newkie

So, my car (1989 951) starts up just fine, but it wont run for more then 5 seconds. Using the throttle kills it even faster, i i disconnected my MAF and, no difference, wich leads me to believe it has something to do with that, its getting all the juice it needs thought. So unless it's broken i don't know what i might be.

For some reason i disconnected the TPS and the car slowly reved up to 1400 rpm and then down towards idle again, that time it ran 15-20 sec, almost thought i found the fault, again use of the throttle seems to kill the car with the TPS disconnected to.

It's almost like it dies when it hits idle. Checked the DME-relay to, seems to be in working order. And it's not like, *Cough, cough* *struggle* *Die*, it dies almost as if you switch it of...

Im all out of clues, my MAF-kit provider will be helping me to check if the MAF-meter is broken, later on, but theres no reason to suspect that. It's like 3 or four weeks old and hardly has dust on it. No scratches or marks...

any ideas?

Keithr726

Try you give it throttle (car on or off) do you hear the TPS click when it opens and closes? It could be the position that the MAF is at, try rotating it.

I hate having any type of idle/driving problems. Yesterday my car was idling at 500 RPM until I realized two of the injector harnesses came unplugged.

Ski

this sounds like a case of the MAF having voltage but not enough to run it. Where are you getting your power source from?

sparkyman215

that sounds exactly like what happened when my MAF did not have enough voltage. Almost positive that is your problem.

newkie

I know one of the sources is the Diagnostics port (12v). the othe one is spliced in to the original LMM harness, it gives almost 5v (like 4,5) supposed to give 5v.

newkie

Just realized a new thing, whas out testing around in the dark. My dashboard light has been changed to a LED soloution with a microcontroller and RGB-leds, i can program my dash to change color at different RPM (Shiftlight) A friend of mine (Electrical engineer) designed it. However, it's set to change from white to red at 6k rpm, and when i turned the ignition on the dash turned red, this probably means that rpm signal is at the top as soon as i start the car, the needle doesen't move though. could this have something to do with it?

Heres a clip of the shiftlight to enjoy: http://picasaweb.google.se/sjolund.d...93021881701186

reno808

Newkie thats pretty cool.

BlacknRedGT

Are you sure the speed and ref sensors are correct??? The needle should at least move a bit when trying to crank. I know I had the same problem as you and it turned out to be a bunch of vacuum leaks.

those leds/led in your car are pretty neat

Keithr726

That is AWESOME!

xsboost90

disconnect that dash light and see if it runs- maybe taping into the signal is drawing too much and not giving something to the maf- not that i know how those work alot but never know.

newkie

Thanks i like it to

It does move, i just expressed myself badly. The revmeter moves when the engine runs. What i meant to say is that the microcontroller in my shiftlight-dash-thingy seems to think that the revsignal is at 6k RPM or more as soon as i turn the ignition on. This however does not make the revmeter move...

It's kinda neat

The dashlight does not give out any signal outside the board its built i
on, all it needs is a powersource and revsignal. so that wont alter the revsignal.

newkie

Another thing i failed to mention is the fact that my car has immobilizer, could that thing cause this?