injectors

[shearphysics]

how many ohms should fuel injectors for a 1989 corvette have

[Schrade]

Originally Posted by shearphysics

how many ohms should fuel injectors for a 1989 corvette have

Check this article...
http://www.corvetteforums.com/m_37283/tm.htm

I don't know if ohm spec is in the article, but there is fuel pressure [complete] diags for TPI.

[Rimmer]

Test your injectors with a digital multimeter.
The resistance should be 16.5 ohms + / - 1.0 ohm.

This is for a 90, but believe they are the same.

[Ijustdontknow]

Easiest way to determine if there is a problem is, to ohm them all out write down what you get. No injector should be below 11 ohms and there should be less than .5 ohm difference between injectors

[Blue Bowtie]

Actually, the 1990-up Multec injectors are usually a lost cause at anything below 12.5 ohms cold. The older Bosch/RP injectors will still reliably operate the pintle with 12 ohms. The allowable variation for RP injectors is 12-16 ohms. Test them both cold and hot, and don't be surprised if some of those "good" ones fail when hot.

If you have a set that passes the solenoid coil resistance test, don't assume they are intact. Regardless of the solenoid coil resistance, pintles can stick, tips can be damaged or obstructed, spray patterns can be a dribble or stream instead of the intended conical atomization, all of which can affect flow and dispersal. You can have them tested, cleaned, and flow-matched at several specialized injector service centers.

The corvette Forums copy of that article is fairly informative, but if you have a real problem with TPI, check out the TPI section at the large ThirdGen F-Body forums.