1991 L98-At WOT engine boggs down and nearly stalls.

[Schrade]

OK....Here it is.......if anyone has the same problem #1 check your fuel pressure (mine was and is good). # 2 make sure your cats are not plugged up.....# 3 last thing I checked after "dicking" with it for almost 3 weeks and having someone who I THOUGHT knew what they were doing work on it (should have done this first) I did an easy check with an OHM meter....check the injectors FIRST. Mine were bad (half of them) at 8.3 to 8.7 OHMs (OEM injectors are 16.5 +/-- .5 OHMs). With all of the talk about junk OEM injectors on the various sites on the L-98 TPI engines I should have checked that first as its an easy job to check the required OHMs. The hardest part is replacing them but if you have a repair manual (and can read) and can tell a tork socket from a wrench you can do it yourself. While your in there you might as well install an adjustable fuel regulator. Damn late model computer cars. I want my 435 HP 67 car back. Screw the gas milage.

Mechanics don't make money doing PROPER diagnostics. They break even at best when they do this.

They DO make money when they do a scan, read a DTC faulty MAF, for example, tell you "It's probably a faulty MAF; you want us to replace it?" and replace a good one without finding out that MAF wire is chafed or cut. You leave the shop code cleared, open loop, broker, problem fixed till you get closed loop.

 

[redvette91]

Up date

I installed the new ACCEL injectors I ordered from Summit after OHM checking them first to make sure they were in spec. Its a major job for an old guy who is used to a carburator. The car now runs like new. The whole problem was 4 bad original injectors (20,000 miles) that should have been caught by a so called ASE certified mechanic. They changed the ECM, coolant sensor, exhaust pipe that had 2 mini cats, and checked fuel pressure, etc. (a waste of time and money). I checked the distributor, pulled the fuel pump to check the sock on the pick up and found the OHM's were off on the injectors. I have a few cuts and scratches on my hands and invented a few new cuss words but at least I know its done right. My suggestion is to DO YOUR OWN WORK and dont rely on so called repair shops if you are a car guy. Buy a volt meter and fuel pressure gage and check things out on your own FIRST. :bash