My Baby Won't Start

Still have not checked the TPS have you?

928mac;1758 wrote: ha ha I am with you on that one Austin.
After you fix it there is always the TEST DRIVE

Great minds think alike, man! :cool: ha ha

Ben, no reimbursement is necessary. My friend, it would be a privilege just to ride over and see the car/check it over. These things are like a freakin' drug addiction. Coming out to look it over with you would be my way off getting my fix for the weekend.

The rich running symptom tells me that fuel starvation wasn't the problem before, when it was running, and it likely isn't the problem now. Sean, the TPS wouldn't cause rich running. Wouldn't that just effect the idle, and possibly cause a no start, if there was a problem there? Am I mistaken on this?

KilnRed;1773 wrote:
The rich running symptom tells me that fuel starvation wasn't the problem before, when it was running, and it likely isn't the problem now. Sean, the TPS wouldn't cause rich running. Wouldn't that just effect the idle, and possibly cause a no start, if there was a problem there? Am I mistaken on this?

No, the TPS won't cause rich running, but you want to start out with the basics first. You can spend days running through stuff and not finding out what the issue is until you start small. He had a serious idle issue. Start there, then move on. He has an idle problem, that can cause issues further down the line. If the LH isn't in idle mode, at idle, then it thinks the throttle is still in driving mode.

From there, my next step would be to check the Temp II wires that go to the sensor. Failure point due to age. The boot is kinked from the factory, the wires go with the boot.

Next step for me would be the MAF, and the best bet on that is to swap a known good MAF.

I am just trying to assist in steps, not have him jump in and buy stuff he won't need, and test things that don't have a regular failure. A noid light is only going to tell you that the injector is not firing, it wont tell you why, or where to look. That is one of the last things I would look at.

I agree now that we know it is running rich, that testing the injectors for power is useless. we need to know all the symptoms.

Do these cars have flood clear if you hold it to the floor like other fuel inj cars?

Most flooding on other models is the temp sensor 1st, maf 2nd

I guess my tendency to start worst-case scenario and work backwards is a minority approach. It's not like checking for an injector pulse is that time consuming. Neither is checking the TPS function. But neither check means much now that we know the car was previously running rich.

SeanR;1776 wrote: A noid light is only going to tell you that the injector is not firing, it wont tell you why, or where to look.

Really??? It tells me that I have a definite problem with my injector circuit. That eliminates quite a bit of the diagnostics right there.

928mac;1780 wrote: I agree now that we know it is running rich, that testing the injectors for power is useless. we need to know all the symptoms.

Good point.