Old Jun 24, 2022 | 01:41 PM
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Originally Posted by ihatebarkingdogs
**** that. The next owner of my ZR-1 can take it to red-line all he wants AFTER HE OWNS IT! Not before.

I don't test drive cars without the owner present, nor do my cars get test driven unless I'm in the right seat. If anything pops or goes wrong, we both know the circumstances under which the malfunction occurred.
im not sure where that came from but maybe the op is going to look at your car?
i believe stock redline is 7072rpm.

Redline does not equal explode haha.

Perhaps the OP could ask the seller to take him for a drive and demonstrate the secondaries function? That was the purpose of the high rpm test i suggested. Many ZR-1’s have failing/weak/failed vac pumps which cause secondaries cease proper operation. That was the point of a high rpm test suggestion.

Op, what did you end up doing anyway?
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