Vipermn1

Just started happening after Timing belt and water pump replacement?

Bilal928S4

Check the wire at the tensioner, it might be grounding out or not connected at all.

soontobered84

What brand timing belt was installed? Conti belts stretch and will give a warning light when warm.

davek9

You will have to back in and re-check the tension, but the real question is how/what procedure did you use to adjust the belt?
Once you confirm that mechanically it's all good to go, then start looking at the electrical.

Don't guess, that will get expensive

SteveG

Or the connection at the belt cover. The piece that attaches directly to the tensioner arm, is it braided or strap? I guess if it is intact it's OK either way, but the strap is notorious for breaking and was replaced w/braided.

outbackgeorgia

Conti belts will NOT show a warning light if tensioned correctly. There is not that much "stretch" in the belt. You have something that needs to be corrected, don't write it off to "belt stretch"!
Dave

Landseer

Ditto, been running a pair of conti belts on warning light cars. No issues.

Belt might be loose.

Or, also likely, 2mm thick washer / spacer where tensioner meets tensioner arm was left off.

Vipermn1

False alarm, everything is good. Car had been sitting for 12 years not running, before we did a bunch of work on it. Running EXCELLENT, TNANK YOU Chris and Dan at COHO Automotive! YOU GUYS ROCK! Happy Father's Day To Me!