What was the problem with my 1988 IROC Z 350?

My 88 Iroc-z 350 did the exact same thing. It does it every now and then. Every once in a while it would get so bad that it stalled, throwing the check engine light on. I took it to the garage, and they said that they got a mass air flow trouble code, but they couldn’t find the exact problem.

What kind of transmission does an IROC Z28 have?

The LB9 was available only on the Z28 and the IROC-Z model with the TH700-R4 automatic transmission. A total of 205 IROC-Zs equipped with the LB9 305 with the G92 (Performance Axle Ratio) option were made in 1985.

What’s the idle speed of a 1988 Camaro?

When in gear (ex. Reverse, Drive, 2nd, 1st) my car idle “settles” around 750 on the tach, but then starts to fluctuate around there, moving up to 900 (or so) then dips down to about 500 on the tach. While the idle speed is fluctuating my voltage drops dramatically.

Why does my IROC Z 305 Ping so much?

You will get some pinging due to no EGR flow, but if the idle or just off idle improves, the EGR is opening too fast due to carbon buildup inside the valve and must be replaced.

Why does my Camaro have an idle problem?

Has idle problem about one day a week. Take a real good look at the throttle “butterfly” valve. They have a tendency to get buildup with dirt and will stick slightly open, confusing the computer into thinking that you are pushing on the “go” pedal.

What was the horsepower of a Camaro IROC Z in 1986?

For all the shortcomings the IROC-Z car suffered during the 1986 model year, 1987 was shaping up to be a good year. For starters, a five-speed manual transmission was now available for the LB9 5.0-liter TPI engine. This combination was good for 215 horsepower and 285 lb.-ft. of torque.

What’s the 0 to 60 time on a Chevy IROC Z?

Road and Track tested the IROC-Z equipped with the 5.0-liter LB9 and manual transmission and garnered a 0 to 60 time of 6.9 seconds and a quarter mile time of 15.4 seconds at 91.5 mph. Chevrolet started churning out the first batch of IROC-Zs equipped with the 1LE performance package this year.

What’s the 0 to 60 time of a Camaro TPI?

And much to the chagrin of the automotive enthusiast, the TPI was still only available with a four-speed automatic transmission. Needless to say, with the Mustang GT’s 0 to 60 time of 6.0 seconds versus the Camaro’s time of 7.3 seconds (with the L69 engine), it seems the Camaro brought a knife to a gunfight.

What’s the minimum idle speed for a 1988 350?

For the car we are using (1988 350 AT), the minimum air or idle speed should be a 400 RPM. I highlighted the needle on the RPM gauge as well as marked what the goal for this vehicle should be at (400 RPM). If the speed is off, there is a torx screw on the side of the throttle body on the driver’s side.

How to get access to the IROC dashboard?

This document provides detailed information on the steps for getting access to IROC. Five Steps to Getting IROC Access 1 Authenticate – Go to https://iwfirp.nwcg.gov and click either eAuth or Login.gov, depending on which one you have. If you have both, use eAuth. 2 Select IROC – Select IROC from the FAMIT Dashboard of available applications.

What can I do to my 305 TBI engine?

Easiest fix is to replace it with a 3″ tall 14″ diameter open element filter with a flat base. You can drill a hole in the base to put your IAT sensor in. Also toss the choke collar that is between the TBI and the air cleaner assembly. Good for around 5hp on a 305 car and again mandatory for any decent engine upgrade.

How much air flow does a 305 TBI have?

The TBI unit. The stock 305 and 350 TBI unit has 2 (1 11/16″) bores which flow 450 cfm of air. Up to 230hp engines that air flow is fine. you can do the ultimate TBI mods to the stock 42mm TBI unit and get that air flow up to 500cfm without increasing that bore diameter which is plenty for any 305 engine that you can run with TBI. 7. Injectors.

When did the Camaro Z28 become a race car?

From 1984 to 1989, IROC chose the “newly” designed Camaro Z/28 as the official race car of the series. Chevrolet decided the celebrate the rebirth of the IROC series by making a commemorative Camaro model inspired by the IROC race cars. This is how the Chevy Camaro IROC Z/28 was born.

What was the RPO code for the IROC Z in 1990?

The RPO code to look for in a 1988 to 1990 IROC-Z is Z28 (since the IROC-Z “replaced” the Z-28 from 1988 to 1990, GM elected to use the Z28 RPO code for that option from 1988 to 1990). As a little tidbit, the Z-28 resumed production AS a Z-28 for the 1991 model year as GM’s licensing for IROC ended December 31st, 1989.

When did the 1990 Camaro IROC Z come out?

The limited number of 1990 IROC-Z’s is accounted for the number of cars produced, under the IROC license, until December 31, 1989 for the 1990 model year. To narrow down what model year “sub era” of IROC-Z you are looking at, play close attention to the IROC-Z logo on the door.

What kind of engine does the IROC Z28 have?

The IROC Z came equipped with either a 305cid or 350cid engine depending on the model. The 305cid only made a measly 210 horsepower or 230 horsepower with the optional G92 performance package.

What was the top speed of the 1985 Camaro IROC Z?

Hot Rod magazine put the IROC-Z with the LB9 TPI to the test for their February 1985 issue. The IROC-Z sprinted from 0 to 60 in 7.0 seconds and ran the quarter mile in 15.0 seconds at 92 mph. Hot Rod proclaimed “The IROC Camaro is a street fighter with all the right moves: it’s handsome, powerful, and agile with a gentleman’s finesse.”

What causes a Chevy Corvette 86 TPI to stall?

It never stays constant. Its stalling under a minute after start up, and it will stall once the idle drops if I rev it while its in P. Also stalls sometimes when shifting into gear (from R to D). I tried changing out the fuel pump with a new one, but then it would not start.

What causes a Chevy 350 to backfire when idle?

If a main vacuum hose such as the power brake booster feed line has broken or failing off it will cause a lean backfire due to the additional air allowed into the engine intake manifold. This problem will be accompanied by high or low engine idle and a harder to push brake pedal than normal.

Why is my fuel injection system plugged in?

The electric fuel pump installed for a fuel injection system will draw considerable more volume of fuel from your tank than your old system did. If there are any contaminants in the tank this many times will plug up or greatly restrict the flow of fuel to the system causing many issues. Step by Step Troubleshooting guide.

How to troubleshoot your TBI fuel injection system?

Troubleshooting your TBI Fuel Injection System Most of the problems encountered while installing your fuel injection system or after a time of operation are very simple. If your check engine light is on you more than likely have a hard fault meaning something is grounded out, unplugged, operating out of range or has gone bad. See

What kind of engine did the Camaro IROC Z have?

The IROC-Z returned for 1986 with few changes. The most notable change to the IROC-Z was the detuning of the 5.0-liter Tuned Port Injection engine. Due to a camshaft change and emissions regulations, the TPI engine lost a whopping 25 horsepower.

What kind of engine was in 1990 Camaro Z?

(The standard V8 in the IROC-Z was the 170-horsepower LOS 305ci V8-not enough power for the SCCA Showroom Stock competition.) The G92 package included the engine oil cooler, four-wheel disc brakes, dual converter exhausts, P245/50ZR16 Goodyear Eagle tires, a 145mph speedometer, and 5,500rpm tachometer.

Where is the idle air control valve on a Camaro?

I’m going to say check your IAC valve (idle air control), this is located on the passenger side underneath the throttle body. These get all carboned up and can’t re-seat themselves properly. You may have to perform a minimum idle setting also.

Where are the MAF sensors in a TPI?

Below is a list of all the needed sensors to install a MAF TPI setup, and each of their functions. Mass Air Flow (MAF) Sensor: This sensor is responsible for measuring air volume and density. It is located in the air duct, before the throttle body. All of the air that the engine consumes must first pass through the MAF sensor.

What kind of engine does an IROC Z have?

The IROC-Z was available with three engine choices. The base engine was the LG4 5.0-liter V8 with 155 horsepower and 245 lb.-ft- of torque.

What was the IROC wheel on a 1988 Camaro?

The standard IROC wheel was the old 15×7 inch aluminum 5 spoke Z28 wheel and this wheel was also now standard on the Chevrolet Camaro Sport Coupe. In 1988 only, this wheel rather than having only the recessed areas painted gold or silver, was completely painted gold or silver (for that `double-dunked’ in paint look).

What kind of engine did Chevy Camaro have in 1988?

Long-lived LG4 carbureted 305 replaced by the new LO3 throttle body injection 305. All Camaro TPI motors bumped up 5 hp due to slightly higher lift/longer duration cam profiles, additional valve seat angle, exhaust port/exhaust manifold changes.G92 (performance axle ratio) still available on IROC-Z convertible in 1988.

What was the G92 code on a 1987 Chevy Camaro?

G92 code was now available on the 350 (B2L) IROC-Z and now had to be specified to get 3.27 rear end (was standard in 1987) as a 2.77 rear was now standard on the 5.7 TPI. J65 rear disc brakes, G80 limited slip differential, and KC4 engine oil cooler were still required on all 5.7 and G92 cars.

When did the Chevy Camaro IROC Z come out?

The IROC-Z is one of the few that was solely produced during a single generation. The 1985 – 1990 Camaro IROC-Z is also one that will always have a special place in the hearts of those that grew up in the 1980s. It was the Camaro that took us on first dates, graduations, and many road trips we’ll never forget.

Which is faster a Camaro IROC Z or a Mustang?

Oh, in case you’re wondering, the IROC-Z was .08 seconds faster than the Mustang from 0 to 60 and .51 seconds faster in the quarter mile. It seems the Mustang’s dominance over the Camaro had come to an end. At least for now, that was the case. The IROC-Z returned for 1986 with few changes.

What was the problem with my 1988 IROC Z 350?