meltboy1 Posted April 3, 2009 Report Posted April 3, 2009 89 grand prix, 2.8 I am putting the EGR blockoff plate on and I am not plannin on putting the AC back together either so I got a couple questions. 1: Will my ECU be all Fd up without the EGR connected or will everything run fine? 2: Anyone know the belt # for a 2.8 without AC? Quote
intern8tion9l Posted April 3, 2009 Report Posted April 3, 2009 i'm pretty sure you need the chip set up to have those things removed Quote
ManicMechanic Posted April 3, 2009 Report Posted April 3, 2009 I don't think belts are available anymore, but you can get a cheap bypass pulley for the A/C. Quote
BXX Posted April 3, 2009 Report Posted April 3, 2009 I don't think belts are available anymore, but you can get a cheap bypass pulley for the A/C. Yes they are.. You need the second idler pulley from GM for a Corsica or Beretta 2.8L w/o AC.. You just go to the part store and ask for a serp belt for one of those as well... And yes, you need a new chip burned for the EGR delete.. Quote
meltboy1 Posted April 3, 2009 Author Report Posted April 3, 2009 ok well I will hold off on the EGR delete then til a later date, but what would happen if I did delete it without getting the chip to handle it? There are a handful of corsicas and berettas at the yard, I am goin tomorrow so I will see if I can get one of them pullies there. Quote
BXX Posted April 4, 2009 Report Posted April 4, 2009 ok well I will hold off on the EGR delete then til a later date, but what would happen if I did delete it without getting the chip to handle it? There are a handful of corsicas and berettas at the yard, I am goin tomorrow so I will see if I can get one of them pullies there. The pulleys are about $25 from a GM dealer, and come with a new bolt and the spacer/washer If you deleted the EGR without getting a tune for it, your fuel trims will be off, it can hurt gas mileage, not to mention combustion temps will rise a considerable amount, so burning a valve becomes a big possibility. Since your PCM expects the EGR to be working and dump exhaust gas in (which helps cool down cylinder temps) it runs a leaner AFR... No exhaust gas to cool down cylinder temps with the leaner AFR you can burn a valve quite quickly... Not to mention you may experience more knock.. Quote
meltboy1 Posted April 4, 2009 Author Report Posted April 4, 2009 great, thanx for all the info! Quote
White93z34 Posted April 4, 2009 Report Posted April 4, 2009 I know you can run a shorter belt with no issues and no idler pulleys. however I do not know what that belt is for. my suggestion is to measure out how long a belt you need and goto a good autoaprts store and see if they can find one that will work Quote
SappySE107 Posted April 5, 2009 Report Posted April 5, 2009 Really, I would have assumed the computer would throw a code for the EGR not working, and then use the fuel trims and spark tables associated with no EGR. SES light yes, burned valves no. Quote
92supreme Posted April 6, 2009 Report Posted April 6, 2009 i have the 3.4 in my car that i installed a egr block plate and didn"t do any computer tunning and i have yet to see a check engine light. i have lower mpg. but one thing to know is that egr is only activated off idle and at cruizing. wich means not activated at full throttle and idle. so I don"t belive that a burnt valve is possible. Quote
jtwmechanic Posted April 6, 2009 Report Posted April 6, 2009 burnt valves typically are caused be an exhaust leak close to head allowing cold air to rush the exhaust valve cooling it to fast. Quote
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