So here's what happened: I was drivin along, and when I went to accelerate, the car falls on its face. If I barely gas it, its just fine. I'm thinkin TPS, and a trip to AutoZone confirms it. So I order a new TPS, install it and go for a test drive. The same crap happens. I come home, unhook the battery to let the PCM reset.. I give it 30 minutes or so and try again.. and the same thing happens. If I unplug the TPS altogether, the car doesnt stumble
This has confused all the local guys or anybody I can call for advice. And whether I have the TPS plugged in, I'm gettin about 15mpg. The big suggestion is that the PCM is takin a turd on me.. can someone confirm or lend an idea? BTW, its a '98 with an ECOtec swap and a 5spd, but I had to use an automatic PCM 'cause the original got fried (not my doing).
R.I.P. JessE Gerard 7.11.87 - 1.25.08
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Dude how many times do I and Chris W need to say you have wiring issues!!!!! Either the wires going into the TPS plug are not making connection or a cut wire somewhere else. I bet if you put a meter on the TPS wires (at different locations) you are not getting info to the ECU from the TPS.
FU Tuning
John Higgins wrote:Dude how many times do I and Chris W need to say you have wiring issues!!!!! Either the wires going into the TPS plug are not making connection or a cut wire somewhere else. I bet if you put a meter on the TPS wires (at different locations) you are not getting info to the ECU from the TPS.
That is what it was going to say. People are so quick to blame components, rather than go fro simple @!#$ first
- 2004 Cavalier - 124k, owned since new
ECU rarely ever go bad. If you have a different motor swapped in with different wiring, I can bet that it's a wiring issue. Get the volt meter out and start probing around.
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
now wait a minute John, even Chris is thinkin PCM now.. we're gonna check it soon, but he thinks the weather mighta compromised the PCM since it was in the junkyard for God knows how long.. besides, the original one with the swap went bad if you remember, so its not outta the question
R.I.P. JessE Gerard 7.11.87 - 1.25.08
The Radiation Nation Facebook Twitter Twisted Metal Alliance
Its da E 2 da V 2 da A 2 da N wrote:now wait a minute John, even Chris is thinkin PCM now.. we're gonna check it soon, but he thinks the weather mighta compromised the PCM since it was in the junkyard for God knows how long.. besides, the original one with the swap went bad if you remember, so its not outta the question
I'm going on record as it is not your problem.
FU Tuning
its probably your Ignition coils...my buddies would do that....check the catalytic convertor when it warms up..if its glowing red then its your ign coils...
j bodies are dope but i dont own one anymore..it got repoed..YAY
I tried to attribute the ignition to my hiccup problem, but Chris swears up and down that theres no way the ignition could be bad.. besides, we're blaming my fuel pump on the hiccups; my main concern now is my gas mileage and gettin rid of my "TPS" issues, be it the plug, wires, etc.
R.I.P. JessE Gerard 7.11.87 - 1.25.08
The Radiation Nation Facebook Twitter Twisted Metal Alliance
sounds like you need to work out one problem at a time...lol
My car may run 18s, but I can do your taxes in 10 seconds flat.
JBO lube - they would never have enough in stock and we'd never see RodimusPrime again
Evan the Gorilla wrote:So here's what happened: I was drivin along, and when I went to accelerate, the car falls on its face. If I barely gas it, its just fine. I'm thinkin TPS, and a trip to AutoZone confirms it. So I order a new TPS, install it and go for a test drive. The same crap happens. I come home, unhook the battery to let the PCM reset.. I give it 30 minutes or so and try again.. and the same thing happens. If I unplug the TPS altogether, the car doesnt stumble This has confused all the local guys or anybody I can call for advice. And whether I have the TPS plugged in, I'm gettin about 15mpg. The big suggestion is that the PCM is takin a turd on me.. can someone confirm or lend an idea? BTW, its a '98 with an ECOtec swap and a 5spd, but I had to use an automatic PCM 'cause the original got fried (not my doing).
My 95 2.3L was doing the exact same thing and changing the MAP sensor instantly cured the problem.
Vic
Its da E 2 da V 2 da A 2 da N wrote:does the ECO even have a MAP? I thought it was MAF (I dont even know if they're related).. I know we changed out quite a few sensors and the problem seemed to stay
Yes you have a map. We do not have a MAF sensor.
FU Tuning
