My 89 Iroc-z engine issues
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Joined: Nov 2007
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My 89 Iroc-z engine issues Hey,
I was wanting to see if someone can help me out. My car has been running really rough when i start it. The RPM's keep jumping up and down between 500 and 1500 rpm's, and when i press the gas it dies.
I was suggested to get a new Mass Flow Air sensor, which I did and the problem still persist.
Im kinda stuck on what I should try next...any help would be greatly appreciated!
Thanks
I was wanting to see if someone can help me out. My car has been running really rough when i start it. The RPM's keep jumping up and down between 500 and 1500 rpm's, and when i press the gas it dies.
I was suggested to get a new Mass Flow Air sensor, which I did and the problem still persist.
Im kinda stuck on what I should try next...any help would be greatly appreciated!
Thanks
Thread Starter
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Joined: Nov 2007
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I haven't checked the fuel injectors yet, am I just making sure that they are tight and not damaged, or is there something specific to look for. Also I dont know what you mean about "check the prom"
On The Tree
Joined: Jul 2005
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From: Old Bridge "Raceway Park" N.J.
Originally Posted by cml11109
I was wanting to see if someone can help me out. My car has been running really rough when i start it. The RPM's keep jumping up and down between 500 and 1500 rpm's, and when i press the gas it dies.
You said you replaced the Mass Air Flow sensor, with no positive results. However, have you replaced, and/or checked, it's corresponding connections; the Power and Burn Off relays? You might want to double check to see if they're connected firmly, with no loose wire terminals. In fact, just replace them altogether, they're only $20.00 each, give or take....
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sorta fixed Ok, I re-did the spark plus and wires, new destributer cap, etc. I also found a vacuum leak, after doing all of that. The car started up great and was running great. I drove about 10 miles out and was on my way back when the car started to die everytime i took it out of gear mainly and sometimes it was between taking my foot off the gas and taking it out of gear. And then right before I got to the garage, it started idling fine again, any suggestions with whats going on with that???
